A catalogue of Utah minerals and localities; with descriptive list, and notes for collectors

TN 2.4-'

Bixby

j| atalogue of Utah minerals and localities

THE LIBRARY

OF

THE UNIVERSITY
OF CALIFORNIA

LOS ANGELES

The RALPH D. REED LIBRARY

1>KI'ARTMIOT OF tJKOI.OGY

UNIVERSITY OF CALIFORNIA.
I .OS A.NOKI.KS, CALIF.

ATALOGUE
F

JTAH MINERALS

and LOCALITIES

!th Descriptive List
id Notes for Collectors

MAYNARD BIXBY

A CATALOGUE OF

UTAH
MINERALS AND LOCALITIES

With Descriptive List,
And Notes for Collectors.

-by-

MAYNARD BIXBY.

Salt Lake City, Utah.

1904.

Copyright, 1902,

by

MAYNARD BIXBY.
(Third Ed.)

COMPLIMENTS OF

R. H. OFFICER & CO.,

ASSAYERS AND CHEMISTS,

SALT LAKE CITY, UTAH.

WRITE FOR PRICES.

YOU WANT A GOOD MINE!

MANY YEARS EXPERIENCE

IN MINl^S AND MINERALS.

WRITE TO ME

MAYNARD BIXBY.

SALT LAKE CITY, UTAH.

MINERAL LOCALITIES.

BEAVER COUNTY.

(Vy Beaver City, near; hyalite, banded in brownish and
white to nearly colorless.

Beaver Lake District; azurite. 0. K. Mine; bornite,
chalcocite, chalcopyrite, covellite, copper, limonite, mal-
achite, molybdite, pyrite.

Bradshaw District; aragonite, aurichalcite, cerussite,
cuprite, malachite.

Cactus Gulch; chalcopyrite, garnet, limonite, quartz,
crystals enclosing tourmaline.

English Springs; Iron ores.

Frisco; angelsite, argentite,barite, brdchantite, cerar-
gyrite, cerussite, dufrenoysite, galena, garnet, pyrargy-
rite, proustite, selenite, sphalerite, often phosphorescent,
zincite, wollastonite.

Granite District; almandine garnet, barite, bismuth -
inite.

Indian Creek; gold.

Mooney Springs; topaz.

Rock Corral; 9 miles east of Milford.ortuoclase crys-
tals, smoky quartz crystals, prase.

Rocky District; Adelia Mine, wulfenite.

Star District; azurite, bismuthinite, galena, cerargyr-
itc. (••erii>site, malachite.

Burning Moscow Mine; goslarite.

Sulphurvale; sulphur.
Elsewhere; bismite, bismutite.

BOX ELDER COUNTY.

Copper Mountain Mine; azurite, cuprite, malachite.

Dove Creek; gold, garnet.

Lucin District; cerussite, galena, Empire Mine, wul-
fenite in aggregate of thin yellow plates and crystals.

North Shore of Salt Lake; asphaltum as an exuda-
tion, petroleum in shale.

Park Valley Mines; galena, gold, pyrite; monazite (?)
at Century Mine.

Sierra Madre District; bornite, cerussite. chalcopyrite,
galena, gold, malachite, molybdenite, rose quartz.

New Foundland District; cerussite, galena, copper min-
erals.

Vipont Mine; wire silver and gold, ruby silver, pyrite.

Elsewhere; Utah onvx (aragonite. or travertine.).

/"^' M f\^^mf^\r^i

Utah Minerals and Localities.

CACHE COUNTY.

Blacksmith Fork; cernssite, galena.

La Plata; a/.unte. eerussite, galena, malachite.

Logan; near, cuprite, variety chalcotrichite.

Richmond; near, galena.

Southeastern part of County; iron ores.

CARBON COUNTY.

Castle Gate; coal, native coke.
Eastern part of County; iron ores.
Pleasant Valley, Sunnyside; coal.

Whitmore Canon; ozocerite in sandstone, asphaltuni
and other hydrocarbons.

Winter Quarters Mine; eoal, co pa lite on coal.

DAVIS COUNTY.

Antelope Island; copper minerals, cpidnte, garnet, mi-
caceous hematite.

Farmington, in hills east of; a/airite. bornite. gold,
malachite.

Lake Shore in winter; mirabilite.

EMERY COUNTY.

Castle Valley; agates, azurite. and malachite in sand-
stone, chalcedony, ppsomite (?), silicih'ed trunks of trees
containing pockets of kose quartz crystals.

Copper Globe Mine; copper minerals.

San Rafael River; red alabaster.

San Rafael Swell, S E of Emery; carnotite, gummite,
tiruninitc.

Summerville District; copper minerals, cerus-ite. gu
Icna.

GARFIELD COUNTY.

Cannonville; wheelerite.

Coyoto, near; (.rpiruent. realgar, stibnite.

Between Junction and Coyoto; copper minerals.

Henry Mts; bornite. ehalcopyrite. coal, gold, octa-
hedral pyrite.

Moss Agate Hill near Panguitch; moss agates.

GRAND COUNTY.

Cisco, near: agates, fine red jasper casts of fossil shells
chalcedony, travertine.

Richardson, near: carnotite. copper minerals, galena.
Salt Wash; copper minerals.
Thompsons, near: selenite crystals.

IRON COUNTY.

Cedar City, west of; magnetite crystal-, ncca-ionally

Utah Minerals and Localities.

with apatite crystals, lodestone. In hills east of Cedar
City; coal, seknite.

Coyote District; orpiment, realgar in strata under
lava. stibnite.

State Line; argentite, gold, pyrite, silver sulphides.

Southeastern part of Co.; coal.

JUAB COUNTY.

Bavarian Con. Mine, 3 miles S E of Eureka; seam of
coal in porphyritic formation.

Diamond District; cerussite. galena, quartz crystals
.in losing liquids at Miller Mine.

Fish Springs; angelsite (?) cerargyrite, cerussite,
galena.

Tintic District; Boss Tweed Mine; azurite, cuprite,
malachite, bismite.

Carissa Mine; aurichalcite, azurite. barite, bismutite,
brochantite, calcite, chrysocolla, conichalcite, cuprite,
.copper, onargito. lettsomite, malachite, mixite, olivenite,
pittiscite, sccrodite. utahite. and near by, greenish gar-
net in limestone.

Emerald Mine; native bismuth crystals.

Mines of Eureka; aragonite, argentite. anglesite, azur-
ite, luirite. brochantite, calcite. calamine. cerargyrite
crystals, cerussite crystals,cbrysocola. clinoclasite crys-
tals, conichalcite, euprit?. enargite. erimte, gold, galena.
jarcsite crystals, leadhillite crystals, limonite. Hnarite
crystals, malachite, melaconite. mixite, mimetite, red,
white and green oliventite, variety of oliventite contain-
ing /.inc. pearceite crystals, pyrite, pharmacosiderite, .
Hi-art/ f-ry-'tal^. snlnhur crystals occasionally included
in aivjclesite crystals, silicious stalactites, silver, selen-
ite, tyrolite crystals, utahite crystals, zeunerite crystals.
l'-cud inorphs of dolomite and oliventite after calcite.
ami many other posudomorphs. Hodiva Mine: minium,
selenite.

Homestake and Shoebridge Mines; enargite crystals.

Humbup; Mine: anglesite. cerussite. galena, stephanite.

Iron Mine; bi«muth minerals, cerargyrite. hematite,
limonite.

Levan, near; variegated alabaster of brownish and
yellowish tints.

Mines cf Mammoth; ararentite. aragonite, azurite,
lun-ite. borickite ('!). brcchantite, calcite, cerussite,
chenevi^ite, cerarpyrite, clinoclasite, cuprite, conichal-
cite, enargite, erinite, galena, gold, jarosite, lettsomite,
malachite, melaconito. mixite, oliventite, pyrite. phar-
macosiderite.selenite, sccrodite, tyrolite, utahite. pseu-
domorphs of limonite. malachite, and quartz after cal-
cite. also a great variety of other pseudomorphs. stal-
actitic hematite, and masses of curled plates of hematite.

Nephi; gypsum, halite.

Utah Minerals and Localities.

Sioux Mine; azunte. galena, malachite, quartz and
dolomite ciystals.

Sunbeam Mine; octahedral pyrite.

Swansea Mine; anglesite, cerussite, galena, pyrite,
silver, sphalerite.

Victor Mine; blue calamine.

Elsewhere in Tintic Dist.; bornite, bismutite. chalco'-
pynte, chaleocite, aluminous chrysocolla.

'Thomas Mts, 9 miles northerly from Drum Springs;
chalcedony, carnelian, garnet, variety almandine, hyalite,
transparent colorless topaz crystals loose in soil and in
rhyolite. sherry tinted topaz crystals in rhyolite with
bluish quartz crystals, sanadin, and hematite crystals.
and occasionally including these minerals, topaz grayish
and opaque from inclusions of quartz crystals.

West Tintic District; cerussite, galena, molybdenite,
pyrite.

KANE COUNTY.

Alum Hills; alum minerals.

Johnson and Kanab Creeks; coal, gypsum.

Kimball Valley; gypsum.

Paria, near; alum minerals, coal, gypsum.

Paria Mining Co; a/urite. cuprite, malachite.

MILLARD COUNTY.

Antelope Springs, near; pyrite cubes, altered to limon-
ite. in slate.

Black Rock, near; red and black mottled, and spheru-
litic obsidian.

Cove Creek Sulphur Mines; sulphur crystals, pseudo-
morphs of sulphur atter twigs, leaves, cones, etc.

Detroit District; azurite. bismutite. cuprite, chalced-
ony, hematite crystals three miles north, jasper, mal-
achite, pyrite altered to limonite, pyrolusite.

Kanosh, near: gypsum in large bed, manganese min-
erals.

Sawtooth; garnet, copper and lead minerals, molyb-
denite.

Twin Peaks; white apatite, augite, and martite crystals
loose in soil, and in place in eruptive rocks.

Elsewhere in CounLy; galena. Utah onyx.

MORGAN COUNTY.

Carbonate Hill Mine, near Peterson; cerussite.
Copper Mountain Mine; copper minerals.

PIUTE COUNTY.

Belknap, near: pyrolusite.

Bully Boy and Webster Mines; large ''sceptre" quartz
crystals, \\ultenite.

Utah Minerals and Localities.

Dalton Mine; gold, rhodochrosite. tellurium minerals.

Deer Creek; alum minerals, copper minerals, white
barite crystals, selenite.

East of Marysvale in foot hills; amethystine quartz,
selenite.

Green Eyed Monster Mine; large pyrite crystals al-
tered to limonite.

Ohio; cerussite, chalcocite, chalcopyrite. galena, mala-
chite, tetrahedrite.

Mt Baldy; anglesite, argentite at Pluto Mine, cerus-
site. cerargyrite with gold, galena, wulfenite, tellurium
minerals.

Sevier Canon, near Deer Creek; satin spar.

Six miles south of Marysvale at quicksilver mine;
onofrite, tiemannite crystals.

Elsewhere in County; galena, garnet, gold, blue hyalite.

RICH COUNTY.

Western part; iron minerals.

SALT LAKE COUNTY.

Alum Point; bushmanite.

Big Cottonwood; anglesite, aurichalcite at Carbonate
and Keeler mines; cerussite, galena, malachite, pyrolus-
ite. wulfenite at Woodlawn mine; molybdenite, cuprite
at Copper King Mine.

Bingham; Queen Mine, argenite, barite; Tiewaukee
Mine, binnite: \Vinnamuck Mine, dufrenoysite. pyrargyr-
ite. rhcdochrosite; tetrahedrite at Kighty Xine Mine;
line crystals of enargite at Commercial Mine.

Bingham Canon; wood replaced by copper and mala-
chite, native copper.

Butterfield Canon; realgar, orpiment. luckite and mal-
lardite at Lucky Boy Mine; rhodochrosite.

Carrs Fork and Bingham Canon; native cojjper, placer
gold.

Draper, near: kaolinitf.

Highland Boy Mine; chalcopyrite. cuprite, pyrite.

Little Cottonwood; dufrenoysite rarely; caledonite
crystals; chalcopyrite at Oxford and Geneva Mines;
linarite at Grizzly and other mines; wulfenite in deli-
cate yellow crystals at City Rock Mine. At Little
Emma Mine; anglesite. calamine. chrysocolla, cerussite.
cervantite. galena, malachite, pyrite. pyrolusite, sphaler-
it?. stephanite. wulfenite.

New State Mine, near mouth of Big Cottonwood Can-
on; gold.

Old Jordan and Galena Mines; cerussite. chalcopyrite,
enargite crystals, galena, goslarite, milky opal, pisanite.
(?) pyrite, sphalerite, ''sceptre" quartz crystals, tetra-
hedrite crystals with wire silver.

Parley's Canon; greenish granular corundum.

Salt Lake Shore; mirabilite in winter.

Utah Minerals and Localities.

SAN JUAN COUNTY.

Golden Queen and other mines; gold.

Halletts Creek and in S W part of County; coal.

La Sal Mts; copper minerals, mangan.te crystals
showing fine red translucency, molybdenite.
- Near San Juan River below Bluff City; chalcopyrite,
copper, malachite, silver.

Elsewhere; garnet, variety pyrope, amethyst, olivine,
placer gold.

SAN PETE COUNTY.

Gunnison; halite in fine cubes.
Elsewhere; coal, gypsum, iron minerals.

SEVIER COUNTY.

Fish Lake; common opal.

Foot hills north of Glenwood; chalcedony geodes. sel-
enite.

Salina Canon; coal with yellow hydrocarbon, copalite,
(?) galena in sandstone.

Elsewhere; fullers earth, orpiment in clay, opalized
wood.

SUMMIT COUNTY.

Bonanza Flat; green garnet (grossularite) in crystals
and massive.

Coalville; coal.

Daly Judge Mine; large crystals of galena, flnorite.

Daly West Mine; quart/, crystals with sphalerite
crystals.

Other Park City Mines; anglesit?. azurite. cerussite,
cerargyrite, galena, malachite, sphalerite occasionally
phosphorescent, pyrite. tetrahedrite.

Silver King Mine; azurite. cerussite, galena, malachite.

Uintah; anglesite. argentite. cerargyrite. tetrahedrite.
malachite.

TOELLE COUNTY.

Brickyard Mine at Mercur; melanterite, orpiment
crystals (and foliaceous). realgar crystals, sulphur.

Clifton District; Gold Hill mines; azurite. bornite. goU
in calcite, garnet, malachite. Holstein group; copper
minerals. Albany (ilrnup; azurite. ehalcopyrite. chrysn-
colla. galena, malachite. Pole Star Croup; azurite. con-
ichalcite, cuprite, malachite, olivenite. tetrahedrite. py-
rito. Cyclone Group; wulfenite. Troy Group; tel-
lurium minerals.

Deep Creek Region; agates, cerussite. chalcedony, ga-
lena.

Dry Canon; at Kearsarge Mine; hessite. At Mono Mine;
azurite. cerargyrite. galena, malachite, coppper. silver,
stephanitc.

Utah Mineials and Localities.

Dutch Mountain; augite, azurite, cerussite, fluorite,
galena, malachite.

Dugway; barite with pink and white 'fluorite, and
pepper, cerussite, cerargyrite. cuprite, flnorite of varie-
gated color and enclosing galena, magnetite, silver, wul-
fenite rarely in pyramidal crystals.'

Dugway Range, about fifteen miles south of Dugway;
bixbyite on topaz and rhyolite. chalcedony geodes. garnet
crystals on topaz and rhyolite. altered to topaz, etc,
topaz crystals often opaque from inclusions of quartz
red apatite crystals on topaz crystals.

Geyser-Marion Mine, at Merc'ur; calcite. cerargyrite,
(Sparrow Hawk Claim), cinnabar, jarosite, stibnite,
varisclte.

Golden Gate Mine, Mercur; arsenopyrite. calcite, cinna-
bar, reaigar with orpiment.

Granite Mountain; galena, kaolimte.

Hillside Mine, Mercur; cinnabar, orpiment. sulphur.

Johnsons Pass; salona. Utah onyx of greenish- and
other shades.

Lion Hill, near Ophir; cerargyrite, cerussite, galena,
utahite rich in s,,ver.

Mercur Mine; calcite red from included realgar, cinna-
bar, orpiment crystals, realgar crystals, selenite, vans-
cite.

Midas Mine; gold with molybdenite (?).

Mineral Hill; cerussite, copper minerals, galena.

Ophir; auiichalcite. calcite. cerussite. cerargyrite. chal-
copyrite. fluorite with dolomite crystals, malachite, py-
rite, smithsonite crystals, tetrahedrite crystals with
white flurrite.

Overland Canon near Clifton; bismuthinite (?).

anite.

nnabar. orpiment, real-

Pine Canon near Tooele;

Sacramento Mine at Mercur,
gar. sulphur.

Stockton; cerussite. galena, p rite.
Sunshine; cinnabar, orpiment. s

Wild Cat Mountain; fluorite itli silver, prosopite.

Elsewhere; graphite.

UINTAH COUNTY.

Ashley, near: cannel coal, asphaltum. carnotite.
Asphalt Creek; asphaltum.
Bullionville District; copper minerals.
Fort DuChesne, near: gilsonite.
Ouray, near: gypsum.

Elsewhere and on Uncompahgre Reservation; gilsonite,
ozocerite, wurtzilite.

UTAH COUNTY.

American Fork Canon; cerussite. galena, molybdenite,
pyrite, tetradymite, tetrahedrite.

Clay Canon, near Fairfield variscite, wardite.

Utah Minerals and Localities.

Lakeside Mts.; chalcanthite. iceland spar, large pyrite
crystals altered to limonite and hematite. Utah Onyx.

Mill Fork {station; coal.

Soldier Summit, and near Pleasant Valley Junction;
ozocerite, and other hydrocarbons.

Springville, mar; Utah onyx, black fossil marble.

Thistle Junction, :i miles east: geodes em-losing li\ -
drocarboiis in a viscid state.

Elsewhere; coal, alabaster, tschermigitc.

WASATCH COUNTY.

Blue Ledge and Snake Creek; cerussitc. galena, pyro-
inorphite. spalerite.

Strawberry Creek; hydrocarbon compounds.

South East corner, near Smith's Well; gilsonitc.

Wasatch Range, west of Midway; green garnet (gr«;s-
.sularite), olive green zonal muscovite, showing asterNm,
phosphorescent limestone, copp; r minerals.

WASHINGTON COUNTY.

Beaver Dam Mts; realgar.

Dixie Mines; aurichalcite, a/.urite. copper, cuprite,
timonite. malachite.

Silver Reef; in sandstone, argentite. a/.urite. autunite,
cerargyrite, malachite, silver, fossil plants and trees re-
placed by argentite, coal, copper minerals, cerargyrito
and silica.

St. George, west of 20 miles; iron minerals, antimonial
minerals.

Virgin River, transparent halite. .

Washington, near; carnotite.

Elsewhere; gvpsum.

WAYNE COUNTY.

Fremont River; selenite crystals of very large siw,
occasionally ; nclosing liijuids.
Starvation Creek; coal.
Elsewhere; hematite, gold.

WEBER COUNTY.

Huntsville, ten miles east; pyrolusite.
Ogden Canon; hornlih nde. limonite, uraninitc.
Elsewhere; cerns-iic. galena.

The following minerals have been variously report-
ed, but need continuation; albandite, arsenic, arsenolite.
atacamite, barytocalcite. boulangerite. catseyc. chal-
cophanite. chiolite. cubanite. embolite, franklinite, fries-
lebenite. hausmannite, ilmenite, iron silicates, magnesite.
miargyrite. ]ihenacite. phosgenite, polybasite. pyrochro-
ite. ruby, sapphire, spinel, strontianite. witherite.

Utah Minerals and Localities.

Notes for Collectors of Minerals.

Tintic District. — This district is noted for its fine
specimens of the rare copper arsenates, as well as for
its .meat variety of mineral species. Pearceite in cry-
-tals has hc'tn one of the rarest noted, and the speci-
iiu n- seen liave been most remarkable in size, the larg-
r>t being a half an inch or more across. The crystals
arc i,t' tabular habit, 'coated with a bluish substance,
and wer, associated with small brilliant crystals of en-
argite ami anglesite. The crystals also show the pe-
culiar triangular markings noted by Prof. S. L. Penfield
in. describing pearceite from Montana. Less tlian a half
do/.en specimens of tliis mineral have been preserved.
Xeiinerite also occiii's with exceeding rarity, the crystals
varying in coliii- from \ello\visli to a deep olive, almost
emerald green. I'hry are of thin tabular habit, the larg-
esl being less than one fourth of an inch across. Olive-
nite has been abundant at times, but the red tinted
specimens have IK en quite rare. The red crystals are
usually very minute, and range in color from a light
reddish brown to a deep blood red. They afford beauti-
ful mounts for the microscope, and are usually found
densely lining small cavities in a hard silicious ore, oc-
casionally with rnargite, also with anglesite, and in-
cluded in the latter mineral. White olivenite occurs
sparingly in very delicate felted bunches of capillary
cry-taK Seorodite occurs in crystals of fine quality,
the largest nearlv one fourth of an inch in size, of a,
blui-h green color, also of brown tints. Leadhillite has
been observed rarely, but the crystals seen were of
good quality, nearly colorless, and averaged possibly
mi. re than a half an inch across. Anglesite occurs in a
gnat variety of form, and its crystalography would be
veil worth careful investigation. Many tine translucent
and transparent crystals have been collected, ranging in
color from colorless and white, to dark grayish, and a fine
vellow. Crystals measuring about two inches in length
have been preserved and larger specimens have been re-
ported. Cerussite has been seen rarely in beautiful nearly
transparent twin crystals. .Cuprite is rarely seen crystal-
i/.;d. A small quantity of mimetite was found, occurring
in very delicate white, grayish and yellow, long slender
hexagonal crystals. Brilliant small crystals of pnargite
have been observed at the mines of Eureka, also in large
crystals of dull lustre at the Homestake Mine, near
Silver City, a'nd of smaller size at the mines of Mam-
moth. Very fine crystali/.ations of this mineral have
been obtained at the Commercial Mine. Bingham. Mix-
ite has been collected at various mines of th.e Tintic
District, but of finest quality at the Carissa Mine, where
it t'requentlv occurs hi minute aoicular crystals forming
'beautiful pale green velvety surt'acrs, largely in a barite

Utah Minerals and Localities.

gangue. Notable crystals of brochantite were found at
the Eureka Hill Mine, the largest a half inch or more
in length, and of the wedge habit. No other locality
has furnished such crystals of this mineral. A very few
remarkable crystals of linarite have been seen. A few
specimens of Utahite in good sized crystals have been
collected. Pseudomorphs in great variety occur in the
Tintic mines.

Topaz Localities'.

The Thomas Mountain localities are situated in Juab
County, about nine miles in a northerly direction from
Drum Springs, in the Detroit District, or about 55
miles in a northwesterly direction from Desert. The
topaz crystals occur in cavities and seams of a light
gray rhyolite, a great belt of which has been pushed
up for 20 miles or more in both northerly and southerly
directions from Thomas Mountains. The loose colorles
crystals are found on the hillsides, and in the sands of
the dry gulches, where they glitter in countless num-
bers. The sherry colored crystals are obtained by blast-
ing the richer spots in the rhyolite, where the crystals
are found attached to the sides of the cavities, and
frequently loose in them, with a soft kaolin-like ma-
terial. These colored crystals bleach very rapidly on ex-
posure to the light, and particularly when exposed to
the direct rays of the sun, losing nearly all color in a
day. The writer has been unable to find any explana-
tion of this fact. The largest topaz crystals have been
found at the bixbyite locality in the Dugway Range,
about 15 miles from Thomas Mountains, and ssvcra!
miles southerly from the Dugway grade. Opaque crys-
tals of much larger size than any of the transparent
kinds, filled with quartz, and occasionally with black
cubes of bixbyite attached, have been found here spar-
ingly. The curious groups of opaque gray topaz from
Thomas Mountains are of exceedingly rare occurrence,
in perfection, though many imperfect specimens are
seen. The more imperfect crystals of the gray topaz
appear as if eroded by some solvent. These topaz lo-
calities are exceedingly interesting to the mineralogist,
and good specimens are obtainable at any time.

Tiemannite and Onofrite.

The locality near Marysvale lias produced tlir only
crystals of tiemannite known, and many fine specimen*
have been obtained, the largest probably hue fourth
of an inch across. They are generally of th? tetrahedral
habit and highly modified. No crystals of onofrite have
been reported. These minerals occur in a limestone
gangue. the crystals appearing in open trains. Crystal-
ized specimens are reported unobtainable now.

Utah Minerals and Localities.

Orpiment and Realgar.

Probably the finest and largest known crystals of
these minerals have been found in the gold mines of
Mercur, mainly in the Mercur, Golden Gate and Brick-
yard mines. Crystals of great perfection and an inch
or more in length, have been collected from these mines.
The discovery of perfect crystals of orpiment including
many of twinned habit, enabled the classification of this
mineral in its proper system of crystalization, viz.: in
the monoclinic system, the crystals hitherto found being
so imperfect that it was placed in the orthorhombic
system. Groups of orpiment crystals occur with realgar
crystals rarely among them. Beautiful crystals of real-
gar occur with crystals of calcite, and often penetrating
the latter.

Variscite.

Variseite in large nodules associated with bluish ward-
ite, has been one of the notable finds in Clay Canon,
near Fairfield. Large specimens of fine green color,
eight inches or more across, have been mined, which,
sawed into sections and polished, made showy speci-
mens for the collection.

Martite.

The largest crystals of this form of hematite known
have been collected it Twin Peaks, Millard County.
Octahedral crystals, showing but one termination, and
five inches or more across, have been collected. Groups
of martite crystals are also sparingly seen, associated
with crystals of augite and apatite. These specimens
were collected in the soil, and consequently somewhat
bruised, but smaller crystals are found in place in the
eruptive rock of the mountains.

Rare Minerals.

Among the rare minerals, bixbyite, luckite, mallardite,
wnrdite and utahite have not been reported outside of
Utah. A mineral, however, giving the reactions and
having the appearance of utahite, has been found near
Moreiici. Arizona. Zeunerite is exceedingly rare at the
mines of Tintic. but a half dozen or so having been pre-
served. It is possible that a small percentage of uranium
vims through some of the Tintic ores. About two dozen
specimens of lettsomite have been found, while chalco-
phyllite has been reported in but one or two specimens.
Carnotite occurs in sandstone, near Richardson, also S
E of Emery, Emery Co., and in other localities. Uranin-
ite occurs in very small quantity at the localities. Du-
frenoysite and binnite are probably unobtainable at
present. The best specimens of covellite have been ob-

Utah Minerals and Localities.

taincd at the ( ). K. Mine, but the mineral 5- rather fri-
al>le. Copper ar-cnates. similar to those of Tintic. liave
l;cen found at mines near Clifton, and with develop-
ment of the prospects there interesting linds may \»-
mad'i . Tlie less rare molybdenite, which seems to be
cMiiing into commercial use. has been found in several
localities, but no crystals have been reported. Utah
has been and \vi!l continue to be an interesting fu-ld fur
the mineralogist, and it is to be regretted that no in-
>titution e\i<ts. as in some neighboring State-, to which
the mines would 1« obliged to furnish good specimens
of the various minerals discovered, for preservation in
the intere-ts of science.

— 0 —

DESCRIPTIVE LIST OF MINERALS.

Abbreviations Jsed in the Following List:

II. hardness; (J. »ravitv; S. streak: Comp.. compo-i-
lion.

Figur.s given for composition of minerals represent
percentages, and are taken from the best authorities.
They give the analy>c- for pure minerals, and specific
analyses <,f I tali species. \vlure obtainable.

AGATE. Variegated chalcedony.

ALABASTER. Massive granular gypsum.

ALMANDINE. Iron-aluminium garnet.

AMETHYST. Quart/, colored by niangaiu-e.

AMPHIBOLE. II :,'iblende. Bisilicate of protoxide
bases.

ANDRADITE. Calcium-iron garnet.

ANGLESITE. Sulphate of lead. II.. 2.7.1-3: <:..
(i.l2--(i..'I!l; crlor. white, vellow grayish, greenish, hlui-h.
Comp.. ^iilphur trioxide, 26.4; lead' oxide. 73.(i.

APATITE. Phosphate of calcium. .. II., 4.5-5; G.,
3.17-3.23: coir, sea green, viol; i blue. gray. ll< sh red.
bluish green, white, yellow, brown, Cnmp.. approxi-
mately ]iln '~|iliorHs penfcxide. 41.0: Mine. .13.04: fluorine.
3.30. with thaeis of iron and alumina.

ARAGONITE. Carbonate of calcium. II.. 3..1--4: G.,
2. 03- -2.9.1; color, while, gray, velli.w. ureen. violet.
Comp.. carbon dioxide. 44: lime. .1(5.

ARGENTITE. Silver sulphide. II.. 2--2..V. G., 7.20--
7.3(5; col;:r and S.. blackish lead gray, -treak -Inning.
O mi'., sulphur. 12.0: -ilver. S7.1.

AR3ENOPYRITE. Sulph-arsei-ide of ir.;ii. ELr5-5.6;
(.'.. .1.9--0..1; color, silver white to -t'-el gray: S.. grayi-b
black. Comp.. sulphur. 10.7: arsenic. 46; iron, 34.3.

ASPHALTUM. Mineral pitch: a mixture .,f hydro-
carbons.

Utah Minerals and Localities. 15

AUGITE. Aluminous variety of pyroxene. H., about
li; (i., about 3.30; color, green, yellow, black. Utah
mineral black. Comp., approximately silica. 47; alum-
ina, 10; magnesia, 1(5; lime, 19; iron Oxides. 8.

AURICHALCITE. Hydrous carbonate of copper and
/inc. H., 2; G.. 3.64—3.64; color, pale green, verdigris
green, to sky blue. S.. pale greenish or bluish. Comp.,
carbon dioxide. 10.1; zinc oxide. 53.2: cupric oxide. 20.8;
water. 9.9.

AUTUNITE. Hydrous phosphate of uranium and cal-
cium. II.. 2--2.5; G., 3.5--3.1J); color, lemon yellow to
sulphur yellow. S., yellowish. Comp., phosphorus pent-
oxide. 15.5; uranium trioxide. 02.7; lime, 0.1; water. 15.7.

AZURITE. Hydrous carbonate of copper. H.. 3.5--4;
<;., 3.77--3.83; color, azure blue. Comp.. carbon dioxide.
25.0; cupric oxide. 09.2; water, 5.2.

BARITE. Sulphate of barium. H., 2.5--3: (',.. 4.3--
4.0; color, white, yellow, gray, blue red. brown; S.,
white. Com])., sulphur trioxide. 34.3; baryta. 05.7.

BISMITE. Bismuth trioxide. G.. 4.30; color, green-
ish, yellow, straw yellow, grayish white. Comp.. oxy-
gen, 10.4; bismuth, "89.0.

BISMUTHINITE. Bismuth sulphide. H.. 2; G.. 0.4--
0.5; S. and color. Lead gray to tin white. Comp., sul-
phur. 18; bismuth. 81.2.

BISMUTITE. Basic bismuth carbonate. H.. 4--4.»;
G., G.80--0.90; color, white, mountain green, siskin green,
straw yellow', yellowish gray; S., greenish gray to color-
less. Comp., carbon dioxide. 0.50; bismuth trioxide. 90;
water. 3.44.

BINNITE. Sulph-arsenide -of copper. H.. 2.5--3; (!.,
4.47; color, steel gray to iron black, som: times brown-
ish; S., reddish brown. Comp.. sulphur, 29.8; arsenic,
31 : copper. 39.2.

BIXBYITE. Oxide of iron and manganese. H.. 0--G.5;
<;.. 4.94; color, brilliant black. Comp.. iron pent oxide.
47.98; manganese oxide. 42.05; cxygen. 4.38; alumina.
2.53. with small quantities of silica and titanium.

BORICKITE. Hydrous phosphate of iron and cal-
cium. H.. 3.5; (i., '2.0--2.7; S. and color, reddish brown.
Com])., phosphorus pentoxide. 20.49; iron trioxide, 52.29;
lime. 8.0; water, 19.00. ,

BORNITE. Sulphide of copper and iron. H.. 3; G.,
4.9--5.4; color, between copper red and pinchbeck brown;
S.. pale grayish black. Com])., sulphur. 28.1 ; c:ipper.
55.5; iron'. 10.4.

BROCHANTITE. Hydrous sulphate of copper. II.,
3.5--; G., 3.9; color, emerald green to blackish green:
S.. green, paler than color. Comp.. Utah mineral, eupric
oxide. 08.7: water. 12.44: sulphur trioxide. undeter-
mined.

BUSHMANITE. Hydrous sulphate of aluminium,
manganese and magnesium. H., 1.5; G., 1.78; color.

16 Utah Minerals and Localities.

white with tints of rose, green and yellow. Goinp.,
I'tali mineral, sulphur trioxide, 35.85; alumina, 10.40;
nangane.se oxide, 2.12; oxide of magnesium, 5.94; water.
40 with traces of iron and potassium.

CALCITE. Calcium carbonate. H., 3; G., 2.71; color,
white and various pale shades of gray, red, green, blue,
yellow, violet, also brown and black when impure,
(imp., carbon dioxide, 44; lime, 56.

CALEDONITE. Sulphate of lead and copper. 11..
2.5-3; G., 6.4; color, deep verdigris-green or' bluish-green.
S., greenish white. Comp.. sulphur trioxide, 17.!>: lead
protoxide. 06.3; .-upric oxide, 11.8; water, 4.0.

CANNEL COAL. Variety of bituminous coal; dull
black or grayish black, and on distillation affording 40
to 00 per cent, volatile matter', including a large pn.-
portion of oil.

CARNOTITE. A hydous compound of uranium, po-
tassium and vanadium. A yellowish crystalline powder
occurring mixed with quartzose sand. Color, yellow.
Comp., vanadium pentoxide, 20.12; uranium trioxide.
(54.70; potassium oxide, 10.37; water, 5.1!); approximate-
ly, with trace of iron.

CARNELIAN. Red chalcedony.

CALAMINE. Hydrous silicate of zinc. H.. 4.5--5; 0..
3.40--3\,50; color, white, greenish, bluish, yellow to
brown; S.. white. Comp., silica. 25; zinc oxide. (i7.r>;
water, 7.5.

CERARGYRITE. Chloride of silver. II., 1--1.5: G..
5.55: cohir. pearl gray, grayish green, whitish to color-
less, rarely violet blue. Comp. .chlorine, 24.7; silver.
75.3.

CERVANTITE. Binoxide of antimony. 11.. 4.5: G.,
4.08; color, sulphur yellow. Isabella yellow to nearly
whit? or reddish white; S.. yellow to white. Comp.
oxygen. 21.1; antimony. 78.!).

CERUSSITE. Carbonate of lead. II.. 3--3.5: <;.. 0.40
--6.57; color, white, gray grayish black, sometimes blue
or green from copper. Com])., carbon dioxide. 16.5; lead
oxide. 83.5.

CHALCOCITE. Cupreous sulphide. H.. 2.5-
5.8; color and S.. blackish lead gray. Comp
^0.2; copper. 70.8.

CHALCOPYRITE. Sulphide of copper and iron. II..
3.5--4; G...4.1--4.3; color, brass yellow, of t: n tarnished
or irridescent; S.. greenish black. Comp.. sulphur. 35;
copper. 34.4; iron, 30.5.

CHALCOPHYLLITE. Basic arsenate of copper. II..
2; G.. 2.4--2.(i; color, emerald green or grass green to
verdigris green: S.. paler than color. Com])., approxi-
mately arsenic pentoxide. 18; cupric oxide. 50; water. 32.

CHENEVIXITE. Arsenate of copper and iron. II..
3.5--4; G.. 3.93; color, mountain green, bluish green to
greenish yellow: S.. yellowish green. Comp., arsenic

Utah Minerals and Localities.

pentoxide, 38.2; cupric oxide, 26.3; iron sesquioxide, 26.5;
wati-r. 9.

CHRYSOCOLLA. Hydrous silicate of copper. H., 2-
4; G., 2-2.38; color, mountain green, bluish green, pass-
ing into sky blue and turquoise blue, brown to black
when impure. S., when pure, white. Comp., silica, 34.3;
copper oxide. 45.2; water. 20.5.

CHALCOTRICHITE. Capillary cuprite.

CHALCEDONY. Cryptocrystaline quartz. H., 7; G.,
2.6--2.l>4; color, white, gravish, pale to dark brown,
bluish.

CHALCANTHITE. Hydrous sulphate of copper. H.,
2.5; G., 2.12- -2.30; color* berlin blue to sky blue, some-
times green; S., uncolored. Comp.. sulphur trioxide,
32.1; cupric oxide, 31.8; water, 36.1.

CINNABAR. Sulphide of mercury. H., 2-2.5; G.,
8-8.2; color, cochineal red, inclined to brownish red and
lead gray; S., scarlet. Comp., sulphur, 13.8; mercury,
86.2.

CLINOCLASITE. Hydrous arsenate of copper. H.,
2.5-3; G., of Utah mineral, 4.36-4.38; color, blackish
blue green, internally dark verdigris green; S., bluish
green. Comp.. arsenic pentoxide. 29.59; cupric oxide,
(12.44; water. 7.72. with traces of zinc, iron, •etc.

CONICHALCITE. Hydrous arsenate of copper and
calcium. H., 4.5; G., 4.12; color, pistachio green, inclined
to emerald green; S., same as color. Comp., Utah min-
eral, arsenic pentoxide, 39.94; cupric oxide, 28.68; lime
19.79: \\atfr. 5.52; zinc oxide, 2.86, with traces of silver,
iron. etc.

COPALITE. An oxygenated hydrocarbon. G., 1.01--
1.05; color, pale clear yellow to dirty gray and dirty
brown. Conrp., approximately, carbon, 85.7; hydrogen,
11.47; oxygen. 2.84.

COPPER. Metallic or native copper.

COVELLITE. Cupric sulphide. H.. 1.5--2; G., 4.5-4.6;
color, indigo blue or darker; S.. lead gray- to black,
shining. Comp.. sulphur. 33.6; copper. 06.4.

CORUNDUM. Oxide of aluminium. H., 9; G., 3:95--
4.10; color, blue, red, yellow, brown, gray, to smoky
white and colorless. Comp., oxygen, 47.1 ; aluminium,
52.0.

CUPRITE. Cupreous oxide. H., 3.5-4; G.. 5.85-6.15;
color, red of various shades, particularly cochineal red,
sometimes almost black, occasionally crimson red by
transmitted liirht; S., several shades of brownish red.
shining. Comp.. oxygen, 11.2; copper, 88.8.

DOLOlVuTE. Carbonate of calcium and magnesium.
H.. 3.5-4: G.. 2.8-2.9; color, white, reddish or greenish
white, rose red. green, brown, gray and black. Comp..
carbon dioxide. 47.8: lime. 30.4; magnesia, 21.7.

DUFRENOYSITE. Sulph-arsenate of lead. H., 3;

i8 Utah Minerals and Localities.

G., 5.55- -5.57; color, blackish lead gray; S., reddish
brown. Comp., sulphur. 22.2; arsenic, 20.7; lead, 57.1.

ENARGITE. Sulph -arsenide of copper. H., 3; G.,
4.43--4.4S; color, grayish black to iron black; S., grayish
black. Comp., sulphur, 32.6; arsenic, 19.1; copper, 48.3.

EPODITE. Silicate of iron, alumina and calcium.
H.. 6--7; G., 3.2S--3.6; color, pistachio green, yellowish
green to brownish green, greenish black, black, clear
red and yellow, gray, white, colorless rarely. Comp.,
approximately, silica, 39; alumina, 25; iron oxide, 25;
lime, 24; water. 2.

EPSOMITE. Hydrous magnesium sulphate. H.. 2.5;
G., 1.75; color and S.. white. Comp., sulphur trioxide,
32.5; magnesium. 16.3; water, 51.2.

ERINITE. Hydrous arsenate of copper. H.. 4:5--5;
G., 4.04; color, emerald green, inclining to grass green;
S., green, paler than color. Comp., Utah mineral, ar-
senic pentoxide, 32.07; cupric oxide. 5(5.56; water. 6.8(5.
with small quantities of iron, calcium, etc.

FLUORITE. Fluoride of calcium. H.. 4; G.. 3.1S:
color, white, yellow, green, rose, and crimson red, violet
and sky blue, brown, wine yellow, greenish blue, violet
blue common, rarely red; S.. white. Comp.. fluorine.
48.9; calcium, 51.1.

GALENA. Sulphide of lead. H.. 2.5- -2.75; G.. 7.4- -7.6;
color and S., lead gray. Comp.. sulphur. 13.84; lead, 86.6.

GILSONITE. Hydrocarbon compound. H.. 2--2.5; G.,
1.06--1.07; color, brilliant black; S.. rich brown. Brittle.

GLAUBERITE. Sulphate of lime and soda H.. 2.5--3J
-G., 2.7--2.8S; color, pale yellow or gray, sometimes brick
red. Comp.. sulphur trioxide, 57.6; lime. 20.1; soda. 22.3.

GOLD. Native gold.

GOSLARITE. Hydrous sulphate of zinc. H.. 2.5-3:
G., 1.9-2.1; color, white, reddish, bluish, yellowish,
Comp., sulphur trioxide. 27.9; zinc oxide. 28.2; water.
43.9.

GRAPHITE. Carbon, often impure from mixture of
clay, iron, etc. H., 1--2; C... 2.09--2.23; color, iron black
to steel gray.

GROSSULARITE... Calcium-aluminium garnet. H.
6.5--7.S; G., 3.55--3.66; color, white, pale green, amber
and honey yellow, wine yellow, brownish yellow, cinna-
mon brown, pale rose red. rarely, emerald green from
presence of chromium. Comp.. silica. 40; alumina. 22.7:
lime. 37.3.

GUMMITE. Altered uraninite of doubtful composi-
tion. H.. 2.5--3; <;.. 3.9--4.20; color, reddish yellow to
orange or hyacinth red. reddish brown; S.. yHlmv. Con-
tains a larse percentage of uranium trioxide.

GYPSUM. Hydrous sulphate of calcium. TI.. l.:>--2:
G.. 2.31--2.32; color, usually white, sometimes gray, llc-h
red. honey yellow, ochre yellow, blue, impure variitic-

Utah Minerals and Localities. 19

often black, brown, red or reddish brown; S., white.
Comp.. sulphur trioxide, 46.6;t lime, 32.2; water, 20.9.

HALITE. Rock salt. Chloride of sodium. H., 2.5;
G., 2.1--2.6; color, white, reddish, bluish, purplish. Comp.,
chlorine, 39.4; sodium, 60.6.

HEMATITE. Iron sesquoxide. H., 5.5--6.S; G., 4.9--
5.3; color, dark steel gray or iron black, when earthy,
red; S.. cherry red or reddish brown. Comp., oxygen,
30; iron, 70.

HESSITE. Telluride of silver. H., 2.5-3; G., 8.31 --
8.89; color, between lead gray and steel gray. Comp..
tellurium. 36.7; silver, 63.3.

HYALITE. Variety of opal. Color, clear colorless,
brownish or reddish. See opal.

ICELAND SPAR. Transparent, doubly refracting cal-
cite.

JAROSITE. Hydrous sulphate of iron and potassium.
H.. 2.5--3; G.. Utah mineral, 3.16; color, yellow, yellow-
ish brown, clove brown, to nearly black; S., yellow,
shining. Comp.. Utah mineral, sulphur trioxide. 28.93;
iron >, squioxide, 51.16; potassium. 9.5; water, 10.24.

JASPER. Quartz colored with iron oxides. H., 7;
G., 2.60; color, red, brown, gray, yellow, blackish, green,
or banded in. various colors.

KAOLINITE. Hydrous silicate of aluminium. H..
2- -2.o: G.. 2.6--2.G3; color, white, grayish white, yellow-
ish, sometimes bluisn or reddish. Comp.. silica, 46.5;
alumina. 39.5; water, 14.

LEADHILITE. Sulpho-carbonate of lead. H., 2.5;
G., 6.26--6.44; color, white, yellow, gray, greenish; S.,
uncolored. Comp., sulphur trioxide. 7.4; carbon dioxide,
S.2: had oxide, 82.7; water. 1.7.

LETTSOMITE. Hydrous sulphate of copper and
aluminium. Color, clear smalt blue, passing into sky
blue. C'omp.. Utah mineral, sulphur trioxide, 12.60;
alumina. 15.45; cupric oxide, 49.54; water, 21.50, with a
little iron.

LIMONITE. Hydrous sesquioxide of iron. H.. 5-5.5;
G.. (i.3--(i.4. coin- of fracture, various shades of brown,
commonly dark when earthy, brownish yellow, ochre
yellow; S.. yellowish brown. Comp.. oxygen, 25.7; iron,
59.8; water'l4.5.

LINARITE. Hydrous sulphate of copper and lead,
II.. 2.5: G.. 5.5-5.45: color, deep azure blue; 8.. pale
blue. Comp.. sulphur trioxide. 20; lead oxide, 55.7;
eupric oxide. 19.8; water. 4.5.

LODESTONE. Magnetite, highly magnetic, or exhib-
iting polarity.

LUCKITE. Variety of melanterite. Comp.. sulphur.
trioxide. 20.3; iron protoxide. 21.7; manganese oxide,
1.9: water. 42.2. with small quantities of magnesium,
calcium, etc.

MAGNETITE. Sesquioxide and protoxide of iron. H.,

Utah Minerals and Localities.

5.5--G.5; G., 5.16--5.18; color, iron black; S., black.
Coinp., oxygen, 27.6; iron, 72.4.

MALACHITE. Hydrous carbonate of copper. H.. 3.5
--4; G.. 3.0--4.3; coloV, bright green; S., paler than color.
Comp., carbon dioxide, 10.9; cupric oxide, 71.9; water, 8.2.

MALLARDITE. Hydrous sulphate of manganese.
Colorless. Comp., sulphur trioxide, 28.9; manganese
protoxide. 25.6; water, 45.5.

MANGANITE. Hydrous manganese oxide. H., 4; G.,
2- -4.44. Color, dark steel gray to iron black. S., red-'
dish brown to nearly black. Comp.. o.xyg. n 27.3. man-
ganese 62.4, water 10.3.

MARTITE. Iron sesquioxide in octahedral form, sup-
posed to be pseudomorphous after magnetite or pyrite.

MELACONITE. Black cupric oxide. H., 3-4 ; '«.. r,.S2
--6.25; color, steel or iron gray in scales; wh.n earthy
black or grayish black, and ordinarily soiling the fingers
when massive or pulverulent. Comp.. oxygen. 2||.2:
copper, 79.8.

MELANTERITE. Hydrous ferrqiM sulphate. II.. 2;
G.. 1.89--1.90; color, various shades of- green to white.
Com])., sulphur trioxide, 28.8; iron protoxide, 25.9;
water. 45.3.

MIMETITE. Chlor-arsfnate of lead. H.. 3..>: <:.. 7--
7.25; color, pale yellow to brown; color Utah mineral,
white, colorless, pale yellow to orange yellow; S., white
or marly so. Comp.. arsenic pentoxide. 2:5/2: lead prot-
oxide. 74.9; chlorine. 2.-1.

MINIUM. Oxide of lead. H.. 2--3: G.. 4.(i: COlQT,
vivid red mixed with yellow: S.. orange yellow. Comp..
oxygen, 9.4; lead. 90.6.

MIRABILITE. Hydrous -...dinni -ulphate. 11.. 1.5--2:
G.. 1.481; color, white. C nip., sulphur trioxide. 24. s;
M>da. 19.3: water. 55.9.

MIXITE. 1 Iv,lrou> ar-enate of copper and bismuth.
H., 3--4; G., 3.79; color, emerald green to bluish green.

fale green or whitish; S., lighter than color. Comp..
"tali mineral, arsenic pentoxide. 28.79; bismuth tri-
oxide, 11.18; cupric oxide, 43.89: /.inc oxide. 2.7(1. \\.th
traces of iron, calcium, prospliortis ami silica;

MOLYBDENITE. Molybdenum disulphide. H.. 1
1.5; G., 4.7--4.8; color, pure lead gray: S.. bluish grav
on paper; on porcelain, slightly greenish. Com]).. s\il-
phur. 40; molybdenum, GO.

MOLYBITE. Oxide of molybdenum.
49--4.50. Color, straw yellow, yellowish
Oxygen 33.3. molybdenum till. 7.
MONAZITE. Phosphate of cerium mine;
(i.. 4.9--5.3. Color, hyacinth red. clove In
vellowish lirown.

MOSS AGATE. ( naleedony filled with dendritic or
moss-like forms of manganese or magnetite.

MUSCOVITE. :\iainlv an orthosilieaie of nluminium

Utah Minerals and Localities.

and potassium. H., 2—2.5; G., 2.76-3; color, gray,
brown, hair brown, pale green, violet, yellow, dark olive
green, colorless, rarely rose red; S., uncolored. Comp.,
>inca. 45.2; alumina, 38.5; potash, 11.8; water, 4.5.

OBSIDIAN. Volcanic "lass. Comp.. silica, usually
microlitic.

OLIVENITE. Hydrous arsenate of copper. H., 3; G.,
4.1 --4.4; col;;r, various shades of olive green passing into
lock, >iskin. pistachio, and blackish green, liver and
Wood brown, straw yellow, grayish white, white, va-
rious shades of red; S.. olive green to brown. Comp.,
l.'tah variety (wood copper), arsenic pent oxide, 40.5;
cupric oxide, 55.40; water, 3.39.

OLIVINE. Silicate of magnesium and iron. H.. 6.5-
7; G.. 3.27-3.57 ; color, olive green, sometimes brownish,
grayish red. grayish green; S., uncolored, rarely yellow-
ish. Com])., approximately, silica, 42.30; magnesia.
51.40: iron oxide. 5.1; with traces of alumina, calcium,
etc.

ONOFRITE. Sulpho-selenidc of mercury. H., 2.5;
G., 7.98--8.09; color and S., blackish lead gray. Comp.,
rtah mineral, sulphur, 11.68; selenium. 4.58: mercury,
81.93; with traces of zinc and manganese.

OPAL. Hydrous silica. H., 5.5-0; G., 1.9-2.3; when
pure. G.. 2.1 --2.2; Utah mineral mostly the ordinary
milky opal, without fire.

ORPIMENT. Arsenic trisulphide. H., 1.5-2; G., 3.4-
3.5; color, lemon yellow of various shades; S., paler
than color. Como., sulphur. 39; arsenic, til.
. . ORTHOCLASE. Silicate of aluminium and potassium.
H.. 6; G., 2.57; color, white, pale yellow, flesh red. gray,
rarely green, colorless, S., uncolored. Comp., silica.
<i4.7;' alumina. 18.4; potash. 16.9.

OZOCERITE. Hydrocarbon. G.. Utah mineral. 0.971 ;
color. Utah minon.l. black, greenish black, waxy. Comp..
carbon. 85.44: livdrugen. 14.45.

PHARMACOSIDERITE. Hydrous arscnate of iron.
11.. 2.5; G.. 2.9-3; color, olive green, blackish green,
honey yellow to yellowish brown, grass green, hyacinth
red, emerald green; S.. green to brown, pale yellow.
Comp.. arsenic pentoxide, 43.1; iron sesquioxide, 40;
water. 16.9.

PEARCEITE. Sulph-arsenite of silver. H.. 3; G.,
6.15: color and S., black. Utah crystals generally
bluish externally. Comp.. approximately, sulphur. 17.71;
arsenic. 7.39: silver. 55.17: copper. 18.11. with traces
of iron, etc.

PITTISCITE. Hydrous arsenate and sulphate of fer-
ric iron, of doubtful formula. H., 2-3; G., 2.2-2.5;
color, yellowish to reddish brown, blood red. white. S.,
yellow to white. Oomp., Utah mineral, arsenic pent-
oxide. 39.65; sulphur trioxide. 1.14; iron sesquioxide.
33.89; cupric oxide. 1.17: >ilica. 1.92: insoluble. 4.08.

Utah Minerals and Localities.

PROSOPITE. Hydrous fluoride of aluminium and cal-
cium. H., 4.5; G., 2.88-2.89; color, white, grayish, color-
less. Utah mineral, bluish white to turquoise blue.
Comp., Utah mineral, fluorine, 29.95; calcium, 16.85;
aluminium, 22.74; wateTr, 16.12; oxygen, 14.34.

PROUSTITE. Sulph-arsenide of silver. H., 2-2.5;
G., 5.57- -5.64; color, scarlet vermilion; S., like color,
inclined to red. Comp., sulphur, 19.4; arsenic, 15.2; sil-
ver, 65.4.

PRASE. Dull leek green quartz.

PYRARGYRITE. Sulph-antimonide of silver. H.,
2.5; G., 5.57--5.S6; color, dark red or black to grayish
black, by transmitted light deep red; S., purplish red.
Comp., sulphur, 17.8; antimony, 22.3; silver, 59.9.

PYRITE. Iron di-sulphide. ' H., 6-6.5; G., 4,95-5.10;
color, pale brass yellow; S., greenish black or brownish
black. Comp.. sulphur, 53.4; iron, 46.6.

PYROLUSITE. Manganese dioxide. H., 2-2.5; G.,
4.69-4.86; color, iron black, dark steel gray, some-
times bluish; S., black or bluish black, sometimes sub-
metallic. Oomp., manganese oxide, 79.14; oxygen, 17.27;
water, 2.33, with traces of calcium, etc.

PYROMORPHITE. Phosphate and chloride of lead.
H.. 3.5-4; G., 6.5-7.1; color, green, yellow, brown, gray-
ish white, white, wax yellow, orange yellow; S.. white,
sometimes yellowish. Comp.. phosphorus pentoxide, 15.7;
lead protox'ide. 82.2; chlorine. 2.6.

PYROPE. Magnesia alumina garnet. H.. 7-7.5: <;..
3.70--3.75; color, deep red to nearly black, orange brown,
purplish red. Comp.. silica. 44.8; alumina. 25.4; mag-
nesia, 29.8.

QUARTZ. Silicon dioxide. H.. 7: G.. 2.00-2.65; color-
less when pure, often various shade-* of yellow, red.
brown, green, blue, black: S.. white when pure; if im-
pure, often of same color, but paler. Comp.. oxvg. n.
53.3; silicon. 46.7.

REALGAR. Arsenic mono-sulphide. H.. 1.5-2: (i.,
3.556; color, aurora red to orange yellow: S.. orange red
to aurora red. Com))., sulphur. 29. 9: arsenic. 70.1.

RHODOCHROS1TE. Manganese protocarbonate. II..
3.5-4; G., 3.45-3.60 and higher; color, various shades
of rose red, yellowish gray, fawn colored, dark red,
brown; S., white. Comp., carbon dioxide, 38.3; manga-
nese protoxide, 61.7; iron carbonate frequently present,
and carbonates of calcium, magnesium, zinc, and rarely
cobalt."

SATIN SPAR. Finely fibrous variety of gypsum, with
pearly opalescem*?.

SCORODITE. Hydrous ferric arsenate. H.. 3.5-4:
G.. 3.1--3.3; color, pale leek green or liver brown: S..
white. Comp.. arsenic pcntnxide. 4!).S; iron sesquioxide.
34.6; water. 15.6.

SELENITE. Crvstali/nl -\ p-uin

SILVER. Xativi. silver.

Utah Minerals and Localities. 23

SMITHSONITE. Carbonate of zinc. H., 5; G.. 4.30- -
4.45; color, white, grayish, greenish, brownish, some-
times brown, green, blue green or yellow; S.. white.
Comp.. carbon dioxide. 35.2; zinc protoxide, (54.8.
. .SPHALERITE. Sulphide of zinc. H.. 3.5--4; G.,
3.9--4.1; color, yellow, brown, black, red, green to white,
when pure, nearly colorless; S., brownish to light yellow,
and white. Comp.. sulphur, 33; zinc. 67.

STIBNITE. Sulphide of antimony. H.. 2; G., 4.52--
4.(>~2: color and S., lead gray, inclined to sieel gray.
Comp. ..sulphur, 28.G; antimony, 71.4.

STEPHANITE. Sulph-antimonate of silver. H., 2-
2.o; (i.. 6.2--G.3; color and S., iron black. Comp.. sulphur
10.3; antimony. 15.2; silver. 68.5.

SPHERULITES. Globular concretions consisting of
orthoclase of a light gray color, and in the Utah obsi-
dian having a radiating fibrous structure.

TETRADYMITE. Telluride of bismuth. H., 1.5--2;
(i.. 7.2--7.6; color, pale steel gray. Streak soils paper.
Comp.. approximately tellurium. 48; bismuth, 52.

TETRAHEDRITE! Sulph-antimonate of copper. H.,
3.5- -4; G.. 4: 4- -5.1; color, between flint gray and iron
black; S.. like color, sometimes inclined to brown and
cherry red. Comp.. sulphur, 23.1; antimony. 24.8; cop-
per. 52.1.

TIEMANNITE. Mercuric selenide. H.. 2.5; G., Utah
crystals. 8.30- -8.47; color, steel gray to blackish lead
gray; S.. nearly black. Comp., Utah mineral, selenium
29.19; mercury. 69.84; with traces of sulphur and cal-
cium.

TOPAZ. Fluo-silicate of aluminium. H., 8; G.. Utah
mineral from Thomas Mts.. 3.565; color, straw yellow,
wine yellow, white, grayish, greenish, bluish, reddish.
Utah mineral sherry colored, colorless, white, grayish,
black; S.. uncolored. Comp., Utah colorless crystals,
silica. 31.93; alumina. 56.26; fluorine. 20.37; water', 0.19;
less 0.8.58.

TOURMALINE. A complex silicate of boron and
aluminium. H.. 7--7.S: G.. 2.98--3.20; color, black, brown-
ish black, bluish black, most common, sometimes rich
shades of blue, green, red, rarely white or colorless.
Sometimes red internally and green externally, or band-
ed in various shaues of colors mentioned.

TRAVERTINE. Limestone deposited in beds from
calcareous solutions, usually banded in various colors,
such as lemon yellow, orange yellow, brown, black,
greenish, grayish. Frequently contains a small amount
of silica.

TSCHERMIGITE. Hydrous sulphate of aluminium and
ammonium! H.. 1--2: G.. 1.50; color, white. Comp.,
ammonium sulphate. 14.6: aluminium sulphate. 37.7:
water. 47.7.

TYROLITE. Hydrous arsenate of copper. H.. 1--1.5;

Utah Minerals and Localities.

G., 3.02- -3.09; color, pale apple green, green and verdigris
green, inclining to sky blue; S., paler than color. Comp.,
Utah mineral, arsenic pentoxide, 28.78; cupric oxide,
45.52; calcium oxide, as an impurity, 6.84; water, 17.26;
with small quantities ot zinc, magnesia, etc.

URANINITE. Uranate of uranyl. H., 5.5; G., 9-9.7;
'color, grayish, greenish, olive green, velvet black; S.,
brownish black, grayish, olive green, a little shining.
Rich in uranium, and usually containing the rare metals,
zirconium, lanthanum, yttrium, and sometimes small
quantities of nitrogen and lead.

UTAHITji. Hydrous sulphate of iron. Color, orange
yellow, with silky lustre. Comp., sulphur trioxide. 28.45;
iron sesquioxide. 58.82; • water, 9.35; arsenic pentoxide,
3.19.

VARISCITE. Hydrous phosphate of aluminium. H.,
4; G., 2.408; color, deep emerald green, bluish green to
colorless. Comp., Utah mineral, phosphorous pentoxide,
44.40; alumina, 32.65; water, 22.95.

VESUVIANITE. A basic calcium-aluminium silicate
of uncertain formula. H.. 6.5; G., 3.3S--3.45; color, brown
to green, occasionaly sulphur yellow, and pale blue. S.

V ii it '•.

WARDITE. Hydrous phosphate of aluminium. H., 5;
G., 2.77; color, green, bluish green; S.. whito. Comp.,
phosphorus pentoxide. 34.46; aluminium trioxide. 38.2.1;
sodium oxide, 5.98; magnesium oxide. 2.40; with small
quantities of copper, iron and potassium oxides, '.vah-v
17.87. '

WHEELERITE. A yellowish resin, resembling amber.
Melts at 154 degrees. Comp.. about, carbon, 73.:)7; hy-
(Lugen. 7.95: oxygen, undetermined.

WOLLASTONITE. Calcium meta-silicate. H.. 4.5-5;
G.. * 2. 8—2.9; color, white inclined to gray, yellow, red,
or brown; S., white. Comp.. silica. 51.7; iime. 49.3.

WULFENITE. Molybdate of lead. H.. 2.75-3; G.,
6.7-7; color, wax yellow, passing into orange yellow,
siskin and olive green, yellowish gray, grayish white to
nearly colorless, brown, also orange to bright red; 8..
white. Comp., molybdenum trioxide. 39.3: lead oxide,
60.7.

WURTZILITE. Hydrocarbon compound. H., 2-3; G.
1.03; color, jet black, brilliant, in very thin plates deep
red by transmitted light. Somewhat seetilc. and thin
shavings show some elasticity.

ZEUNERI'i^. Arsenate of copper and uranium. H.,
2-2.5; G.. 3.2; color, grass green to emerald and apple
green, greenish yellow. Comp., arsenic pentoxide, 22.3:
uranium, trioxide, 56; eupric oxide, 7.7; water, 14.

ZINCITE. Zinc oxide. H., 4-4.5; G., 5.43-5.7: S.. or-
ange yellow; color, deep red. also orange yellow. Comp..
oxygen. 19.7; zinc. 80.3.

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