CATALOGUE OF AMERICAN LOCALITIES CF MINERALS. 369: 
COLORADO. 
The principal gold mines of Colorado are in Boulder, Gilpin, Clear 
Creek, and Jefferson Counties, on a line of country a few miles W. of 
Denver, extending from Long’s Peak to Pike’s Peak. A large portion 
of the gold is associated with veins of pyrite and chalcopyrite ; silver 
and lead mines are at and near Georgetown, Clear Creek County, and 
to the westward in Summit County, on Snake and Swan rivers. 
At the GEORGETOWN mines are found :—native silver, pyrargyrite, 
rgentite, tetrahedrite, pyromorphite, galenite, sphalerite, azurite, 
ragonite, barite, fluorite, mica. 
TRAIL CREEK.—Garnet, epidote, hornblende, chlorite ; at the Frec- 
land Lode, tetrahedrite, tennantite, anglesite, caledonite, cerussite, 
tenorite, siderite, azurite, minium ; at the Champion Lode, tenorite, 
azurite, chrysocolla, malachite ; at the Gold Belt Lede, vivianite ; at 
the Kelly Lode, tenorite ; at the Coyote Lode, malachite, cyano- 
trichite. i 
Near BLack HAawxk.—At Willis Gulch, enargite, fluorite, pyrite; at 
the Gilpin County Lode, cerargyrite ; on Gregory Hill, feldspar ; 
North Clear Creek, lievrite —Galenite / 
BEAR CREEK.— Fluorite, beryl ; near the Malachite Lode, malachite, 
cuprite, vesuvianite, topazolite ; Liberty Lode, chalcocite. 
SNAKE RiveR. —Penn District, embolite ; at several lodes, pyrar- 
gyrite, native silver, azurite. 
- RussELL District.—Delaware Lode, chalcopyrite, crystallized gal- 
enite.—Epidote, pyrite. 
VireGiniA CANON.—Hpidote, fluorite ; at the Crystal Lode, native 
silver, spinel. 
Re Loa¥F Distrrict.—Chalcocite, pyrrhotite, garnet (mangane- 
sian). 
CENTRAL CiTy.—Garnet, tenorite; at Leavitt Lode, molybdenite ; 
on Gunnell Hill, magnetite ; at the Pleasantview mine, cerussite. 
; GOLDEN Crry.—Aragonite ; on Table Mountain, leucite in amygda- 
oid. 
BERGEN’s RANCHE.—Garnet, actinolite, calcite. 
BouLDER Co.—Red Cloud Mine: Native tellurium, altaite, hessite 
(petzite), sylvanite, calaverite, schirmerite. Keystone Mine: Colora- 
doite, magnolite, ferotellurite, tellurite, roscoelite ? also part of these 
at Smuggler mine and Mountain Lion mine. Grand View mine: syl- 
vanite, ete. 
LAKE Crty, at the Hotchkiss Lode.—Petzite, calaverite (?), ete. 
LAKE Co., Golden Queen mine.—Scheelite, gold. . 
PIKE’s PEAK, on Elk Creek.—Amazon-stone ! ! smoky quartz! aven- 
turine feldspar, amethyst, albite, fluorite, hematite, anhydrite (rare), 
columbite. 
‘  §$aAn JuAN Disrrict.—Gold, sphalerite, pyrite, galenite, chalcocite, 
covellite, chalcopyrite. 
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CANADA EAST. 
ABERCROMBIE.—Labradorite. 
AUBERT.—Gold, iridosmine, platinum. 
Bale 8t. Pauu.—-Menaccanite / apatite, allanite, rutile. 
