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Cotopaxi Mine (Cotopaxi Lode; Gumaer Mine; Fannie Lode; Fannie Mill), Cotopaxi District, Fremont Co., Colorado, USA

This district is 25 mi east of Salida via U.S. Highway 50. Located in a small gulch about 0.5 mi northwest of the bridge across the Arkansas River at Cotopaxi in E 1/2 SE 1/4 sec. 25, T. 48 N., R. 11 E. Mine dumps along the gulch at the west edge of town, near the cemetery, have yielded specimens.
Ref: "Minerals of Colorado, updated & revised", p. 14, by Eckel, Edwin B., 1997
American Mineralogist (1965) 50:1179-1212

Mineral List

Actinolite
Albite
var: Oligoclase
Almandine
Amesite
Anglesite
Anorthite
var: Labradorite

Anthophyllite
'Apatite'
Azurite
Biotite
Calcite
Chalcopyrite
'Chlorite Group'
Chrysocolla
Clinohumite
Clinozoisite
Cordierite
Covellite
Cuprite
Diopside
Epidote
Fluorite
Forsterite
Gahnite
Galena
'Garnet'
Goethite
Gypsum
Hematite
'Hornblende'
Ilmenite
Leucoxene
Limonite
Linarite
Magnetite
Malachite
Marcasite
Microcline
var: Amazonite
Molybdenite
Muscovite
var: Sericite
Phlogopite
Pyrite
Pyrrhotite
Quartz
Rutile
'Scapolite'
Scheelite
Schorl
'Serpentine Group'
Siderite
Sillimanite
Silver
Sphalerite
Strontianite
Tetrahedrite
Titanite
'Tourmaline'
Zircon
Zoisite
var: Thulite


63 entries listed. 48 valid minerals.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in Colorado, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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