Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Malachite from
Cotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA


Locality type:Mine
Classification
Species:Malachite
Formula:Cu2(CO3)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Malachite data
Locality Data:Click here to view Cotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:149187
Long-form Identifier:1:3:149187:6
GUID (UUID V4):0
Nearest other occurrences of Malachite
9.1km (5.7 miles) ⓘDirty Gulch Mine (Copper Prince Mine?), Red Gulch Mining District, Fremont County, Colorado, USA
12.5km (7.8 miles) ⓘColorado Copper Company Mine, Red Gulch Mining District, Fremont County, Colorado, USA
12.6km (7.8 miles) ⓘCopper Prince Mine, Red Gulch Mining District, Fremont County, Colorado, USA
14.1km (8.7 miles) ⓘDevil's Hole Mine, Fremont County, Colorado, USA
15.1km (9.4 miles) ⓘRed Gulch Mine, Red Gulch Mining District, Fremont County, Colorado, USA
16.4km (10.2 miles) ⓘPine Canyon Lode Occurrence (Southmost Claim Group), Wellsville Area, Fremont County, Colorado, USA
16.7km (10.4 miles) ⓘAcme Property, Red Gulch Mining District, Fremont County, Colorado, USA
16.7km (10.4 miles) ⓘQueen Princess Property, Red Gulch Mining District, Fremont County, Colorado, USA
21.6km (13.4 miles) ⓘLittle Giant Claims, Copper Gulch Area, Deweese Plateau, Fremont County, Colorado, USA
24.9km (15.5 miles) ⓘCopper Girl (Copper Girl 1906; Patented Claims: Valley View), Copper Gulch Area, Grape Creek Mining District (Greenhorn Mining District), Fremont County, Colorado, USA
References
Am Min 50:1179-1212
Pearl, Richard M. (1958) Colorado Gem Trails and Mineral Guide (1st ed.) Sage Books, Denver, CO.
 
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