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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Pearceite from
Grizzly Gulch, Montezuma Mining District (Snake River Mining District), Summit County, Colorado, USA


Locality type:Gulch
Classification
Species:Pearceite
Formula:[Ag6As2S7][Ag9CuS4]
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pearceite data
Locality Data:Click here to view Grizzly Gulch, Montezuma Mining District (Snake River Mining District), Summit County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:490502
Long-form Identifier:1:3:490502:8
GUID (UUID V4):0
Nearest other occurrences of Pearceite
2.6km (1.6 miles) ⓘEquity Mine, Montezuma Area, Summit County, Colorado, USA
2.8km (1.7 miles) ⓘSaints John Mine (Florado; Saint John Mine), Montezuma Area, Summit County, Colorado, USA
3.3km (2.1 miles) ⓘBurke Martin Mine (Silver Wing), Snake River, Montezuma Area, Summit County, Colorado, USA
4.5km (2.8 miles) ⓘAtlantic Mine, Montezuma Area, Summit County, Colorado, USA
5.6km (3.5 miles) ⓘRed Jacket (Star of the West; Star of the West No. 2; Mohawk; Iowa), Montezuma Area, Summit County, Colorado, USA
10.2km (6.3 miles) ⓘArgentine Pass, Summit County, Colorado, USA
18.5km (11.5 miles) ⓘIllinois, Georgetown District, Clear Creek County, Colorado, USA
18.7km (11.6 miles) ⓘDunkirk, Georgetown District, Clear Creek County, Colorado, USA
19.6km (12.2 miles) ⓘGabanta, Georgetown District, Clear Creek County, Colorado, USA
26.5km (16.4 miles) ⓘCopper Mountain (Cooper Mountain), Kokomo-Tenmile area, Summit County, Colorado, USA
References
Eckel, Edwin Butt; Cobban, Robert R.; Mosburg, Shirley K.; Foord, Eugene E. (1997) Minerals of Colorado. Fulcrum Publishing.
 
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