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
Alma Lincoln Mine, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA


Locality type:Mine
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 Alma Lincoln Mine, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:360520
Long-form Identifier:1:3:360520:2
GUID (UUID V4):0
Nearest other occurrences of Pearceite
0.8km (0.5 miles) ⓘLittle Champion (Megalona), Donaldson Group, Lawson Mining District, Clear Creek County, Colorado, USA
0.9km (0.6 miles) ⓘPhoenix Shaft, Lawson Mining District, Clear Creek County, Colorado, USA
1.4km (0.9 miles) ⓘFall River, Clear Creek County, Colorado, USA
1.5km (0.9 miles) ⓘEdgar Shaft, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
2.0km (1.3 miles) ⓘP T Shaft, Lamartine Mining District, Clear Creek County, Colorado, USA
4.9km (3.1 miles) ⓘAlmaden Mine, Fall River, Clear Creek County, Colorado, USA
5.3km (3.3 miles) ⓘTwo Brothers Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
5.6km (3.5 miles) ⓘIda May occurrence (Seven Forty; Barney; Polar Star; Alamaden; Standard; Lida; ; Fall River; Thomas; Golconda), Central City Mining District, Clear Creek County, Colorado, USA
6.4km (4.0 miles) ⓘJoe Reynolds (Elida), Lawson Mining District, Clear Creek County, Colorado, USA
7.1km (4.4 miles) ⓘAmerican Sisters Mine, Lawson Mining District, Clear Creek County, Colorado, USA
References
USGS OFR 66-87(Moench,1966)
 
and/or  
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