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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Tennantite Subgroup from
Bullion mine, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA


Locality type:Mine
Classification
Species:'Tennantite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)As4S12S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tennantite Subgroup data
Locality Data:Click here to view Bullion mine, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:608374
Long-form Identifier:1:3:608374:8
GUID (UUID V4):0
Nearest other occurrences of Tennantite Subgroup
0.1km (0.1 miles) ⓘBoreas, Lawson Mining District, Clear Creek County, Colorado, USA
0.3km (0.2 miles) ⓘHayes Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
0.4km (0.3 miles) ⓘFrontenac Shaft, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
0.5km (0.3 miles) ⓘSeaton Mine, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
0.5km (0.3 miles) ⓘLead Belt Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
0.5km (0.3 miles) ⓘFoxhall, Lawson Mining District, Clear Creek County, Colorado, USA
0.6km (0.4 miles) ⓘBrighton No. 2 Claim, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
0.6km (0.4 miles) ⓘEsmeralda, Lawson Mining District, Clear Creek County, Colorado, USA
0.7km (0.4 miles) ⓘEast Lake Occurrence, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
0.8km (0.5 miles) ⓘSanta Fe Shaft West, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
References
Moench, Robert Hadley, Drake, Avery Ala (1966) Mines and Prospects, Idaho Springs District, Clear Creek and Gilpin Counties, Colorado - Descriptions and Maps. Open-File Report Vol. 1966 (66-87) US Geological Survey doi:10.3133/ofr6687
 
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