Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Tennantite Subgroup from
Sunnyside Tunnel, Fall River, Clear Creek County, Colorado, USA


Locality type:Tunnel
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 Sunnyside Tunnel, Fall River, Clear Creek County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:666135
Long-form Identifier:1:3:666135:9
GUID (UUID V4):0
Nearest other occurrences of Tennantite Subgroup
2.2km (1.4 miles) ⓘGolconda Mine, Fall River, Clear Creek County, Colorado, USA
2.3km (1.4 miles) ⓘKirk Mine, Quartz Hill, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
2.4km (1.5 miles) ⓘMary Mine (Phillips tunnel), Fall River, Clear Creek County, Colorado, USA
2.6km (1.6 miles) ⓘAlmaden Mine, Fall River, Clear Creek County, Colorado, USA
2.8km (1.8 miles) ⓘPatch Mine, Central City Mining District (Central Mining District), Gilpin County, Colorado, USA
3.0km (1.9 miles) ⓘCastleton Shaft, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
3.0km (1.9 miles) ⓘBourbon Tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
3.2km (2.0 miles) ⓘPewabic - Iron, Russell Gulch, Gilpin County, Colorado, USA
3.2km (2.0 miles) ⓘCrown Point & Virginia Shaft, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
3.2km (2.0 miles) ⓘJohn L. Frannie, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
References
Sims, P.K. (1963) Geology of uranium and associated ore deposits, central part of the Front Range mineral belt, Colorado. Professional Paper 371. US Geological Survey doi:10.3133/pp371
 
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