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
Silent Friend, Lawson 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 Silent Friend, Lawson Mining District, Clear Creek County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:659554
Long-form Identifier:1:3:659554:8
GUID (UUID V4):0
Nearest other occurrences of Tennantite Subgroup
2.0km (1.2 miles) ⓘFreeland Mine & Extension Mine (Extension Line Shaft; Minnie Tunnel; Diamond Tunnel; Platt Tunnel; Freeland Shaft), Lamartine Mining District, Clear Creek County, Colorado, USA
2.1km (1.3 miles) ⓘOld Settler Mine & Tunnel, Lawson Mining District, Clear Creek County, Colorado, USA
2.5km (1.6 miles) ⓘJoe Reynolds (Elida), Lawson Mining District, Clear Creek County, Colorado, USA
2.6km (1.6 miles) ⓘUnion Tunnel, Lawson Mining District, Clear Creek County, Colorado, USA
2.9km (1.8 miles) ⓘMary Mine (Phillips tunnel), Fall River, Clear Creek County, Colorado, USA
3.1km (1.9 miles) ⓘAlmaden Mine, Fall River, Clear Creek County, Colorado, USA
3.3km (2.0 miles) ⓘFall River, Clear Creek County, Colorado, USA
3.4km (2.1 miles) ⓘLittle Champion (Megalona), Donaldson Group, Lawson Mining District, Clear Creek County, Colorado, USA
3.4km (2.1 miles) ⓘLucania tunnel, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
3.5km (2.2 miles) ⓘLawrence L Mine, Idaho Springs Mining District (Virginia Mining District), Clear Creek County, Colorado, USA
References
Lovering, T.S., Goddard, E.N. (1950) Geology and ore deposits of the Front Range, Colorado. Professional Paper 223. US Geological Survey doi:10.3133/pp223
 
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