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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Jarosite from
Mount Robinson Deposit (Cowan Knoll), Rosita Mining District, Custer County, Colorado, USA


Locality type:Deposit
Classification
Species:Jarosite
Formula:KFe33+(SO4)2(OH)6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Jarosite data
Locality Data:Click here to view Mount Robinson Deposit (Cowan Knoll), Rosita Mining District, Custer County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:435307
Long-form Identifier:1:3:435307:2
GUID (UUID V4):0
Nearest other occurrences of Jarosite
1.7km (1.1 miles) ⓘBelcher prospect, Rosita Mining District, Custer County, Colorado, USA
2.7km (1.7 miles) ⓘIron Mountain Mine (Iron Mine; Iron Hill Mine), Rosita Mining District, Custer County, Colorado, USA
2.9km (1.8 miles) ⓘKnickerbocker Hill, Rosita Mining District, Custer County, Colorado, USA
8.9km (5.5 miles) ⓘRacine Boy Mine, Silver Cliff Mining District, Custer County, Colorado, USA
9.1km (5.7 miles) ⓘSilver Cliff Quarry, Silver Cliff Mining District, Custer County, Colorado, USA
10.8km (6.7 miles) ⓘRound Mountain Prospect, Silver Cliff Mining District, Custer County, Colorado, USA
11.3km (7.1 miles) ⓘBen West Hill, Silver Cliff Mining District, Custer County, Colorado, USA
11.4km (7.1 miles) ⓘBen West Hill, Rosita Mining District, Custer County, Colorado, USA
11.5km (7.1 miles) ⓘHerman Passiflora Mine (Shafts: Vidler; Edman; Baker; Rey; Blunt; Denver Lease; Claims: Thames River; Ten To One; Songbird), Silver Cliff Mining District, Custer County, Colorado, USA
11.7km (7.2 miles) ⓘSongbird Mine, Silver Cliff Mining District, Custer 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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