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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Autunite from
Black King Mine (Black King No. 4; Black King No. 5; Black King No. 5 Claim; Unpatented Claims: Black King No. 1; Evans Claims; Weatherly Claims), Placerville Mining District, Lower San Miguel Mining District, San Miguel County, Colorado, USA


Locality type:Mine
Classification
Species:Autunite
Formula:Ca(UO2)2(PO4)2 · 10-12H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Autunite data
Locality Data:Click here to view Black King Mine (Black King No. 4; Black King No. 5; Black King No. 5 Claim; Unpatented Claims: Black King No. 1; Evans Claims; Weatherly Claims), Placerville Mining District, Lower San Miguel Mining District, San Miguel County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:429833
Long-form Identifier:1:3:429833:5
GUID (UUID V4):0
Nearest other occurrences of Autunite
50.2km (31.2 miles) ⓘClyde Long property, Elk Park, San Juan County, Colorado, USA
53.1km (33.0 miles) ⓘBeth Group, Uncompahgre Peak Area, Hinsdale County, Colorado, USA
64.9km (40.3 miles) ⓘThunder Mountain, Needle Mountain Mining District, La Plata County, Colorado, USA
71.3km (44.3 miles) ⓘBarkley; Shattuck - Denn; La Salle, Montrose 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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