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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Serpentine Subgroup from
Cripple Creek Mining District, Teller County, Colorado, USA


Locality type:Mining District
Classification
Species:'Serpentine Subgroup' (not an IMA approved species)
Formula:D3[Si2O5](OH)4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Serpentine Subgroup data
Locality Data:Click here to view Cripple Creek Mining District, Teller County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:303409
Long-form Identifier:1:3:303409:5
GUID (UUID V4):0
Nearest other occurrences of Serpentine Subgroup
41.2km (25.6 miles) ⓘDawson Gold project, Fremont County, Colorado, USA
58.1km (36.1 miles) ⓘJohn Spalding Occurrence (Spaulding), Custer County, Colorado, USA
60.9km (37.8 miles) ⓘCotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
62.2km (38.6 miles) ⓘVermiculite Mine (MRDS - 10013422), Gem Park complex, Fremont County, Colorado, USA
98.7km (61.4 miles) ⓘTaylor Gulch, Monarch Mining District, Chaffee County, Colorado, USA
References
Carnein, Carl R., Bartos, Paul J. (2005) Famous mineral localities: The Cripple Creek Mining District, Colorado, in March - April 2005. The Mineralogical Record, 36 (2) 143-185
 
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