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


Locality type:Deposit
Classification
Species:Muscovite var: Sericite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sericite 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:435304
Long-form Identifier:1:3:435304:1
GUID (UUID V4):0
Nearest other occurrences of Sericite
26.1km (16.2 miles) ⓘIron Mountain Mine (Iron Mountain Deposit; Iron Mountain Titaniferous Magnetite Deposit), McClure Mountain Complex, Fremont County, Colorado, USA
30.8km (19.1 miles) ⓘDawson Gold project, Fremont County, Colorado, USA
32.6km (20.3 miles) ⓘGoldie carbonatite, Fremont County, Colorado, USA
38.4km (23.9 miles) ⓘLorain Pegmatite, Eight Mile Park Pegmatite Mining District, Fremont County, Colorado, USA
42.9km (26.6 miles) ⓘCotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill), Mine Gulch, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
44.4km (27.6 miles) ⓘMcCoy prospects, Cotopaxi Pegmatite area, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
44.7km (27.8 miles) ⓘColorado Feldspar Pegmatite, Cotopaxi Mining District, Fremont County, Colorado, USA
50.5km (31.4 miles) ⓘPine Ridge pegmatite, Cotopaxi Pegmatite area, Cotopaxi, Cotopaxi Mining District, Fremont County, Colorado, USA
65.4km (40.6 miles) ⓘVilla Grove Turquoise Mine, Bonanza Mining District (Kerber Creek Mining District; Blake Mining District), Saguache County, Colorado, USA
69.1km (42.9 miles) ⓘAjax Mine, Cripple Creek Mining District, Teller 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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