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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Muscovite from
Defiance Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA


Locality type:Mine
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Defiance Mine, Darwin Mine (Anaconda; Bernon Mine; Defiance Mine; Essex Mine; Independence Mine; Intermediate Mine; Rip Van Winkle Mine; Thompson Mine), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1007336
Long-form Identifier:1:3:1007336:0
GUID (UUID V4):0
Nearest other occurrences of Muscovite
4.1km (2.5 miles) ⓘDarwin Mining District, Darwin Hills, Inyo County, California, USA
56.9km (35.4 miles) ⓘKeynot Mine (Key Not Mine; Golden Princess; Mountain View; War Eagle; Keynot; Keynote Mine; Mallard Duck), Keynot Peak, Inyo Mts (Inyo Range), Inyo County, California, USA
67.3km (41.8 miles) ⓘEagle Borax Spring, Inyo County, California, USA
92.2km (57.3 miles) ⓘCedar Hill Mine, Camp Wishon, Tulare County, California, USA
94.6km (58.8 miles) ⓘBullfrog Mine (Original Bullfrog Mine), Bullfrog Mining District, Bullfrog Hills, Nye County, Nevada, USA
99.2km (61.6 miles) ⓘBright Star Mine (Bright Star prospect), Weldon, Weldon District, Piute Mountains, Kern County, California, USA
References
Knopf, Adolf (1914a), The Darwin silver-lead mining district, California: USGS Bulletin 580: 1-18.
 
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