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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Orthoclase 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:Orthoclase
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Orthoclase 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:768756
Long-form Identifier:1:3:768756:3
GUID (UUID V4):0
Nearest other occurrences of Orthoclase
3.0km (1.8 miles) ⓘWonder Mine, Ophir Mountain, Darwin Mining District, Darwin Hills, Inyo County, California, USA
3.1km (1.9 miles) ⓘSt. Charles Mine, Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
3.5km (2.2 miles) ⓘFernando Mine (St. Charles; Hayward; Darwin Silver project; Fernando and St Charles), Darwin, Darwin Mining District, Darwin Hills, Inyo County, California, USA
4.1km (2.5 miles) ⓘDarwin Mining District, Darwin Hills, Inyo County, California, USA
33.0km (20.5 miles) ⓘUnnamed Hornblende occurrence [2], Little Dodd Spring, Ubehebe Mining District, Cottonwood Mountains, Panamint Range (Panamint Mountains), Inyo County, California, USA
35.4km (22.0 miles) ⓘUnnamed lava flow [1], Sugarloaf Mountain, Inyo County, California, USA
35.4km (22.0 miles) ⓘObsidian Ridge (Little Lake Perlite deposits; Desert Materials Corp. deposit), Sugarloaf Mountain, Inyo County, California, USA
References
Knopf, Adolf (1914a), The Darwin silver-lead mining district, California: USGS Bulletin 580: 1-18.
 
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