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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Antigorite from
Premier Asbestos Mine, Jamestown, Jamestown District, Tuolumne County, California, USA


Locality type:Mine
Classification
Species:Antigorite
Formula:Mg3(Si2O5)(OH)4
Comments:Occurs as a belt ½ mile (0.8 km) wide and ¾ mile (1.2 km) long.
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Chrysotile
Data
Mineral Data:Click here to view Antigorite data
Locality Data:Click here to view Premier Asbestos Mine, Jamestown, Jamestown District, Tuolumne County, California, USA
Data Identifiers
Mindat Occurrence Record ID:646136
Long-form Identifier:1:3:646136:2
GUID (UUID V4):0
Nearest other occurrences of Antigorite
3.8km (2.4 miles) ⓘMackey Mine, Stent, Jamestown District, Tuolumne County, California, USA
8.8km (5.5 miles) ⓘCarson Hill, Carson Hill Mining District (Melones Mining District), Calaveras County, California, USA
20.4km (12.7 miles) ⓘPonderosa prospect, Soapstone Hill, Murphys, Murphys Mining District (Esmeralda Mining District; Sperry Mining District), East Belt, Calaveras County, California, USA
20.4km (12.7 miles) ⓘUnknown Cr prospect [11], Soapstone Hill, Murphys, Murphys Mining District (Esmeralda Mining District; Sperry Mining District), East Belt, Calaveras County, California, USA
32.2km (20.0 miles) ⓘFord Mine (Apex Mine), San Andreas, San Andreas Mining District, Calaveras County, California, USA
84.6km (52.6 miles) ⓘDel Puerto Canyon (Arroyo del Puerto), Copper Mountain, Black Wonder Mining District, Stanislaus County, California, USA
References
Wiebelt, F.J. and Smith M.C. (1959) A reconnaissance of asbestos deposits of the serpentine belt of northern California. U.S. Bureau of Mines Report of Investigation 7860, 52 pp.: 49-50
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc.
 
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