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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Calcite from
Buckeye Mine (Buckeye Mines; Wright Mine), Mount Oso, Ladd-Buckeye Mining District, Stanislaus County, California, USA


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Buckeye Mine (Buckeye Mines; Wright Mine), Mount Oso, Ladd-Buckeye Mining District, Stanislaus County, California, USA
Data Identifiers
Mindat Occurrence Record ID:650882
Long-form Identifier:1:3:650882:1
GUID (UUID V4):0
Nearest other occurrences of Calcite
2.3km (1.4 miles) ⓘLiberty Mine (Deer Park ?), Mount Oso, Ladd-Buckeye Mining District, Stanislaus County, California, USA
13.5km (8.4 miles) ⓘAdobe Canyon group deposits (McGuire et al. deposits; McGuire Holbrook and Springer Lea; Southeast; Mountain View Mine; Mountain View claim; Gray Fox claim), Copper Mountain, Black Wonder Mining District, Stanislaus County, California, USA
19.0km (11.8 miles) ⓘCorral Hollow, Mendenhall Springs, Livermore Mining District (Tesla District), Alameda County, California, USA
23.0km (14.3 miles) ⓘPennsylvania Mine, Sugarloaf Mountain, Black Wonder Mining District, Santa Clara County, California, USA
27.3km (17.0 miles) ⓘPatterson Pass, Livermore, Livermore Mining District (Tesla District), Alameda County, California, USA
54.7km (34.0 miles) ⓘRoad West of the Pacheco Pass summit, Pacheco Pass, Santa Clara County, California, USA
55.0km (34.2 miles) ⓘNorth Randol Mine, New Almaden, New Almaden Mining District, Santa Clara County, California, USA
55.4km (34.4 miles) ⓘDelhi, Merced County, California, USA
55.4km (34.4 miles) ⓘNew Almaden Mine (New Almaden Mines), New Almaden, New Almaden Mining District, Santa Clara County, California, USA
55.9km (34.8 miles) ⓘSan Pedro-Almaden Area Mine (New Almaden - San Pedro-Almaden Area), New Almaden, New Almaden Mining District, Santa Clara County, California, USA
References
Laizure, Clyde McK (1925), San Francisco field division: California Mining Bureau. Report 21: 213
Taliaferro, Nicholas Lloyd & F.S. Hudson (1943), Genesis of the manganese deposits of the Coast Ranges of California: California Division Mines Bulletin: 239
Murdoch, Joseph; Webb, Robert Wallace (1966) Minerals of California, Centennial Volume (1866-1966) - California Division of Mines and Geology, Bulletin 189. California Division of Mines and Geology. 559 pp.
 
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