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


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite 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:308222
Long-form Identifier:1:3:308222:5
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
23.0km (14.3 miles) ⓘPennsylvania Mine, Sugarloaf Mountain, Black Wonder Mining District, Santa Clara County, California, USA
53.9km (33.5 miles) ⓘRianda Mine (Half Dome Mine), Pigeon Point, Santa Clara 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
56.9km (35.4 miles) ⓘGuadalupe Mine, New Almaden, New Almaden Mining District, Santa Clara County, California, USA
59.2km (36.8 miles) ⓘBRSSI & Land Management Company prospect, Mount Diablo (Mt Diablo), Clayton, Contra Costa County, California, USA
62.6km (38.9 miles) ⓘUnity claim [?], Eagle Peak, Clayton, Contra Costa County, California, USA
62.8km (39.0 miles) ⓘMitchell Canyon prospect, Eagle Peak, Clayton, Contra Costa County, California, USA
63.4km (39.4 miles) ⓘEagle Peak Au-Cu occurrence, Eagle Peak, Clayton, Contra Costa County, California, USA
63.9km (39.7 miles) ⓘHooker Creek Mine, Lexington Hills, Santa Clara County, California, USA
72.4km (45.0 miles) ⓘTelegraph Mine (Diamond J), Telegraph City, Foothill Copper Belt, Calaveras County, California, USA
References
Am Min 69:200-206
Huebner, J. Stephen
protoliths in the Franciscan Complex, California
USGS Professional Paper 1502.
Flohr, Marta J. (1990) Microbanded manganese formations
 
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