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
Donkey Mine, Ingot, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta 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 Donkey Mine, Ingot, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
Data Identifiers
Mindat Occurrence Record ID:565886
Long-form Identifier:1:3:565886:2
GUID (UUID V4):0
Nearest other occurrences of Calcite
2.5km (1.5 miles) ⓘAfterthought Mine, Ingot, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
33.9km (21.1 miles) ⓘMammoth Mine (Mammoth Copper Company; Anderson Mine; Mayflower Mine; Sheridan Mine; Gillispie Mine), Copper Crest group, Mammoth Butte, Backbone District, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
34.8km (21.6 miles) ⓘHumming Bird Mine, Quartz Hill, Buckeye, Quartz Hill Mining District, Shasta County, California, USA
37.4km (23.2 miles) ⓘBalaklala Mine (Windy Camp Mine), Sugarloaf Mountain [3], West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
39.0km (24.2 miles) ⓘEarly Bird Mine, Sugarloaf Mountain [3], West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
39.5km (24.6 miles) ⓘIron Mountain Mine (Number 8; Confidence; Old Mine), Iron Mountain, Iron Mountain [town], West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
44.6km (27.7 miles) ⓘMad Mule Mine (Banghart Mine; Doughart Mine), Mad Mule Mountain, French Gulch Mining District, Klamath Mountains, Shasta County, California, USA
44.6km (27.7 miles) ⓘGladstone Mine (Gladstone vein; Hazel Gold Mine Company; French Gulch Mining Company), Shirttail Peak, French Gulch Mining District, Klamath Mountains, Shasta County, California, USA
47.9km (29.8 miles) ⓘIgo (South Fork), South Fork Silver District, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
51.8km (32.2 miles) ⓘFranklin Mine (Franklin vein; Franklin and Milkmaid Mine; Milkmaid Mine), French Gulch, French Gulch Mining District, Klamath Mountains, Shasta County, California, USA
References
Econ Geol (1988) 83:588-605
 
and/or  
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