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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Sericite from
Donkey Mine, Ingot, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA


Locality type:Mine
Classification
Species:Muscovite var: Sericite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sericite 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:565887
Long-form Identifier:1:3:565887:9
GUID (UUID V4):0
Nearest other occurrences of Sericite
2.5km (1.5 miles) ⓘAfterthought Mine, Ingot, East Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
32.9km (20.5 miles) ⓘGolinsky Mine (Little Backbone Mine; Backbone Mine; Golinski Mine), Mammoth Butte, Backbone District, West 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
34.9km (21.7 miles) ⓘSutro Mine, Bohemotash Mountain, Backbone District, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USA
37.2km (23.1 miles) ⓘShasta King Mine (Lost Desert Mine; Trinity Mine), Mammoth Butte, Backbone District, West Shasta Copper - Zinc Mining District, Klamath Mountains, 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
37.9km (23.5 miles) ⓘKeystone 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
98.8km (61.4 miles) ⓘWilson-Sylvester claim (Black Diamond Calso group), Red Mountain, Upper Hayfork Creek area, Klamath Mountains, Trinity County, California, USA
References
Econ Geol (1988) 83:588-605
 
and/or  
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