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
St. Louis Mine (Morning Star Mine; Isabel), St. Louis Gulch, Hughes Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, 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 St. Louis Mine (Morning Star Mine; Isabel), St. Louis Gulch, Hughes Gulch, Greaterville placer deposits, Greaterville, Greaterville Mining District, Pima County, Arizona, USA
Data Identifiers
Mindat Occurrence Record ID:536747
Long-form Identifier:1:3:536747:4
GUID (UUID V4):0
Nearest other occurrences of Sericite
4.8km (3.0 miles) ⓘOld Baldy prospects, Littleshot Camp, Madera Canyon, Old Baldy Mining District, Santa Cruz County, Arizona, USA
10.8km (6.7 miles) ⓘOmega Mine, Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
15.9km (9.9 miles) ⓘEureka Mine (Eureka claim), Elephant Head group of claims (Tremaine-Daniels group), Mount Hopkins, Tyndall Mining District, Santa Cruz County, Arizona, USA
16.1km (10.0 miles) ⓘElephant Head group of claims (Tremaine-Daniels group), Tyndall Mining District, Santa Cruz County, Arizona, USA
18.5km (11.5 miles) ⓘJersey Girl Mine (Jersey Girl prospect), Toluachi group of claims (Toluachi group; Bonanza tunnel; Tennantite claim), Salero area, Tyndall Mining District, Santa Cruz County, Arizona, USA
19.5km (12.1 miles) ⓘDimple Mine group, Mount Fagan, Helvetia-Rosemont Mining District, Pima County, Arizona, USA
22.2km (13.8 miles) ⓘIvanhoe Mine (Commercial Tunnel and Shaft; Ivanhoe 1-8 claims; Commercial 1-6 claims), Squaw Gulch area, Tyndall Mining District, Santa Cruz County, Arizona, USA
27.7km (17.2 miles) ⓘAztec Mine (Aztec group of claims; Aztec Mine group; Andes group), Aztec Gulch, Alum Gulch, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
28.7km (17.9 miles) ⓘRed Mountain Mine (Red Mountain Copper prospect; Gem Mine; Carlton property; Ten Grand Mine; Red Mountain project), Red Mountain, Patagonia Mountains, Santa Cruz County, Arizona, USA
29.7km (18.4 miles) ⓘBlue Eagle Mine (Blue Eagle 1 and 2 claims; Copper Ledge; Hillside Copper Mine), Blue Eagle and Exposed Reef group, Alum Gulch, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
References
MRDS database Dep. ID file #10039494, MRDS ID #M050166.
Stewart, J.C. (1971) Geology of the Morningstar Mine area, Greaterville Mining district, Pima County, Arizona: Tucson, University of Arizona, M.S. thesis, 79 p.
 
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