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
Forest of Dean Mine, Fort Montgomery, Town of Highlands, Orange County, New York, 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 Forest of Dean Mine, Fort Montgomery, Town of Highlands, Orange County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:83106
Long-form Identifier:1:3:83106:6
GUID (UUID V4):0
Nearest other occurrences of Sericite
40.7km (25.3 miles) ⓘTuckahoe and Patterson Marble Company Quarry, Town of Patterson, Putnam County, New York, USA
51.6km (32.0 miles) ⓘSussex nepheline-syenite sill, Libertyville, Wantage Township, Sussex County, New Jersey, USA
55.1km (34.3 miles) ⓘU. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA
69.2km (43.0 miles) ⓘScrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA
72.9km (45.3 miles) ⓘNorth Jersey Stone Co. Quarry, Cranberry Lake, Byram Township, Sussex County, New Jersey, USA
89.9km (55.8 miles) ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA
References
Clarke, John M. (1921, September) The Magnetite Iron Deposits of Southeastern New York. New York State Museum Bulletin Vol. 249-250. The University of the State of New YorkIndex Map, 103.
 
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