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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Annite from
Riverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Annite
Formula:KFe32+(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Annite data
Locality Data:Click here to view Riverside Quarry (Western Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:720522
Long-form Identifier:1:3:720522:4
GUID (UUID V4):0
Nearest other occurrences of Annite
0.5km (0.3 miles) ⓘWhite Rocks Quarry (Consolidated Quarry), White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
2.8km (1.8 miles) ⓘTollgate Quarry (Tollgate Mine; Bidwell Quarry; China-stone Quarry), Middletown, Middlesex County, Connecticut, USA
3.3km (2.1 miles) ⓘHale-Walker prospects, Collins Hill, Portland, Middlesex County, Connecticut, USA
3.9km (2.4 miles) ⓘGreat Hill Pond Brook pegmatite, Cobalt, East Hampton, Middlesex County, Connecticut, USA
4.0km (2.5 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
4.0km (2.5 miles) ⓘSchoonmaker Mine, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
4.4km (2.7 miles) ⓘDripps Road, Middletown, Middlesex County, Connecticut, USA
4.7km (2.9 miles) ⓘState Forest Quarry No. 2, Cobalt, East Hampton, Middlesex County, Connecticut, USA
4.9km (3.0 miles) ⓘPenfield Quarry (Oak Leaf Quarry), Portland, Middlesex County, Connecticut, USA
5.3km (3.3 miles) ⓘPelton's Quarry, Portland, Middlesex County, Connecticut, USA
References
Bastin, Edson S. (1910) Economic geology of the feldspar deposits of the United States. Bulletin 420. US Geological Survey doi:10.3133/b420
 
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