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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Fayalite-Forsterite Series from
Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA


Locality type:Mine
Classification
Species:'Fayalite-Forsterite Series' (not an IMA approved species)
Comments:Reported as abundant although commonly altered to serpentine
Quality for species:Poor for species, only of interest for locality collectors. (#)
Abundance at site:Common
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Fayalite-Forsterite Series data
Locality Data:Click here to view Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:100227
Long-form Identifier:1:3:100227:0
GUID (UUID V4):0
Nearest other occurrences of Fayalite-Forsterite Series
10.1km (6.2 miles) Mahopac Mines, Town of Carmel, Putnam County, New York, USA
15.0km (9.3 miles) Oil Mill Pond, Danbury, Fairfield County, Connecticut, USA
34.6km (21.5 miles) Weston meteorite (incl Easton; Trumbull; Fairfield), Easton (Weston), Fairfield County, Connecticut, USA
47.4km (29.5 miles) O'Neil Mine, Lake Mombasha, Town of Monroe, Orange County, New York, USA
48.6km (30.2 miles) Stratford meteorite, Stratford, Fairfield County, Connecticut, USA
56.4km (35.0 miles) Red-Back Mine (Redback mine), Town of Tuxedo, Orange County, New York, USA
67.5km (42.0 miles) Serpentinite, Norfolk, Litchfield County, Connecticut, USA
88.0km (54.7 miles) Wethersfield (1971) meteorite, Wethersfield, Hartford County, Connecticut, USA
95.9km (59.6 miles) Ultramafic rock bodies, Haddam, Middlesex County, Connecticut, USA
98.3km (61.1 miles) Linkpot cut, Airline Railroad, East Hampton, Middlesex County, Connecticut, USA
References
 
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