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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Melanterite from
Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA


Locality type:Mine
Classification
Species:Melanterite
Formula:Fe2+(H2O)6(SO4) · H2O
Comments:As an alteration product of an unknown sulfide
Thick surface incrustation on hornblende
Habit:cursts and coatings
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Melanterite 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:102002
Long-form Identifier:1:3:102002:1
GUID (UUID V4):0
Nearest other occurrences of Melanterite
23.6km (14.6 miles) ⓘSky Ridge railroad cut, Hawleyville, Newtown, Fairfield County, Connecticut, USA
25.0km (15.5 miles) ⓘState Route 57 zeolite occurrence (Georgetown locality; Connerie's store), Redding, Fairfield County, Connecticut, USA
27.6km (17.1 miles) ⓘPhilips Mine (Philips Pyrite Mine; Anthony's Nose Pyrrhotite Mine), Town of Philipstown, Putnam County, New York, USA
30.5km (18.9 miles) ⓘRoxbury Iron Mine, Mine Hill, Roxbury, Litchfield County, Connecticut, USA
36.9km (22.9 miles) ⓘOld Mine Plaza construction site, Long Hill, Trumbull, Fairfield County, Connecticut, USA
37.3km (23.1 miles) ⓘOld Mine Park (Old Tungsten Mine), Long Hill, Trumbull, Fairfield County, Connecticut, USA
56.4km (35.0 miles) ⓘRed-Back Mine (Redback mine), Town of Tuxedo, Orange County, New York, USA
57.3km (35.6 miles) ⓘThomaston Dam railroad cut, Thomaston Dam, Thomaston, Litchfield County, Connecticut, USA
72.1km (44.8 miles) ⓘPfizer Company Marble Quarry, Canaan, North Canaan, Litchfield County, Connecticut, USA
89.7km (55.7 miles) ⓘStrickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
References
Januzzi, 1989
Nightingale 2001
Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA.
 
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