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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Spessartine from
Ore Hill Mine, Warren, Grafton County, New Hampshire, USA


Locality type:Mine
Classification
Species:Spessartine
Formula:Mn32+Al2(SiO4)3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Spessartine data
Locality Data:Click here to view Ore Hill Mine, Warren, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:682103
Long-form Identifier:1:3:682103:6
GUID (UUID V4):0
References
April 1986
v. 81
no. 2
p. 371-387)
Secord, Theresa K., Brown, Philip E. (1986) Geology and geochemistry of the Ore Hill Zn-Pb-Cu massive sulfide deposit, Warren, New Hampshire. Economic Geology, 81 (2) 371-387 doi:10.2113/gsecongeo.81.2.371
 
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