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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Masutomilite from
Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA


Locality type:Quarry
Classification
Species:Masutomilite
Formula:K(LiAlMn2+)[AlSi3O10]F2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Masutomilite data
Locality Data:Click here to view Strickland Quarry, Strickland pegmatite, Collins Hill, Portland, Middlesex County, Connecticut, USA
Data Identifiers
Mindat Occurrence Record ID:917131
Long-form Identifier:1:3:917131:2
GUID (UUID V4):0
References
Schooner, Richard. (circa 1985), Untitled manuscript on central Connecticut mineralogy.
 
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