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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Amethyst from
Vose Spur Slide locality, Lincoln, Grafton County, New Hampshire, USA


Classification
Species:Quartz var: Amethyst
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Amethyst data
Locality Data:Click here to view Vose Spur Slide locality, Lincoln, Grafton County, New Hampshire, USA
Data Identifiers
Mindat Occurrence Record ID:53727
Long-form Identifier:1:3:53727:6
GUID (UUID V4):0
References
 
and/or  
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