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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Derbyshire Spar

A synonym of Fluorite
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Formula:
CaF2
Synonym:
A synonym of Fluorite
A local name applied by miners in England.


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Unique IdentifiersHide

Mindat ID:
11581 (as Derbyshire Spar)
1576 (as Fluorite)
Long-form identifier:
mindat:1:1:11581:2 (as Derbyshire Spar)
mindat:1:1:1576:5 (as Fluorite)

Internet Links for Derbyshire SparHide

References for Derbyshire SparHide

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