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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Feuerstein

A synonym of 'Flint'
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German synonym of:
Literally 'fire stone', for its ability to produce sparks when hitting it with another flint or hard rock.


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Unique IdentifiersHide

Mindat ID:
26802 (as Feuerstein)
6676 (as Flint)
Long-form identifier:
mindat:1:1:26802:6 (as Feuerstein)
mindat:1:1:6676:7 (as Flint)

Internet Links for FeuersteinHide

References for FeuersteinHide

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