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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Corundum-alpha

A synonym of Corundum
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Formula:
Al2O3
Synonym:
A synonym of Corundum
This page provides mineralogical data about Corundum-alpha.


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Unique IdentifiersHide

Mindat ID:
10769 (as Corundum-alpha)
1136 (as Corundum)
Long-form identifier:
mindat:1:1:10769:1 (as Corundum-alpha)
mindat:1:1:1136:1 (as Corundum)

Internet Links for Corundum-alphaHide

References for Corundum-alphaHide

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