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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Gesso

A synonym of Gypsum
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Formula:
CaSO4 · 2H2O
Italian and Portuguese name for:
This page provides mineralogical data about Gesso.


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Unique IdentifiersHide

Mindat ID:
9380 (as Gesso)
1784 (as Gypsum)
Long-form identifier:
mindat:1:1:9380:0 (as Gesso)
mindat:1:1:1784:4 (as Gypsum)

Internet Links for GessoHide

References for GessoHide

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