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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Gel-Cristobalite

A synonym of Opal
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Synonym:
A synonym of Opal
This page provides mineralogical data about Gel-Cristobalite.


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Unique IdentifiersHide

Mindat ID:
5986 (as Gel-Cristobalite)
3004 (as Opal)
Long-form identifier:
mindat:1:1:5986:8 (as Gel-Cristobalite)
mindat:1:1:3004:1 (as Opal)

Internet Links for Gel-CristobaliteHide

References for Gel-CristobaliteHide

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