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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Geffroyita

A synonym of Geffroyite
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Spanish synonym of:
This page provides mineralogical data about Geffroyita.


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Unique IdentifiersHide

Mindat ID:
14470 (as Geffroyita)
1667 (as Geffroyite)
Long-form identifier:
mindat:1:1:14470:8 (as Geffroyita)
mindat:1:1:1667:0 (as Geffroyite)

Similar NamesHide

JeffreyiteA valid IMA mineral species(Ca,Na)2(Be,Al)(Si2O7,HSi2O7)

Internet Links for GeffroyitaHide

References for GeffroyitaHide

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