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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Kalvonigrit

A synonym of Romanèchite
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Formula:
(Ba,H2O)2(Mn4+,Mn3+)5O10
German synonym of:
This page provides mineralogical data about Kalvonigrit.


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Unique IdentifiersHide

Mindat ID:
10906 (as Kalvonigrit)
3441 (as Romanèchite)
Long-form identifier:
mindat:1:1:10906:0 (as Kalvonigrit)
mindat:1:1:3441:4 (as Romanèchite)

Internet Links for KalvonigritHide

References for KalvonigritHide

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