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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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Carlfrancisit

A synonym of Carlfrancisite
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Formula:
Mn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42
German name for:
This page provides mineralogical data about Carlfrancisit.


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Unique IdentifiersHide

Mindat ID:
22430 (as Carlfrancisit)
43359 (as Carlfrancisite)
Long-form identifier:
mindat:1:1:22430:5 (as Carlfrancisit)
mindat:1:1:43359:6 (as Carlfrancisite)

Internet Links for CarlfrancisitHide

References for CarlfrancisitHide

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