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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Cross-stone

A synonym of 'Chiastolite'
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Formula:
Al2(SiO4)O
Synonym:
A synonym of Chiastolite
May apply to andalusite; staurolite; chiastolite; harmotome.


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Unique IdentifiersHide

Mindat ID:
4978 (as Cross-stone)
1001 (as Chiastolite)
217 (as Andalusite)
Long-form identifier:
mindat:1:1:4978:4 (as Cross-stone)
mindat:1:1:1001:2 (as Chiastolite)
mindat:1:1:217:4 (as Andalusite)

Internet Links for Cross-stoneHide

References for Cross-stoneHide

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