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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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Calc-schist

A rock subtype
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An obsolete term for a metamorphosed argillaceous limestone containing calcite as a substantial component and with a schistose structure produced by parallelism of platy minerals.

The term carbonate-silicate schist should be used in preference if the non-carbonate mineral content is more than 50 vol.% and the term schistose impure marble should be used otherwise.


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Unique IdentifiersHide

Mindat ID:
50104
Long-form identifier:
mindat:1:1:50104:6

Similar NamesHide

Talc schistA rock subtype

Classification of Calc-schistHide

Other Language Names for Calc-schistHide

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Calc-schist associated with Axinite-(Fe)Ca2Fe2+Al2BSi4O15OH

Internet Links for Calc-schistHide

References for Calc-schistHide

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