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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Phonolitic tephrite

A rock subtype
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A tephrite close to the compositional border with phonolite.


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Unique IdentifiersHide

Mindat ID:
54598
Long-form identifier:
mindat:1:1:54598:9

Similar NamesHide

Phonolitic-tephriteA rock classification type

Classification of Phonolitic tephriteHide

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