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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Pozzolana

A rock subtype
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Name:
The name pozzolana is derived from one of the primary deposits of volcanic ash used by the Romans, at Pozzuoli, in Italy.
Pozzolana are naturally occurring pozzolans of volcanic origin, being silica and alumina rich, vitic volcanic ash or vitric tuffs.



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Unique IdentifiersHide

Mindat ID:
52535
Long-form identifier:
mindat:1:1:52535:6

Classification of PozzolanaHide

Internet Links for PozzolanaHide

References for PozzolanaHide

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