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Montesommaite

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FRE130422

Montesommaite

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Description
Locality: 
Pollena Quarries, Naples Province, Campania, Italy
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 4 × 2 cm
Description

Bipyramidal colorless crystals up to about 0.5 mm of montesommaite in a hole of lava. Other holes contain "chabazite", "phillipsite" and calcite. Type locality.

Mineral Data
What's on the rock

Montesommaite

Formula: 
(K,Na)9Al9Si23O64·10H2O
Strunz: 
9.GB.30
Hardness: 
0.0
Type Locality: 
Pollena quarries, Pollena - Trocchia area, Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy

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