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Anorthite

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ESM544108

Anorthite

Description Tabs

Description
Locality: 
Miyake Island, Miyake, Miyake Subprefecture, Tokyo Metropolis, Honshu Island, Japan
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.1 × 1.1 × 1 cm
Description

Sharp greyish anorthite crystal coated by dark lava

Mineral Data
What's on the rock

Anorthite

Formula: 
CaAl2Si2O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Monte Somma, Somma-Vesuvius Complex, Naples Province, Campania, Italy