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Nagashimalite

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SMM657558

Nagashimalite

Type Locality
Rare Mineral

Description Tabs

Description
Locality: 
Mogurazawa Mine, Kiryuu City, Gunma Prefecture, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1 × 1.5 cm
Description

Dark green crystals of the extremely rare nagashimalite on rhodonite matrix, from type locality.

Boxed with Label
Mineral Data
What's on the rock

Nagashimalite

Formula: 
Ba4(V,Ti)4B2Si8O27(O,OH)2Cl
Strunz: 
9.CE.20
Crystal System: 
Orthorhombic
Hardness: 
6.0
Streak: 
green
Type Locality: 
Mogurazawa mine, Kiryuu City, Gunma Prefecture, Kanto Region, Honshu Island, Japan

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