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Nagashimalite

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CSL120647

Nagashimalite

Type Locality

Description Tabs

Description
Locality: 
Mogurazawa Mine, Kiryuu City, Gunma Prefecture, Honshu Island, Japan
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 1.3 × 0.9 cm
Description

Very rare Ba-V-borosilicate from the Type Locality.
It occurs as dark green glassy, crystal fragments in pink rhodonite matrix. Nagashimalite has only two localities, both in Japan.

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
Loranth Minerals

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