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Chiyokoite & Henmilite

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HEF889767

Chiyokoite & Henmilite

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Description
Locality: 
Fuka Mine, Bitchu-cho, Takahashi, Honshu Island, Japan
Class: 
Massive/Crystalline
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.9 × 0.5 cm
Description

Pale brown crystals of chiyokoite with violet henmilite on matrix

Mineral Data
What's on the rock

Chiyokoite

Formula: 
Ca3Si(CO3){[B(OH)4]0.5(AsO3)0.5}(OH)6·12H2O
Crystal System: 
Hexagonal
Type Locality: 
Fuka Mine, Bitchu-cho, Takahashi, Honshu Island, Japan

Henmilite

Formula: 
Ca2Cu[B(OH)4]2(OH)4
Strunz: 
6.AC.30
Hardness: 
1.5 - 2.0
Type Locality: 
Fuka mine, Fuka, Bicchu-cho (Bitchu-cho), Takahashi City, Okayama Prefecture, Chugoku Region, Honshu Island, Japan

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