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Henmilite Calcite & Quartz

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HJZ730907

Henmilite Calcite & Quartz

Rare Mineral

Description Tabs

Description
Locality: 
Fuka Mine, Bitchu-cho, Takahashi, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6 × 3 cm
Description

In march 2003 these rare blue borate crystals were found in Japan The mine is no more accesable since then so this piece come only on the market when recycled This is a big piece sprinkled with numerous blue Henmilite crystals on contrasting calcite matrix, which is much rarer then the white Olshanskyite matrix

Mineral Data
What's on the rock

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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