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Parasibirskite & Henmilite

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SKY694005

Parasibirskite & Henmilite

Type Locality

Description Tabs

Description
Locality: 
Fuka Mine, Bitchu-cho, Takahashi, Honshu Island, Japan
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.5 × 1 cm
Description

White crystal aggregates of the rare borate mineral parasibirskite from the type locality in Fuka, associated to minoritary blue henmilite also from the type locality.

It includes a label from Excalibur Mineral Company.

Two very rare borates in the same specimen !

Mineral Data
What's on the rock

Parasibirskite

Formula: 
Ca2(B2O5)·H2O
Strunz: 
6.BC.20
Crystal System: 
Monoclinic
Hardness: 
3.0
Colour: 
White
Streak: 
White
Type Locality: 
Fuka mine, Fuka, Bicchu-cho (Bitchu-cho), Takahashi City, Okayama Prefecture, Chugoku Region, 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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