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Pentahydroborite & Frolovite

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SHS63412

Pentahydroborite & Frolovite

Description Tabs

Description
Locality: 
Fuka Mine, Bitchu-cho, Takahashi, Honshu Island, Japan
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 3.2 × 1.7 cm
Description

Light brown colured pentahydroborite in white frolovite matrix

Mineral Data
What's on the rock

Pentahydroborite

Formula: 
CaB2O(OH)6·2H2O
Strunz: 
6.BB.10
Hardness: 
2.5
Type Locality: 
Novofrolovskoye B-Cu deposit, Turjinsk, Turya river, Krasnoturjinsk (Bogolovsk; Krasnotur'insk; Krasnoturyinsk), Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...

Frolovite

Formula: 
Ca[B(OH)4]2
Strunz: 
6.AC.20
Hardness: 
3.5
Type Locality: 
Novofrolovskoye B-Cu deposit, Turjinsk, Turya river, Krasnoturjinsk (Bogolovsk; Krasnotur'insk; Krasnoturyinsk), Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...