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Pentahydroborite

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SYA594011

Pentahydroborite

ex Bertold Ottens

Description Tabs

Description
Locality: 
Shijiangshan Mine, Hexigten Banner, Chifeng City, Inner Mongolia, China (Peoples Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.3 × 2 cm
Description

A cluster of  sharp waterclear pentahydroborite crystals with minor matrix.

From the one time find March 2014 .

This find produced among the finest pentahydroborite crystals in the world.

Analyzed

Comes with the original label of Berthold Ottens.

Ref. : Article from Berthold Ottens in Lapis Jg.39 Nr. 7/8 - 2014 page 66 - 68. A copy of the article (german) can be given to the buyer.

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...

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