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Hydroboracite & Colemanite

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BCK639072

Hydroboracite & Colemanite

Rare Mineral

Description Tabs

Description
Locality: 
Eagle Borax Spring, Death Valley, Inyo County, California, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 1.1 × 1.1 cm
Description

You are bidding on a perfect, beautiful star-like cluster of bladed hydroboracite crystals carefully mounted on a cork. The cluster is 100% complete and free of damage. A single crystal of colemanite lies at the base of the cluster. Really aesthetic specimen collected and carefully prepared by Milton Speckels and given to Fred Devito. 

Mineral Data
What's on the rock

Hydroboracite

Formula: 
CaMg[B3O4(OH)3]2·3H2O
Strunz: 
6.CB.15
Hardness: 
2.0
Type Locality: 
Inder B deposit and salt dome, Atyrau (Gur'yev), Atyrau Province (Atyrau Oblysy; Atyrau Oblast'), Kazakhstan...

Colemanite

Formula: 
Ca[B3O4(OH)3]·H2O
Strunz: 
6.CB.10
Hardness: 
4.5
Type Locality: 
Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan area), Inyo Co., California, USA

Seller Information

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