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Trembathite

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ESM552819

Trembathite

Description Tabs

Description
Locality: 
Boulby Mine, Loftus, North Yorkshire, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2.6 × 1.1 cm
Description

Dark brown trembathite crystals on matrix

Mineral Data
What's on the rock

Trembathite

Formula: 
(Mg,Fe)3(B7O13)Cl
Strunz: 
6.GA.10
Crystal System: 
Trigonal
Hardness: 
6.0 - 8.0
Type Locality: 
Clover Hill deposit (Denison-Potacan mine; Potacan mine; Cassidy Potash mine), Salt Springs evaporite deposit, Hammond Parish, Kings Co., New Brunswick, Canada