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Høgtuvaite

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GFM1058358

Høgtuvaite

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Description Tabs

Description
Locality: 
Bordvedåga, Høgtuva, Rana, Nordland, Norway
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 5 × 2.5 cm
Description

This very rare Beryllium silicate, known worldwide only from one locality, forms black, long-prismatic crystals of 2 cm in size in an exceptional type of rock matrix, made of Phenakite, Microcline, Biotite and Quartz.

Mineral Data
What's on the rock

Høgtuvaite

Formula: 
(Ca,Na)2(Fe2+,Fe3+,Ti)6[O2|Be(Si,Al)5O18]
Strunz: 
9.DH.40
Crystal System: 
Triclinic
Hardness: 
5.5
Colour: 
Black
Type Locality: 
Høgtuva Beryllium deposit, Rana, Nordland, Norway