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Augite

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MCH199935

Augite

Description Tabs

Description
Locality: 
Skarvbergbukten Pegmatite, Seiland Island, Alta, Troms og Finnmark, Norway
Size Range: 
Cabinet (10-18 cm)
Size: 
10.9 × 9.8 × 6.2 cm
Largest Crystal: 
2.50cm
Description

A specimen with several dozens of black, high lustrous, often well terminated augite crystals on a matrix of black pyroxenite rock from the geological unit of the Seiland province of Northern Norway that is build up of mainly ultramafic and mafic rocks and by mineral collectors known for the unique occurences of spectacular zircon specimens.

Mineral Data
What's on the rock

Augite

Formula: 
(Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
Strunz: 
9.DA.15
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

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