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Augite

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MCH624921

Augite

Description Tabs

Description
Locality: 
Arendal, Agder, Norway
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.9 × 6.1 × 3.8 cm
Largest Crystal: 
2.00cm
Weight: 
320.00gr
Description

An almost black specimen consisting of numerous small augite crystals as well as a zone with some larger, good developped crystals. Old time specimen with high probability from the old Arendal Iron Mines.

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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