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Augite

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MGR1037756

Augite

Description Tabs

Description
Locality: 
Mount Ivohitra, Antsirabe I, Vakinankaratra, Madagascar
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.3 × 1.9 cm
Description

Well developed single crystal of augite from Madagascar. The dark crystal has lustrous faces all around and sharp edges.

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