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Aegirine

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RGR748604

Aegirine

Description Tabs

Description
Locality: 
Magnet Cove, Hot Spring County, Arkansas, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 2 cm
Description

This is a small, but attractive specimen featuring black crystals of Aegirine (acmite) in a matrix of white albite, feldspar, from the Magnet Cove area. The crystals are about 1.5 cm long, and the overall size of the specimen is 4 x 3 x 2 cm.

Mineral Data
What's on the rock

Aegirine

Formula: 
NaFe3+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.25
Crystal System: 
Monoclinic
Hardness: 
6.0
Type Locality: 
Rundemyr, Øvre Eiker, Buskerud, Norway