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Mineralpedia Details for Bustamite

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Bustamite

Bustamite

Named after General Anastasio Bustamente of Mexico. The type material of this mineral was found at the Tetela de Ocampo in Hidalgo, Mexico, later turned out to be a mixture, hence the official type locality is now at the Franklin mine in New Jersey, USA. Additional localities for Bustamite are in Sweden, England, Scotland, Romania, Italy, South Africa, Australia, and Japan, among a few others. It occurs in manganese ore that in turn formed by the metamorphism of manganese-bearing sediments, and is usually associated with skarn. The mineral’s common pink color will fade under exposure to light.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bustamite.pdf

Formula
CaMn2+Si2O6 
Crystal System
Triclinic 
Cleavage
Perfect, Good, Good 
Luster
Vitreous (Glassy) 
Color
brown red, light pink, pink 
Streak
white 
Class
Triclinic - Pinacoidal 
Hardness
5.5-6.5 
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Bustamite from Broken Hill, New South Wales, Australia

Bustamite
            from Broken Hill, New South Wales, Australia

Deep rich pink colored Bustamite crystals in aggregate.

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Bustamite from Consolidated Zinc mine, Broken Hill, New South Wales, Australia

Bustamite
            from Consolidated Zinc mine, Broken Hill, New South Wales, Australia

Crystals of brown Bustamite to 2.5cm with Galena.

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Bustamite from North mine, Broken Hill, New South Wales, Australia

Bustamite
            from North mine, Broken Hill, New South Wales, Australia

Cleavable mass of brownish red Bustamite.

Click thumbnail images for larger view.

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