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Obsidian, Spessartine


Obsidian, Spessartine : Mn2+3Al2[SiO4]3

Photo Copyright © Alfredo Petrov  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Miraflores Formation, Potosí Department, Bolivia
Gemmy transparent volcanic glass with microcrystal inclusions of orange spessartine. Backlit. Approx 5cm specimen, found in 1998.

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