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Grossular

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CLB88035

Grossular

Description Tabs

Description
Locality: 
Diakon Commune, Cercle de Bafoulabé, Kayes Region, Mali
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 3.5 × 3.1 cm
Largest Crystal: 
4.70cm
Description

Lustrous green grossular garnet crystal. Possibly gem quality inside.

Very unusual and rare green colour. Surely with a high chromium content.

This is almost a demantoid - respectively topazolite, but there is no significant publication about that to date - as far as I know.

Some natural erosion marks.

Mineral Data
What's on the rock

Grossular

Formula: 
Ca3Al2(SiO4)3
Strunz: 
9.AD.25
Hardness: 
6.5 - 7.0
Type Locality: 
Akhtaragda River mouth (Achtaragda River mouth), Vilyui River Basin (Vilui River Basin; Wilui River Basin), Sakha Republic (Saha Republic; Yakutia), Eastern-Siberian Region, Russia

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