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Grossular

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MGR504107

Grossular

Classic Locality

Description Tabs

Description
Locality: 
Jeffrey Mine, Val-des-Sources, Estrie, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.6 × 2.6 × 3.9 cm
Description

All crystals are very lustrous, sharp terminated and show excellent clarity. The color is intense and typically for this famous locality. The groups of crystals are well arranged and show fine contrast to matrix. The largest crystal is about 1cm across. Overall the specimen is on very high quality. Undamaged, accept the edges of the specimen were extracted from the rock.

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