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Grossular & Prehnite

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CFL701564

Grossular & Prehnite

Description Tabs

Description
Locality: 
Jeffrey Mine, Val-des-Sources, Estrie, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 5 × 2 cm
Weight: 
130.00gr
Description

Nice specimen of colorless and hessonite variety grossular crystals on matrix, associated with small prehnite crystals partially to totally coated with thin layer of oxide.  Microscopic pale green to dark green (almost black) spherules of unidentified mineral species are scattered among the grossular crystals.  Notice the pale fluorescence of the peripheral colorless grossular crystals.

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

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

Seller Information

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