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Almandine & Omphacite

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CFL710561

Almandine & Omphacite

Description Tabs

Description
Locality: 
Berkeley Hills, Berkeley, Alameda County, California, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.6 × 1.6 cm
Weight: 
20.00gr
Description

Rich specimen of lustrous almandine crystals in a matrix of omphacite wich is a clinopyroxene solid solution of jadeite, augite, and aegirine.

Mineral Data
What's on the rock

Almandine

Formula: 
Fe2+3Al2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
7.0 - 7.5
Streak: 
White
Type Locality: 
Alabanda, Aydin Province, Aegean Region, Turkey

Omphacite

Formula: 
(Ca,Na)(Mg,Al)Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.20
Hardness: 
5.0 - 6.0
Type Locality: 
Eclogite outcrops, Weißenstein, Stammbach, Münchberg Metamorphic complex, Franconia, Bavaria, Germany

Seller Information

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Collection Arkane accept payments by Paypal and direct email messages.