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Spinel Var Pleonaste & Phlogopite

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CLB533934

Spinel Var Pleonaste & Phlogopite

ex collection Dr. Krassmann
Classic Locality

Description Tabs

Description
Locality: 
Amboasary Sud, Anosy, Madagascar
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 2.2 cm
Description

Jet black pleonast crystals with phlogopite on matrix. The black spinel variety is all over the specimen.

Mineral Data
What's on the rock

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0

Pleonaste

Variety Of: 

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Hardness: 
7.5 - 8.0
Hardness: 
0.0

Phlogopite

Formula: 
KMg3(AlSi3O10)(OH,F)2
Strunz: 
9.EC.20
Crystal System: 
Monoclinic - Prismatic
Hardness: 
2.0 - 3.0
Streak: 
White

Seller Information

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