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Magnetite & Microcline

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Magnetite & Microcline

Description Tabs

Description
Locality: 
Cerro Huañaquino, Potosi Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
2.9 × 4.6 × 1.3 cm
Largest Crystal: 
0.60cm
Weight: 
14.00gr
Description

These lustrous sharp magnetites appeared on mineral market about 15 years ago. Without exception all magnetite crystals from this locality are octahedra. I searched all specimens for twins but I never found one in this material. The magnetite crystals are associated with feldspars.

Mineral Data
What's on the rock

Magnetite

Formula: 
Fe2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Black

Microcline

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Triclinic - Pinacoidal
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Arendal, Aust-Agder, Norway

Seller Information

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