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Spinel

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GFM616284

Spinel

Rare Mineral

Description Tabs

Description
Locality: 
Bredsjönäs Mines, Åker, Strängnäs, Södermanland County, Sweden
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3 × 5 × 2.8 cm
Largest Crystal: 
0.80cm
Description

blue glassy bi-pyramidal crystals up to 8 mm, together with pale-greenish-brown tremolite and phlogopite on white calcite matrix. Old time specimens collect around 1900;

Mineral Data
What's on the rock

Spinel

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