  Spinel.
Description from the source:
Spinel (Mg Al O4 cub.), Parker Mine, Notre Dame du Laus, Quebec, Canada. Black crystals on matrix with Forsterite. 5x4x3,5 cm; 90 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 30 September, 2008
Text Updated: 1 October, 2008
Price: Trade
Size: 2"
Composition: MgAlO4
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