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3D3DManganese oxides in quartz.
Description from the source:
Mn oxides included in Quartz. Minas Gerais, Brazil. 6x2,5x2,5 cm; 40 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 26 October, 2008
Text Updated: 26 October, 2008
Price: Trade
Size: 2.4"
Composition: MnO2+SiO2
Manganese