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3D3DStaurolite.
Description from the source:
Staurolite ((Fe+2 Mg Zn)2 Al9 (Si Al)4 O22 (OH)2 mon.), Minas Gerais, Brazil. Single crystal. 1,8x1,5x1,2 cm; 5 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 30 September, 2008
Text Updated: 1 October, 2008
Price: Trade
Size: 0.7"
Composition: (FeMgZn)2Al9(SiAl)4O22(OH)2
Zinc