  Ankerite.
Description from the source:
Ankerite (Ca (Fe+2 Mg Mn) (CO3)2 trig.), Laubuseschbach, Taunus, Germany. Brown crystal cluster on the same matrix. 3x2x1,8 cm; 15 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 10 January, 2009
Text Updated: 10 January, 2009
Price: Trade
Size: 1.2"
Composition: Ca(FeMgMn)(CO3)2
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