  Rhodochrosite.  
Description from the source: 
Rhodochrosite (Mn+2 CO3 trig.), Pachapaqui, Ancash, Peru. Nice pink crystal clusters. 4x4x2 cm; 40 g. 
Source: Simone Citon 
Contributor: John Gray 
Acquired: 30 September, 2008 
Text Updated: 1 October, 2008 
Price: Trade 
Size: 1.6" 
Composition: MnCO3
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