  Glauberite.
Description from the source:
Glauberite (Na2 Ca (SO4)2 mon.), Camp Verde District, Yavapai Co., Arizona, USA. Classic crystal cluster, usually alterated in Gips. 3,7x2,5x2 cm; 5 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 30 October, 2008
Text Updated: 31 October, 2008
Price: Trade
Size: 1.5"
Composition: Na2Ca(SO4)2
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