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Staurolite : (Fe2+,Mg,Zn)1.5-2Al9(SiO4)4O6(OH,O)2

 
 
minID: H5U-VHH

Staurolite : (Fe2+,Mg,Zn)1.5-2Al9(SiO4)4O6(OH,O)2

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Staurolite crystal is 3.9 cm long. Collected August 2001.

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Photo added: 17th Aug 2011