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Staurolite


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

Photo Copyright © 2005 Peter Cristofono  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Wissahickon Valley, Philadelphia, Philadelphia Co., Pennsylvania, USA
16 mm red-brown crystal in schist. (P. Cristofono specimen and photo.)

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