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Schorl


Schorl : [Na][Fe2+3][Al6][(OH)3|OH|(BO3)3|Si6O18]

Photo Copyright © 2006 Peter Cristofono  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Rollstone Hill Quarry, Fitchburg, Worcester Co., Massachusetts, USA
11 mm black schorl crystal with flat termination. P. Cristofono specimen and photo. Field collected 2003.

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