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Montmorillonite


Montmorillonite : (Na,Ca)0.33(Al,Mg)2Si4O10(OH)2·nH2O

Photo Copyright © 2004 Peter Cristofono  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Tamminen Quarry, Greenwood, Oxford Co., Maine, USA
Specimen is 3 cm long. (P. Cristofono specimen & photo. Field collected 2004.)

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