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Manganocummingtonite


Manganocummingtonite : [ ][Mn2+2][Mg5][(OH)2|Si8O22]

Photo Copyright © Roberto Bracco  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Scerscen Valley, Malenco Valley, Sondrio Province, Lombardy, Italy
Yellow manganocummingtonite (ex "tirodite", now maybe "parvowinchite") in manganese quartzite. Etched specimen. Field width 4mm. Collection and photo R. Bracco.

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