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Pyrolusite


Pyrolusite : MnO2

Photo Copyright © 2000-2001 by John H. Betts. All Rights Reserved.
This photo, and many others, have been provided by John Betts Fine Minerals - http://www.johnbetts-fineminerals.com - For more fine minerals click here.  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Pinal Co., Arizona, USA
Cluster of many intersecting lustrous black pyrolusite pseudomorphs after manganite crystals up to 14 mm long. Probably from the Magma Mine. Originally acquired in 1970. Ex. A. Stevenson collection #232. Overall size of mineral specimen: 26x18x10 mm. Size of individual crystals: 5-14 mm.

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