![](http://www.alamy.com/thumbs/6/A4E2780D-DDC9-40F9-A820-E87FB809C831/M850A5.jpg)
A specimen of pyrolusite, an ore of manganese, from the Platte Mine, Dundas Mine, Tasmania
Size: 6016px × 4016px
Photo credit: © Lakeview Images / Alamy / Afripics
License: Royalty Free
Model Released: No
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