Image: Psilomelane-167850

Psilomelane-167850.jpg(600 × 539 pixels, file size: 106 KB, MIME type: image/jpeg)

Description: Psilomelane Locality: Iron Chief and Ferro Group (Iron Chief; Argus Range), Inyo County, California, USA (Locality at mindat.org) Size: 6.7 x 5.8 x 5.1 cm. From the noted California collection of Charles Hansen - a specimen of the weird-looking manganese oxide psilomelane, looking more biological than mineralogical! U.S. specimens are uncommon on the market. Old California material, and a pretty good one!
Title: Psilomelane-167850
Credit: http://www.mindat.org/photo-167850.html
Author: Rob Lavinsky / iRocks.com
Usage Terms: Creative Commons Attribution-Share Alike 3.0
License: CC BY-SA 3.0
License Link: http://creativecommons.org/licenses/by-sa/3.0
Attribution Required?: Yes

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