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Description: | Psilomelane is a black to grey sub-metallic mineral. It is an important ore of manganese, and is mined in India, Brazil, Ghana and Arkansas, USA. The black dendritic markings on this piece of rock, which look a bit like fossilised plants, are formed from manganese oxide minerals, of which psilomelane is one. This specimen is from Dry Gill Mine in the Caldbeck Fells, Cumbria. | License: | http://www.imagine.org.uk/about/copyright/ | Rights holder: | Tyne & Wear Museums | Subjects: | rocks and minerals natural world | Source: | Tyne and Wear Imagine | Identifier: | http://www.imagine.org.uk/details/index.... | Go to resource |
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