| lepidomelane | <chemical> An iron-potash mica, of a raven-black colour, usually found in granitic rocks in small six-sided tables, or as an aggregation of minute opaque scales. See Mica. Origin: Fr, a scale +, black. Source: Websters Dictionary (01 Mar 1998) |
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| lepidomelane | a mica that is a biotite containing iron |
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