Mica sheet | |||
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| Mica sheet.  This is a sheet of mica, a papery thin mineral that was often used as an electrical insulator. The term mica refers to a range of specific minerals and I don't know which one this is exactly, so the composition is just a guess. Source: Mark Peterson Contributor: Mark Peterson Acquired: 13 January, 2010 Text Updated: 13 January, 2010 Price: Donated Size: 3" Composition: (KLi2Al(Al,Si)3O10(F,OH)2  | |||
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