roccof Posted February 20, 2019 Share Posted February 20, 2019 My son got this rock as a gift for his collection and we can't figure out what it is. We've been researching for months and still have no idea. Does anyone know? It has very thin layers that are pearly. Quote Link to comment Share on other sites More sharing options...
clay Posted February 20, 2019 Share Posted February 20, 2019 It's Mica. A fairly common silicate that takes many forms. 1 Quote Link to comment Share on other sites More sharing options...
Au Seeker Posted February 20, 2019 Share Posted February 20, 2019 Possibly Muscovite. 2 Quote Link to comment Share on other sites More sharing options...
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