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What types of mica are associated with your current dravite tourmaline, Muscovite, Illite, sericite, biotite or others?

April 26, 2017associated biotite dravite illite mica muscovite Tourmaline types

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What types of mica are associated with your current dravite tourmaline, Muscovite, Illite, sericite, biotite or others?

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Generally, the dravite tourmaline (black) with highest magnesium is associated with sericite. Our current brown tourmaline is mainly existed with granitic and accompanied with muscovite.