Also studied in this paper is a zoned structure of retrograde mica, which consists of an inner zone of paragonite, an intermediate zone of muscovite_margarite intergrowths and an outer zone of biotite.

 
  • 退變質(zhì)云母具環(huán)帶結構 ,其內帶為鈉云母 ,中帶為白云母和珍珠云母的交生體 ,外帶為黑云母
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