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PP 843-A plate 2 - USGS · PROFESSIONAL PAPER 843-A PLATE 2 Silicified dacite Mineral assemblage: quartz±alunite±kaolinite Illite- kaolinite subzone Mineral assemblage: jarosite

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Page 1: PP 843-A plate 2 - USGS · PROFESSIONAL PAPER 843-A PLATE 2 Silicified dacite Mineral assemblage: quartz±alunite±kaolinite Illite- kaolinite subzone Mineral assemblage: jarosite