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![]() Date: 2011-11-16 09:03:56Volcanology Volcanic rocks Lamprophyre Quartz monzonite Granite Monzonite Porphyry Diorite Micrographic texture Petrology Igneous petrology Igneous rocks | Source URL: pubs.usgs.govDownload Document from Source WebsiteFile Size: 3,00 MBShare Document on Facebook |