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Date: 2008-03-04 16:47:28Crystallography Pegmatite Tantalum Pyrochlore Wodginite Tanco Mine Microlite Avalon Rare Metals Niobium Chemistry Matter Oxide minerals | Add to Reading ListSource URL: www.commerceresources.comDownload Document from Source WebsiteFile Size: 1,67 MBShare Document on Facebook |