Results: 1 - 3 of 3
Jul 28, 2010
Data
… application was created by the Minerals and Coal Geoscience … Report OFR 91-17. Industrial minerals from that data source have …
Dec 31, 1970
Earth Sciences Report
… and 5 per cent or more other minerals. Heavy mineral assemblages …
Dec 31, 1968
Bulletin
… components included are clay minerals and feldspars. The …