Results: 1 - 4 of 4
Dec 31, 1962
Bulletin
… in a sample of Athabasca oil sand identifies it as belonging to … per cent of chert grains in the sand fraction. … Carrigy, M.A. … …
Jan 23, 2020
Data
… marl, tufa, phosphate, silica sand, pumicite, sulphur, fly ash, humalite, and sand and gravel. This dataset is …
Jan 23, 2020
Map
… rare earth elements, salt, sand/gravel, shale, silica sand, stone, sulphur, titanium, …