 | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...reason of the great diversity and magnitude of South African mineral deposits and local mining operations...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Book | | Si Ag Na Sr S Ta Te Tb Tl Th Tm Sn Ti W U V Xe Yb Y Zn Zr atomic number 60 10 28 41 7 76 8 46 15 78 19...a divalent cation such as Ca2 +, Mg2 + and Fe2 +; Y is a trivalent ion such as Al3 + , Fe3 + or Ti3+)...general formula XY204, where X is a divalent and Y a trivalent cation. An example is chromite, FeCr204...images' of each other Left: Cerussite from South- West Africa, forming multiple intergrowths Far left:...accompanying diagram shows. The axes are labelled x, y, z; in the most sym¬ metrical system, the cubic, all |  | | Book | | '.:. :,.· ~'. ', •• 1, •,· \:_)\_?. '.:,y::_.;:' • .-.,··: ..,;'.-·.:·.;:/f/t'l.._._._,, '···••::::••...last, at www.MineralogicalRecord.com I IIMORIITE-(Y) EUROPE FRANCE Trimouns quarry, Luzenac, Ariege....extremely rare yttrium silicate-carbonate iimoriite-(Y) occurs at Trimouns as colorless, pink and pale brown...talc vug in 1997, is 1.7 cm long (Marty, 2004 ). AFRICA widely in Litchfield County, where good crystals...which they called the Bentley Lake Road occurrence, south of Bancroft. Sharp, flattened rhombohedral ilmenite |
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