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Article: Investigators at University of Stellenbosch publish new data on mineralogy and petrology.(Report)
- Article from:
- Mining & Minerals
- Article date:
- October 2, 2009
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According to a study from Matieland, South Africa, "Within individual plutons, the trace element concentrations in S-type granites generally increase with maficity (total iron and magnesium content and expressed as atomic Fe + Mg in this study); the degree of variability in trace element concentration also expands markedly with the same parameter. The strongly peraluminous, high-level S-type granites of the Peninsular Pluton (Cape Granite Suite, South Africa) are the product of biotite incongruent melting of a metasedimentary source near the base of the crust."
"Leucogranites within the suite represent close to pure melts from the anatectic source and more mafic ...