Low-calcium garnet harzburgites from southern Africa. their relations to craton structure and diamond crystallization

Low-calcium garnet harzburgites from southern Africa. their relations to craton structure and diamond crystallization

Low-calcium garnet harzburgite xenoliths from the Kaapvaal craton in southern Africa were analyzed. Low-calcium garnets in harzburgite xenoliths are distinct from those that crystallized with diamonds either as inclusions or as grains in diamondiferous kimberlites that disaggregated during eruption.

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Veröffentlicht in:Contributions to mineralogy and petrology 1993-03, Vol.113 (3), p.352-366
Hauptverfasser: BOYD, F. R, PEARSON, D. G, NIXON, P. H, MERTZMAN, S. A
Format: Artikel
Sprache:eng
Schlagworte:
Calcium
Crystalline rocks
Crystallization
Crystallography
Diamonds
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry
Geology
Igneous and metamorphic rocks petrology, volcanic processes, magmas
Mineralogy
Minerals
Petrology
Soil and rock geochemistry
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Beschreibung
Zusammenfassung:Low-calcium garnet harzburgite xenoliths from the Kaapvaal craton in southern Africa were analyzed. Low-calcium garnets in harzburgite xenoliths are distinct from those that crystallized with diamonds either as inclusions or as grains in diamondiferous kimberlites that disaggregated during eruption.
ISSN:0010-7999
1432-0967
DOI:10.1007/BF00286927