Formation of unusual yellow Orapa diamonds

Formation of unusual yellow Orapa diamonds

Twenty eclogitic diamonds from Orapa Mine (Botswana) with an unusual yellow colour are characterised for their growth structure, N systematics, and C isotope composition, and the major element composition of their silicate inclusions. The diamonds show complex luminescence with green, blue and non-l...

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Veröffentlicht in:Mineralogy and petrology 2018-12, Vol.112 (Suppl 1), p.209-218
Hauptverfasser: Timmerman, Suzette, Chinn, Ingrid L., Fisher, David, Davies, Gareth R.
Format: Artikel
Sprache:eng
Schlagworte:
Chemical composition
Colour
Defects
Diamonds
Earth
Earth and Environmental Science
Earth Sciences
Fourier transforms
Garnet
Geochemistry
Inclusions
Infrared spectra
Infrared spectroscopy
Inorganic Chemistry
Isotope composition
Isotopes
Mineralogy
Original Paper
Preservation
Silicates
Systematics
Type 1aA diamond
Type 1b diamond
Zonation
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Beschreibung
Zusammenfassung:Twenty eclogitic diamonds from Orapa Mine (Botswana) with an unusual yellow colour are characterised for their growth structure, N systematics, and C isotope composition, and the major element composition of their silicate inclusions. The diamonds show complex luminescence with green, blue and non-luminescent zones and occasional sector zonation. All parts of the diamonds have low total N concentrations (
ISSN:0930-0708
1438-1168
DOI:10.1007/s00710-018-0592-9