Petrography and thermobarometry of mantle xenoliths of Cat 115 diamond-bearing kimberlite (Angola)

Montgarri Castillo-Oliver*, Joan Carles Melgarejo i Draper, Salvador Gali Medina, Vladimir Pervov

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

A mineralogical and petrological study of some mantle xenoliths (harzburgites, Iherzolites, pyroxenites) from the Cat 115 pipe (Angola) has been carried out. Monomineral and two-mineral thermobarometers have been applied in order to define the geotherm beneath the Lunda kimberlitic province (Angola), which is close to the -38 mW/m(2) proposed by Pollack and Chapman (1977). The results of this study show that most of the analysed xenoliths equilibrated inside the diamond stabillty field. These results are consistent with the fertile character of the kimberlite, and can be useful for other kimberlites in the Lunda domain.

Original languageEnglish
Title of host publicationLet's talk ore deposits
Subtitle of host publicationproceedings of the Eleventh Biennial SGA Meeting
EditorsF Barra, M Reich, E Campos, F Tornos
Place of PublicationAntofagasta
PublisherEdiciones Universidad Católica del Norte
Pages631-633
Number of pages3
ISBN (Print)9789562873291
Publication statusPublished - 2011
Externally publishedYes
Event11th SGA Biennial Meeting - Antofagasta, Chile
Duration: 26 Sep 201129 Sep 2011

Conference

Conference11th SGA Biennial Meeting
CountryChile
CityAntofagasta
Period26/09/1129/09/11

Keywords

  • kimberlite
  • indicator minerals
  • geothermobarometry
  • diamond

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