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TitreDiamond exploration and resource evaluation of kimberlites
AuteurKjarsgaard, B A; Januszczak, N; Stiefenhofer, J
SourceElements: An International Magazine of Mineralogy, Geochemistry, and Petrology vol. 15, 6, 2019 p. 411-416, https://doi.org/10.2138/gselements.15.6.411
Année2019
Séries alt.Ressources naturelles Canada, Contribution externe 20200186
ÉditeurMineralogical Soc Amer
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.2138/gselements.15.6.411
Mediapapier; en ligne; numérique
Formatspdf
Sujetskimberlites; diamant; exploration; estimation des ressources; ressources; gestion des ressources; géologie économique; pétrologie ignée et métamorphique; Nature et environnement; Sciences et technologie; minéralogie
Illustrationsphotographs; location maps; distribution diagrams; plots; logs
Diffusé2019 12 01
Résumé(disponible en anglais seulement)
Kimberlites are the main source of natural gem quality diamonds. The intrepid diamond explorer faces three major problems. First, finding a small, usually less than 300 m diameter, kimberlite, which is often highly weathered. Second, evaluating the quantity of diamonds within a kimberlite that often consists of multiple phases of intrusive and extrusive kimberlite, each with potentially different diamond grades. Third, evaluating the rough diamonds, the value of which is dependent on carat-weight, shape, colour, and clarity. Modern advances in mantle petrology, geophysics, geochemistry, geomorphology, and geostatistics now complement historical exploration knowledge and aid in selecting prospective target areas, resource estimation, and evaluating kimberlite-hosted diamond deposits.
GEOSCAN ID326598