Diamond Exploration and Resource Evaluation of Kimberlites

被引：21

作者：

Kjarsgaard, Bruce A. ^{[1
]}

Januszczak, Nicole ^{[2
]}

Stiefenhofer, Johann ^{[3
]}

机构：

[1] Geol Survey Canada, 601 Booth St, Ottawa, ON K1A 0E8, Canada

[2] De Beers Grp, Toronto, ON, Canada

[3] Anglo Amer Operat Ltd, Corp Div, Minres, Johannesburg, South Africa

来源：

ELEMENTS | 2019年 / 15卷 / 06期

关键词：

kimberlite; diamond; exploration; resource evaluation;

D O I：

10.2138/gselements.15.6.411

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

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.

引用

页码：411 / 416

页数：6

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