Eastern Cape
Producer

De Beers Mine

Eastern Cape, South Africa
Diamond
⌖ Show on mapUSGS source ↗
Commodities
PrimaryDiamond
Commodity typeN
Deposit
Model31: Diamond-bearing kimberlite pipes
Deposit sizeM
WorkingsUnderground
Orebody formELLIPTICAL/VERTICAL
Ore controlVolcanic Crater Of Explosive Type Filled With Kimberlite
Materials
GangueGarnet, Ilmenite, Phlogopite
Geology
Host rockKimberlite · Dwyka Tillite And Shale
Associated rockGranite · Debeers Kimberlite;Melaphyre And Granite
StructureAn Elliptical/Vertical Pipe In Precambrian Melaphyre And Granite And In Karroo System Dwyka Tillite And Shale, Debeers Kimberlite (Cretaceous); Dwyka Tillite & Shale (Karroo) (Paleozoic); Melaphyre And Granite (Precambrian)
Tectonic settingShield
Alteration"Yellow Ground" Oxidized And Tuffaceous To Depth Of 15 M
Economic & production
Development statusProducer
First production1871
Discovery year1871
Identification
Deposit ID10071396
MRDS IDW014765
RegionAF
Data scoreB
Coordinates-28.72987, 24.78485
References
MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R. A.; 1964INTERNATIONAL DIAMOND ANNUAL; WILSON, A. N.: VOL. 1, 1971MODERN PRACTICES IN DIAMOND MINING IN SOUTH AFRICA; THE SOUTH AFRICAN INSTITUTE OF MINING AND METALLURGY; JOHANNESBURG; MARCH 1961"KIMBERLEY CENTENARY" (SPECIAL SUPPLEMENT TO THE DIAMOND NEWS AND S. A. JEWELLER, JULY 1971), "THE KIMBERLEY DIAMONDS"; DEBEERS CONSOLIDATED MINES BROCHURE; UNDATED DEBEERS CONSOLIDATED MINES LIMITED ANNUAL REPORT; 197DE BEERS CONSOLIDATED MINES LTD ANNUAL REPORTS ; DE BEERS ANNUAL REPORT - 1983 ; DE BEERS ANNUAL REPORT - 1984 ; DE BEERS ANNUAL REPORT - 1985 ; DE BEERS ANNUAL REPORT-1986 ; DE BEERS CONSOLIDATED DIAMOND MINES LIMITED 1979 ANNUAL REPORT ; DE BEERS CONSOLIDATED DIAMOND MINES LIMITED ANNUAL REPORT 1980 ; DE BEERS ANNUAL REPORT 1981 ; DE BEERS ANNUAL REPORT-1982 ; DEBEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS 1971 - 1977 ; DE BEERS DIAMONDS MINES LIMITED ANNUAL REPORT 1978 ; DE BEERS CONSOLIDATED MINES LIMITED ANNUAL REPORTS: 1971 - 1976