Mine detail: Doornfontein

Previously called ''

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Location

Lat / long:

-26.3966, 27.30146

Resource(B)

Primary:	Gold
Secondary:	Sulfur-Pyrite, Sulfur, Sulfuric Acid, PGE, Silver
Tertiary:	Uranium
Orebody form:	TABULAR/BLANKET
Discovery year:	1932

Production

Operation type:	Unknown
Production size:	Large
Development status:	Producer
First production started:	1954

Geology

Host rock:	Transvaal System Shales (Pretoria Series), Dolomite (Dolomite Series) And Conglomerates (Black Reef Series);Witwatersrand System (Upper Division)-Quartzites, Shales, Grits, Conglomerates And Carbon Granules
Host type:	Quartzite,Shale,Conglomerate
Associated rock:	Ventersdorp System-Lava
Associated type:	Volcanic Rock (Aphanitic)
Structure:	Unique Continuity Of Gold-Bearing Horizons Over Extended Area, Though Well Marked By Dikes, Faulting, Early Erosion And Redeposition Of Overlying Sediments. The Ventersdorp Contact Reef Unconformably Overlies The Carbon Leader Reef., Gentle Dip With Faulting Locally, And Minor Folding. Intrusive Dikes Penetrate And Dilute Minable Ore Horizons. Overlying Lavas And Dolomites Are Massive.
Tectonic:	Platform
Alteration processes:	None

References

MRDS	W027863
DEP	10079048
Reference	{Deposit:: MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7 ; 1976}{Deposit:: MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; PELLETIER, R.A.; 1964}{Deposit:: GOLD FIELDS OF SOUTH AFRICA LIMITED, ANNUAL REPORTS 1974 - 1977}{Deposit:: DOORNFONTEIN ANNUAL REPORT, 1977.}{Deposit:: DOORNFONTEIN ANNUAL REPORT, 1976.}{Deposit:: DOORNFONTEIN ANNUAL REPORT,1975.}{Deposit:: DOORNFONTEIN ANNUAL REPORT, 1974.}{Deposit:: IVOR JONES, ROY & COMPANY, INC., 1975, SOUTH AFRICAN GOLD SHARES: JOHANNESBURG, IVOR JONES, ROY & COMPANY, INC.}{Production:: CHAMBER OF MINES OF SOUTH AFRICA ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS - 1985 ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS-1986 ; CHAMBER OF MINES OF SOUTH AFRICA - ANALYSIS OF WORKING RESULTS - 1981 ; CHAMBER OF MINES OF SOUTH AFRICA - ANALYSIS OF WORKING RESULTS-1982 ; CHAMBER OF MINES ANALYSIS OF WORKING RESULTS - 1984 ; ANALYSIS OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA. JANUARY - DECEMBER 1979 ; ANALYSES OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA - 1980 ; ANALYSIS OF WORKING RESULTS, CHAMBER OF MINES OF SOUTH AFRICA. JANUARY - DECEMBER 1978}
Reporter	Mccarter, Lorna D, Sweetwood, Charles W., Mccarter, Lorna D.