Mine detail: Grasvally Chrome Mine

Previously called ''

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Location

Lat / long:

-24.33001, 28.98475

Resource(M)

Primary:	Chromium
Tertiary:	PGE, Iron, Silica
Ore:	Chromite
Gangue:	Anorthosite, Chalcopyrite, Pentlandite, Pyrrhotite
Orebody form:	TABULAR/BLANKET
Discovery year:	1961

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Producer
First production started:	1962

Geology

Host type:	Pyroxenite
Associated rock:	Bushveld Igneous Complex (Including The Overlying Merensky Reef), Zoetveld Subsuite
Associated type:	Mafic Intrusive Rock
Structure:	Inward-Dipping Cone-Like Structure; Folding And Faulting (Including Low-Angle Thrusting) Exists, But Are Of Minor Importance; Erosion, Peneplanation And Build-Up Of Younger Sediments Are Basic Criteria Regionally., See Comments
Tectonic:	Platform, Intracratonic
Alteration processes:	Surface And Near-Surface Alteration Of Feldspathic Material Only.

References

MRDS	W028406
DEP	10079234
Reference	{Analytical Data:: SRC.REF: FERROUS AND NONFERROUS MINES AND WORKS IN SOUTH AFRICA; MINERALS BUREAU DIRECTORY NO. 3/79}{Deposit:: OPERATING MINES IN THE REPUBLIC OF SOUTH AFRICA; MINERALS BUREAU, DEPARTMENT OF MINES; DIRECTORY NO. 1/79; 1979 .}{Deposit:: CHROMITE MINES AND RESOURCES IN THE REPUBLIC OF SOUTH AFRICA; UNIVERSITY OF IDAHO FOR M.A.S., US BUREAU OF MINES; SIEMS, P., CRIST, E. M., AND SHEEHAN, L. E., JR.; 1976 .}{Deposit:: FERROUS AND NONFERROUS MINES AND WORKS IN SOUTH AFRICA; MINERALS BUREAU; DIRECTORY NO. 3/79; 1979 .}{Deposit:: DEYOUNG AND OTHERS, 1984, INTERNATIONAL STRATEGIC MINERALS INVENTORY SUMMARY REPORT-- CHROMITE: U.S. GEOLOGICAL SURVEY CIRCULAR 930-B, 41 P.}{Deposit:: MINERAL RESOURCES OF THE REPUBLIC OF SOUTH AFRICA, FIFTH EDITION, HANDBOOK 7, GEOLOGICAL SURVEY, DEPARTMENT OF MINES; 1976}{Other Database:: ISMI}{Production:: REPORTE * ESTIMATES BASED ON INDUSTRY INDICATORS AND OFFICIAL (MINERALS BUREAU) COUNTRY TOTALS ; REPORTE * ESTIMATE BASED ON INDUSTRY INDICATORS AND OFFICIAL (MINERALS BUREAU) COUNTRY TOTALS. ; REPORTERS ESTIMATE BASED ON INDUSTRY INDICATORS AND OFFICIAL (MINERALS BUREAU) COUNTRY TOTALS.}
Reporter	Sweetwood, Charles W., Mccarter, Lorna D.