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- Merensky_Reef abstract "The Merensky Reef is a layer of igneous rock in the Bushveld Igneous Complex (BIC) in the North West, Limpopo, Gauteng and Mpumalanga provinces of South Africa which together with an underlying layer, the Upper Group 2 Reef (UG2), contains most of the world's known reserves of platinum group metals (PGMs) or platinum group elements (PGEs) - platinum, palladium, rhodium, ruthenium, iridium and osmium. The UG2 Reef, the composition of which is relatively consistent throughout the BIC, is rich in chromite, but lacks the Merensky's gold, copper and nickel by-products, though its PGM reserves may be almost twice those of the Merensky Reef.Chromitite layers occur commonly in large mafic layered intrusions. A current theory is that chromitites form as a result of introduction and mixing of chemically primitive magma with a more evolved magma, which leads to supersaturation of chromite in the mixture, which in turn leads to the formation of a nearly monomineralic layer on the magma chamber floor. The initial recovery of platinum in South Africa took place on several of the large East Rand gold mines and the first separate platinum mine was a short lived venture near Naboomspruit that worked very patchy quartz reefs. The discovery of the Bushveld Igneous Complex deposits was made in 1924 by a Lydenburg district farmer, A F Lombaard. This was an alluvial deposit but its importance was recognised by Hans Merensky whose prospecting work discovered the primary source in the Bushveld Igneous Complex and traced it for several hundred kilometres by 1930. Extensive mining of the Reef did not take place until an upsurge in the demand for platinum group metals used in exhaust pollution control in the 1950s, made exploitation economically feasible. Extraction of metals from the UG2 chromitite could only take place in the 1970s with major advances in metallurgy.".
- Merensky_Reef thumbnail BIC00.jpg?width=300.
- Merensky_Reef wikiPageExternalLink 495.
- Merensky_Reef wikiPageExternalLink Platinum.htm.
- Merensky_Reef wikiPageExternalLink 0,1588,474,00.html.
- Merensky_Reef wikiPageID "10855404".
- Merensky_Reef wikiPageLength "2996".
- Merensky_Reef wikiPageOutDegree "37".
- Merensky_Reef wikiPageRevisionID "635458146".
- Merensky_Reef wikiPageWikiLink Bushveld_Igneous_Complex.
- Merensky_Reef wikiPageWikiLink Category:Geologic_formations_of_Africa.
- Merensky_Reef wikiPageWikiLink Category:Geology_of_South_Africa.
- Merensky_Reef wikiPageWikiLink Category:Igneous_rocks.
- Merensky_Reef wikiPageWikiLink Category:Petrology.
- Merensky_Reef wikiPageWikiLink Category:Platinum.
- Merensky_Reef wikiPageWikiLink Category:Rock_formations.
- Merensky_Reef wikiPageWikiLink Chemical_element.
- Merensky_Reef wikiPageWikiLink Chromite.
- Merensky_Reef wikiPageWikiLink Chromitite.
- Merensky_Reef wikiPageWikiLink Copper.
- Merensky_Reef wikiPageWikiLink Gauteng.
- Merensky_Reef wikiPageWikiLink Gold.
- Merensky_Reef wikiPageWikiLink Hans_Merensky.
- Merensky_Reef wikiPageWikiLink Igneous_rock.
- Merensky_Reef wikiPageWikiLink Iridium.
- Merensky_Reef wikiPageWikiLink Limpopo.
- Merensky_Reef wikiPageWikiLink Mafic.
- Merensky_Reef wikiPageWikiLink Magma.
- Merensky_Reef wikiPageWikiLink Magma_chamber.
- Merensky_Reef wikiPageWikiLink Metal.
- Merensky_Reef wikiPageWikiLink Metallurgy.
- Merensky_Reef wikiPageWikiLink Mining.
- Merensky_Reef wikiPageWikiLink Mpumalanga.
- Merensky_Reef wikiPageWikiLink Nickel.
- Merensky_Reef wikiPageWikiLink North_West_(South_African_province).
- Merensky_Reef wikiPageWikiLink Osmium.
- Merensky_Reef wikiPageWikiLink Palladium.
- Merensky_Reef wikiPageWikiLink Platinum.
- Merensky_Reef wikiPageWikiLink Platinum_group.
- Merensky_Reef wikiPageWikiLink Pollution.
- Merensky_Reef wikiPageWikiLink Rhodium.
- Merensky_Reef wikiPageWikiLink Ruthenium.
- Merensky_Reef wikiPageWikiLink South_Africa.
- Merensky_Reef wikiPageWikiLink File:BIC00.jpg.
- Merensky_Reef wikiPageWikiLinkText "Merensky Reef".
- Merensky_Reef wikiPageUsesTemplate Template:Portal.
- Merensky_Reef subject Category:Geologic_formations_of_Africa.
- Merensky_Reef subject Category:Geology_of_South_Africa.
- Merensky_Reef subject Category:Igneous_rocks.
- Merensky_Reef subject Category:Petrology.
- Merensky_Reef subject Category:Platinum.
- Merensky_Reef subject Category:Rock_formations.
- Merensky_Reef hypernym Layer.
- Merensky_Reef type AnatomicalStructure.
- Merensky_Reef type Formation.
- Merensky_Reef type Landform.
- Merensky_Reef type Subfield.
- Merensky_Reef type Unit.
- Merensky_Reef comment "The Merensky Reef is a layer of igneous rock in the Bushveld Igneous Complex (BIC) in the North West, Limpopo, Gauteng and Mpumalanga provinces of South Africa which together with an underlying layer, the Upper Group 2 Reef (UG2), contains most of the world's known reserves of platinum group metals (PGMs) or platinum group elements (PGEs) - platinum, palladium, rhodium, ruthenium, iridium and osmium.".
- Merensky_Reef label "Merensky Reef".
- Merensky_Reef sameAs Q1921596.
- Merensky_Reef sameAs Merensky_Reef.
- Merensky_Reef sameAs m.02qs3p8.
- Merensky_Reef sameAs Q1921596.
- Merensky_Reef wasDerivedFrom Merensky_Reef?oldid=635458146.
- Merensky_Reef depiction BIC00.jpg.
- Merensky_Reef isPrimaryTopicOf Merensky_Reef.