Mount Ayliff Complex, South Africai
| Regional Level Types | |
|---|---|
| Mount Ayliff Complex | Complex |
| South Africa | Country |
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Locality type:
Age:
200 ± to 130 Ma
Geologic Time:
Other/historical names associated with this locality:
MAC; Insizwa
Mount Aylifff Complex is located in the northern part of the Eastern Cape and crosses province's into Kwa-Zulu Natal.
The complex forms part of the Karoo Igneous Province (KIP) and has five named lobes. These lobes are remnants of a single continuous intrusive sheet of huge magnitude. The outcrop is now estimated at 800 km² surface area and up to 1200 M thickness. Each lobe has a similiar sequence of rock types, divided into three zones.
Note: Originally the name 'Insizwa' was used for one of the lobes as well as the entire complex and this became confusing. The Mount Ayliff Complex (MAC) is named after the largest village in it's centre.
List of minerals for each chemical element
References
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Year (asc) Year (desc) Author (A-Z) Author (Z-A)Du Toit, A.L. (1910) Copper-nickel deposits of the Insizwa, Mount Ayliff, East Griqualand. Fifteenth Annual report of the Geological Commission, Cape of Good Hope, Cape Town, South Africa, 111-142.
Rose, J.G., (1911) The Insizwa copper nickel deposits. South African Journal of Science, 129-130.
Scholtz, D.L., (1936) The magmatic nickeliferous ore deposits of east Griqualand and Pondoland. Transactions of the Geological Society of South Africa, 39, 81-209.
Du Preez, J.W. (1944) Ann. Univ. Stellenbosch, 22, sect. A, p. 101.
Bruynzeel, D. (1956) A petrographic study of the Waterfall Gorge profile at Insizwa. Annals of the University of Stellenbosch, South Africa, 33A (10), 481-534.
Cabri, L.J. and Harris, D.C., (1972) The new mineral insizwaite (PtBi2) and new data on niggliite (PtSn). Mineralogical Magazine, 38, 794-800.
Tischler, S.E., Cawthorn, R.G., Kingston, G.A. and Maske, S., (1981) Magmatic Cu Ni PGE mineralization at Waterfall Gorge, Insizwa, Pondoland, Transkei. Canadian Mineralogist, 19, 607-618.
Lightfoot, P.C. and Naldrett, A.J., (1983) The geology of the Tabankulu section of the Insizwa Complex, Transkei, southern Africa, with reference to the nickel sulphide potential. Transactions of the Geological Society of South Africa, 86(3), 169-188.
Lightfoot, P.C., Naldrett, A.J. and Hawkesworth, C.J., (1984) The geology and geochemistry of the Waterfall Gorge section of the Insizwa complex with particular reference to the origin of the nickel sulfide deposits. Economic Geology, 79, 1857- 1879.
Maske, S. and Cawthorn, R.G., (1986) The nickel occurrence in the Insizwa Complex, Transkei. In: Anhaeusser, C.R. and Maske, S., (Eds.). Mineral Deposits of Southern Africa, Vols I & II, Geological Society of South Africa, Johannesburg, 2149-2158.
Cairncross, B. and Dixon, R. (1995) Minerals of South Africa. Geological Society of SOuth Africa, 290 pages.
Ferré, E.C., Bordarier, C., Marsh, J.S. (2002) Magma flow inferred from AMS fabrics in a layered mafic sill, Insizwa, South Africa. Tectonophysics, 354(1), 1-23.
Maier, W. D., Marsh, J. S., Barnes, S. J., & Dodd, D. C. (2002). The distribution of platinum group elements in the Insizwa lobe, Mount Ayliff Complex, South Africa: implications for Ni-Cu-PGE sulfide exploration in the Karoo igneous province. Economic Geology, 97(6), 1293-1306.
Marsh J.S., Allen P., Fenner, N. (2003) The geochemical structure of the Insizwa lobe of the Mount Ayliff complex with implications for the emplacement and evolution of the complex and its Ni-sulphide potential. South African Journal of Geology, 106(4), 409-428.
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Mount Ayliff Complex, South Africa