 | Defnet, Peter A., Wise, Michael A., Harmon, Russell S., Hark, Richard R., Hilferding, Keith (2021) Analysis of Garnet by Laser-Induced Breakdown SpectroscopyâTwo Practical Applications. Minerals, 11 (7) 705 doi:10.3390/min11070705 | Journal (article/letter/editorial) | | end-member typesâalmandine [Fe3 Al2 Si3 O12 ], pyrope [Mg3 Al2 Si3 O12 ], spessartine [Mn3 Al2 Si3 O12..., Hawk Mine, NC, USA; Rutherford Mine, VA, USA; Little 3 Mine, Ramona, CA, USA; Golcando Mine, Minas...Mexico; Broken Hill, Australia; Ducktown Mine, TN, USA; Jeffrey Mine, QC, Canada). Garnetiferous kimberlite...mantle. Pyrope is the dominant garnet species from our kimberlite localities (e.g., Kimberly, South Africa;...associated with chromite pods (e.g., Saranovskii Mine, Russia). Samples of garnet in medium- to high-grade |  | | Journal (article/letter/editorial) | | dynasty (320â298 B.C.) who regulated an active local diamond trade (Maillard, 1980). Legends associated... Figure 4. A diamond crystal in âblue groundâ from South Africa, probably from the collection of Gardner and...Hyderabad, and the only modern producing diamond mine in India exploits the Majhgawan lamproite pipe near...Brazilian era continued until the South African discoveries of the 1860âs, and South African diamond production...until the first decades of the 20th century. South Africa is still a significant producer, but since about |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | | Book | | Phase 5. Sample Treatment D) World Production E) South African Diamond Occurrences 1. Large Kimberlite...Finsch 1.4 Kimberley 1.5 Koffiefontein 2. Smaller mineralised kimberlites in South Africa 2.1 The Oaks... their relative production contributions in South Africa were, primary (kimberlite) 8.63 million carats...suggest approximately 40% for the Kimberley mines and 55% for Premier mine. The proportion of gems in the...deposits is over 98%. The MIBA mine in the Congo and the Argyle mine in Australia have an average gem |  | | Book | | with whose research groups at the universities of Cape Town and Chicago I have had long and fruitful collaboration...collaboration. Much of my fieldwork in southern Africa has been carried out with the cooperation and assistance...7.3 2.8 2.9 Africa . . . . . . . . . . . . . . . . . . . . . . . . . . . . West Africa . . . . . . .... . . . . Central Africa. . . . . . . . . . . . . . . . . . . . . . . East Africa. . . . . . . . . .... . . . . . . . . . . . . . . . Southern Africa . . . . . . . . . . . . . . . . . . . . . U.S.S.R. . |  | | Book | | fields in South Africa 8 1.4 Major kimberlite sites in Russia 9 1.5 Main Russian diamond mine sites and...within Siberian platform 13 1.6 Kimberlite fields south of the White Sea 15 1.7 Diamond placers in Venezuela...Kimberlites, lamproites, and diamonds in the Kimberley region, Western Australia 25 1.10 Important...during formation of kimberlites of the diamond and pyrope subfacies 92 6.4 Model of idealized kimberlite...kimberlite, Colorado 97 6.7 High wall at Kelsey Lake mine in Colorado with kimberlite breccia lying under |  | | Journal (article/letter/editorial) | | metamorphism, and metasomatism: The complex history of South African upper-mantle symplectites Stephen W. Field*...more of the minerals orthopyroxene, clinopyroxene, pyrope garnet, Mg-rich amphibole, and phlogopite, are...are found in the Horoman peridotite complex in northern Japan (Takahashi and Arai 1989), in ultramafic...(Zuyev 1971). In a study of peridotites from South Africa (Field and Haggerty 1994), up to one third of...in upper mantle peridotite xenoliths included in South African kimberlites. Symplectites are described |  | | Journal (article/letter/editorial) | | inclusions from De Beers Pool diamonds, Kimberley, South Africa D. Phillips a,*, J.W. Harris b, K.S. Viljoen...Mines Ltd., P.O. Box 82232, Southdale, 2135, South Africa b Received 27 June 2003; accepted 14 December...important De Beers Pool kimberlites in Kimberley, South Africa, are characterised by harzburgitic compositions...Beers Pool kimberlites in Kimberley, South Africa (28j46VS, 24j48VE). The Kimberley region is significant...the site of the first diamond discoveries in South Africa, the type locality for Group I (basaltic) kimberlites |  | Schulze, Daniel J., Coopersmith, Howard G., Harte, Ben, Pizzolato, Lori-Ann (2008) Mineral inclusions in diamonds from the Kelsey Lake Mine, Colorado, USA: Depleted Archean mantle beneath the Proterozoic Yavapai province. Geochimica et Cosmochimica Acta, 72 (6) 1685-1695 doi:10.1016/j.gca.2007.09.037 | Journal (article/letter/editorial) | | Mineral inclusions in diamonds from the Kelsey Lake Mine, Colorado, USA: Depleted Archean mantle beneath...from the Kelsey Lake Mine in the Colorado-Wyoming State Line Kimberlite district. Eighteen olivines, seven...other diamond suites studied in the State Line district (Sloan, George Creek), which are overwhelmingly...from the Kelsey Lake diamond mine in the State Line kimberlite district on the Colorado-Wyoming border...border in the western USA (Fig. 1). The Kelsey Lake mine was in operation intermittently from 1996 to 2001 |  | | Journal (article/letter/editorial) | | The Isotopic Composition of Strontium in Some South At)ican Kimberlites ROGE~I-I. MITCNELL D e p a r...work a number of fresh whole rock samples from South African pipes and fissures have been analysed in...Wesselton kimberlite pipe, one of the important Kimberley group of pipes. I t is emplaced in a thick series...homogenise kimberlites, but have undoubtedly caused some local Rb and Sr redistribution. The intrusions appear...required. Of particular importance with regard to South African kimbertite is the possible assimilation |  | | Journal (article/letter/editorial) | | the minerd collector, gold occasionally occurs in local high-grade areas in many deposits, ensuring a more...Hope Diamond (46 carats, fig. 31, the canary-yellow Cape Diamond (I67 carats, uncut), and the orange-yellow...graphite. magnetite, ilmenite, garnet (usually pyrope). chrome-diopside, chlorite, biotite, phlogopite...Diamond, found by a mine crusher attendant and subsequently cut into three gems: the Cape Diamond, a 167-carat...crystal ever recovered. Sketches of well-formed South African octahedra weighing 458 carats and Downloaded |  | | Journal (article/letter/editorial) | | of Pretoria, University Road, 0002 Pretoria, South Africa latter two stages, it is interesting to speculate...mining Early evidence of pre-historic âminingâ with local beneficiation has been described from archaeological...com). D = Damtshaa Mine, G = Ghag- hoo Mine, J = Jwaneng Mine, K = Karowe (AK06) Mine, Kx = KX36 prospect... L = Letlhakane Mine, M = Martinâs Drift (Lerala) kimberlites, O = Orapa (AK01) Mine, T = Tsabong M1...of two of the kimberlites of the Damtshaa diamond mine (Fig. 1), small silcrete artefacts from the earliest |  | | Book (volume) | | rmf ' j^lr ^1 THE DIAMOND MINES OF SOUTH AFRICA VOL. II Digitized by the Internet Archive...org/details/diamondminesofso02will THE DIAMOND MINES OF SOUTH AFRICA BY GARDNER F. WILLIAMS, M.A. GENERAL MANAGER...Storing and Handling of Dynamite. The Fire in De Beers Mine, iith July, 1888. The Occurrence of âMud Rushes...Churches in the Compounds. The Mining Towns Kimberley : its ........ Public Buildings, Streets,...Lapidaries. in in Produc- Orange River Colony, the South Art of Carving taught by The Modern Diamonds |  | | Journal (article/letter/editorial) | | and sheared peridotite xenoliths from Kimberley, South Africa: Origin of the textural variation in the...A B S T R A C T Mantle xenoliths from Kimberley, South Africa, contain texturally distinct peridotites;...and 950â1080 °C for sheared peridotites. The Kimberley peridotites showing various deformation textures...large local variations in the degree of deformation in the cratonic lithosphere beneath Kimberley require...conditions of peridotite xenoliths from Kimberley, South Africa. The results indicate that not all sheared |  | | Journal (article/letter/editorial) | | from 16 intrusions in Lesotho, the Republic of South Africa, and Tanzania have been investigated. The following...material studied (especially the zircons from the Kimberley mines) was subangular in shape, with one or a...predominate. Zircons from the Kimberley group of intrusions (i.e., Kimberley, Dutoitspan, De Beers, Wesselton...bronzite that are found in the kimberlites of northern Lesotho also show some fractures and cracks (NlxoN...with respect to the abundance of zircon in the Kimberley and Frank Smith mines, he admitted that zircon |  | Muller, M.R., Jones, A.G., Evans, R.L., GrĂŒtter, H.S., Hatton, C., Garcia, X., Hamilton, M.P., Miensopust, M.P., Cole, P., Ngwisanyi, T., Hutchins, D., Fourie, C.J., Jelsma, H.A., Evans, S.F., Aravanis, T., Pettit, W., Webb, S.J., Wasborg, J. (2009) Lithospheric structure, evolution and diamond prospectivity of the Rehoboth Terrane and western Kaapvaal Craton, southern Africa: Constraints from broadband magnetotellurics. Lithos, 112. 93-105 doi:10.1016/j.lithos.2009.06.023 | Journal (article/letter/editorial) | | Rehoboth Terrane and western Kaapvaal Craton, southern Africa: Constraints from broadband magnetotellurics M...Geophysics, Woods Hole Oceanographic Institution, Clark South 263, 266 Woods Hole Road, Woods Hole, Massachusetts...Johannesburg, South Africa e Council for Geoscience, 280 Pretoria Street, Silverton, Pretoria 0001, South Africa...Pretoria, South Africa i De Beers Group Services, Private Bag X01, Southdale 2135, South Africa j Rio Tinto...Billiton, 6 Hollard Street, Johannesburg 2001, South Africa l University of the Witwatersrand, School of |  | | Journal (article/letter/editorial) | | popularly denominated ' South Africa' is usually con.sidered as extending from the Cape to the Zambezi River...also the dividing-line between Northern and Southern Rhodesia. The South African area is made up principally...Devonian up to the Jurassic System. Even at t h e Cape, however, inliers of older rocks are exposed, which...certainty to any particular period. These ' Pre-Cape' rocks become increasingly important as the Transvaal... few of the intensely sheared rocks of such a district, except very locally--a few yards, for instance |  | | Journal (article/letter/editorial) | | Craton; Kaapvaal Craton; Lithospheric mantle; Cr-pyrope garnets; Seismic tomography; Kimberlites 1. Introduction...and that Fig. 1. Structural units of southern Africa, as discussed in this paper, superimposed on a...use these xenocryst suites, including >3500 Cr-pyrope garnets from >50 kimberlites (Fig. 2), to examine...kimberlites and some alluvial deposits of local derivation; over 3400 Cr-pyrope garnets from more than 50 localities...temperature for each grain can be referred to a local paleogeotherm to estimate the depth from which the |  | | Journal (article/letter/editorial) | | R*CKWOOD** Division of Geological Sciences, University of Cape Town 12,eceived November 4, 1969 Abstract. Brief...in the kimberlites of Lesotho, Rhodesia, Sauth Africa, and Tanzania. Six new mineral assemblages, which...andradite) ratio, but varying appreciably in both pyrope and (uvarovite -~ andradite). Similar measurements...Johannesburg, South Ah'ica. ** Present address: School of Applied Geology, University of New South Wales, Kensington...(1932), a group of workers at the University of Cape Town has been engaged on further petrological and |  | | Book (volume) | | rise and development of the diamond mines of South Africa, from an historical, economic and technical...days on the diamond fields when the mines in the Kimberley and Jagersfontein areas were the only diamond...collect during my many visits to all parts of South Africa where kimberlite deposits occurred and the filing...was necessary to file * "The Diamond Mines of South Africa," by Gardner F. Williams. V . Vl l I I...my attention from the time of my arrival in South Africa was the accidental and cognate inclusions found |  | | Book | | stationery while vacationing on the Natal Coast of South Africa. Wilson uses it as a symbol of the Ivory Coast...blood, my father (a distinguished editor ol the Cape Times) having been one ol lour sons ol a sullragan...became imbedded in the Witwatersrand formation in South Africa . 98 Continental Shields of the Earth. 101...108 The Hope Diamond (Color Plate). 129 Map of South Africa . 133 Distribution of known kimberlite occurrences...from Kimberley Mine . 140 The "Big Hole of Kimberley" today. 141 The open pit of the Kimberley Mine in |  | Jaques, A. L., O'Neill, H. St. C., Smith, C. B., Moon, J., Chappell, B. W. (1990) Diamondiferous peridotite xenoliths from the Argyle (AK1) lamproite pipe, Western Australia. Contributions to Mineralogy and Petrology, 104 (3) 255-276 doi:10.1007/bf00321484 | Journal (article/letter/editorial) | | (McCallum and Eggler /976), 2 from Finsch in South Africa (Shee et al. 1982) and the remainder from Yakutia...(Atkinson et al. 1984a, b), is located in the east Kimberley region, Western Australia at the SW side of Lake...Lake Argyle on the Ord River some 200 km south of the town o f K u n u n u r r a (lat 16 ~ 42' S, long...and R u t l a n d 1984) at the margin of the Kimberley Basin and has been dated (Rb-Sr phlogopite - whole...from a lower grade ( < 1 ct/tonne) facies at the northern end of the pipe, the " N o n - S a n d y Tuff" |  | | Journal (article/letter/editorial) | | Kimberlite-hosted diamond deposits of southern Africa: A review Matthew Field a,â, Johann Stiefenhofer...Southdale, 2135, South Africa c De Beers Group Services, PO Box 47, Kimberley, South Africa d De Beers Canada...deposits in central South Africa in the mid nineteenth century, it was at Kimberley where the volcanic...industrial development of southern Africa. Following the discoveries at Kimberley, even more valuable deposits...deposits were discovered in South Africa and Botswana in particular, but also in Lesotho, Swaziland and Zimbabwe |  | | Journal (article/letter/editorial) | | DIAMONDS AND MANTLE-DERIVED XENOLITHS FROM SOUTHERN AFRICA J.D. KRAMERS I Bernard Price Institute of Geophysical...University of" the Witwatersrand, Johannesburg, 2001 {South Africa/ Received April 6, 1978 Revised version received...Premier Mine (Transvaal), the Finsch Mine (northern Cape Province) and the Kimberley mines (northern Cape...sulphide inclusions in the diamonds from Finsch and Kimberley are in excess of 2 b.y., although the host kimberlites... Samples were eclogites from the Roberts Victor Mine (Orange Free State), peridotites from the Matsoku |  | | Journal (article/letter/editorial) | | spinels in the NAC, up to 50% of grains at the Northern Territory (NT) border. Increasing dominance of...considerably underexplored and the ageing Argyle mine and recent closure of operations at Ellendale warrant...arizona.edu 1 Trigon GeoServices Ltd, #35-15, 2780 South Jones Blvd., Las Vegas, NV 89146, USA 2 Geological... 135° 141° Fohn 12° N Pine Creek Orogen Kimberley Basin Aries Argyle Georgetown Inlier Roper Field...Bulljah Pool CRATON NORTHERN TERRITORY QUEENSLAND Musgrave Province SOUTH AUSTRALIA WESTERN AUSTRALIA |
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