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| Diamond Geology Published on www.debeersgroup.com Index A) Classification and genetic models B) Exploration...Sample Treatment D) World Production E) South African Diamond Occurrences 1. Large Kimberlite Mines 1...Finsch 1.4 Kimberley 1.5 Koffiefontein 2. Smaller mineralised kimberlites in South Africa 2.1 The Oaks...Oaks 2.2 The Zebediela Kimberlites 2.3 The Bellsbank-Barkly West Area 2.4 The Boshof Area 2.5 Theunnissen...Theunnissen and Virginia 2.6 The Loxtondal Cluster 2.7 Jagersfontein 2.8 Lace and Voorspoed 3. Alluvial Deposits |
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| e g e o r ev Kimberlite-hosted diamond deposits of southern Africa: A review Matthew Field a,â, Johann...Southdale, 2135, South Africa c De Beers Group Services, PO Box 47, Kimberley, South Africa d De Beers Canada...April 2008 Keywords: Diamond Kimberlite Diatreme Pipe Dyke Mantle-xenolith Diamond-inclusion A B S T R...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 |
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| EDITORIAL COVER PHOTO: Bayldonite. Penberthy Croft mine, St. Hilary, Cornwall. Globular aggregates to 0...------- 16 ------THE VAN MINE S.J.S. Hughes -------26 ------A JOURNEY THROUGH NORTHERN SPAIN David I. Green... MINERAL NOTES SIEGENITE FROM ERGLODD MINE, TALYBONT, DYFED, WALES RGLODD Mine is located 200 metres east of...sphalerite (Livingstone l'I al., 1976); in the South Wales Coalfield it is found in clay-ironstone nodules...(1985) Siegenite in clayironstone nodules from the South Wales Coalfield. Joumal of the Russell Society 1 |
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| Ultrapotassic clinopyroxene from the Kumdy-Kol microdiamond mine, Kokchetav Complex, Kazakhstan: Occurrence, composition...mineral solubilities in fluids using a hydrothermal diamond-anvil cell and SR-XRF: Solubility of AgCl in waterâChristian...Hg-contamination in soils and stream sediments in the mineral district of Nambija, Ecuadorian Amazon (example of an impacted...developed within tailings of a former metalliferous mineââEnguialès, Aveyron, Franceâ Alexandra Courtin-Nomade...partitioning in river sediments severely polluted by acid mine drainage in the Iberian pyrite beltâE. GalĂĄn, J |
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| (Novosibirsk) International Treasurer: H.O.Meyer (USA) Local Treasurer: 0 AKozmenko (Novosibirsk) Members: V...Geological-mineralogical system of searching for diamond deposits...1 A kimberlitic lamprophyre and associated...rocks from Pishin District, Pakistan.4 Reasons of variations of individual diamond crystals and petrogenetic...experimental study on growth and resorption of diamond in kimberlite melt.8 Melting experiments on the...lamprophyres, lamproites and kimberlites of the Kola peninsula and Northern Karelia.............28 Experimental |
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| The geology of South Australia Volume 2 The Phanerozoic Bulletin 54 BULL 054 (Vol 2) Geological Survey...Survey of South Australia Bulletin 54 The geology of South Australia Volume 2 The Phanerozoic Edited...Minister for Mines and Energy Š Government of South Australia 1995. This work is copyright. Apart from...prior written permission from the Government of South Australia available through the Department for Manufacturing...(Eds), 1995. The geology of South Australia. Vol. 2, The Phanerozoic. South Australia. Geological Survey |
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| Namibia rank amongst the top five mining countries in Africa. both in terms of production and reserves. In this...century when the Gennan Colonial Office in South West Africa appointed Government Geologists to carry out...wait until 1926, when the Geological Survey of South Africa opened a branch office under the direction of...magnetite quartzites and sedex lead-zinc deposits of South Africa (Rozendaal, 1978; 1986; Ryan et al., I986) where...molybdenumdeposits occur in YioolsdrifSuite rocks south of the Orange River. The Orange River Group and |
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| Geological Survey NU b RI Geological Survey of South Australia, Department of State Development SA, GPO...deposits, and fluvial/alluvial (e.g., gold and diamond) deposits. Rivers and streams carry HM-bearing...(dense) minerals in the sediments, such as gold, diamond, rutile, ilmenite and zircon, can then be reworked...Australia, Canada, China, India, Kenya, Madagascar, South Africa, Sri Lanka and the USA (Van Gosen et al., 2014)...century research on HM deposits has gone beyond local petrologic descriptions and extended to the study |
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| GUIDE TO THE GEOLOGY AND MINERAL RESOURCES OF SOUTH AUSTRALIA N. H. LUDBROOK HPRM 2018D037863 Cover...Mines and Energy South Australia A GUIDE TO THE GEOLOGY AND MINERAL RESOURCES OF SOUTH AUSTRALIA by ...Government Pri nter South Australia , 1980 Frontispiece Cliffs of the Murray River south of Morgan. Geology.... . . . . 41 5 Page St Vincent Basin 43 Northern basins overlying the southwestern margin of the.... . . . . . . . . . 46 Geological History of South Australia . . . . . . . . . . . . . . . . . . . |
 | Wang, Alian, Dhamelincourt, P., Meyer, H. O. A., Guo, Lihe, Zhang, Andi (1994) A carbon-rich multiphase inclusion in a Chinese diamond and its geochemical implications. Contributions to Mineralogy and Petrology, 117 (1) 15-24 doi:10.1007/bf00307726 | Journal (article/letter/editorial) |
| carbon-rich multiphase inclusion in a Chinese diamond and its geochemical implications Received: 20...January 1994 Abstraet A multiphase inclusion in a diamond from Liaoning province, China consists of an olivine...multiphase inclusion from the host diamond. Microcrystallites of diamond and graphite are embedded in the...form and morphology of the microcrystallites of diamond and graphite in the olivine suggests they formed...contemporaneously with the olivine and the host diamond. An alternative suggestion is that they formed |
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| CONTRIBUTION TO T H E STUDY OF T H E RAINFALL MAP OF SOUTH AFRICA.â Downloaded by [UQ Library] at 03:22 14 March...mean annual rainfall for 567 stations in South and East Africa. These have been computed from all the iuformation...â Symonsâs â Meteorological Magazine,â and the Northern News. Besides this the directors of some of the...much larger and truly representative account of South African rainfall than it W M possible to give in...J. R. Sutton, â An Introduction to the Study of South African Rainfall,â â Trans. Phil. SOC. S. Afr.,â |
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| Australia M. POWNCEBY* CSIRO Minerals, Box 312 Clayton South VIC 3169, Australia ABS TR AC T Detrital chrome-spinels...what are now the states of Victoria, New South Wales and South Australia. In Pliocene times, economic concentrations...ilmenite formed as beach placer deposits within the Loxton-Parilla Sands unit. Early discoveries within the...Mineralogical Society mainly in the western, northern and central parts of the basin, provide the current...Schematic maps showing (a) the distribution of the Loxton-Parilla Sands unit within the Murray Basin and |
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| Treasurer 4401 SW Holl St.. Seatlle, WA98118 SOUTH CENTRAL FEDERATION OF MINERAL SOCIETIES JEWELRY...For additional information and requ,sts to the South Central Federation ⢠Theory and Practice By Thomas...books ever wl1tt8n about gem faceting lnctudilg diamond cutting. In Pfll)al8tlon for neal1y foix years...and diamond cutting aoldly," says Denver clamond cutter John Bucholtz. who reviewed the diamond cutting...gem rough evaluation to dyeing finished gems to diamond cutting ... It's all In MASTER FACETING-and then |
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| VCOGG IGE AE eT ae oe OE ere eT esos ojo heaves Diamond deposits of Australia VARA GiSOnN GBS itis Va Danciinand...ee }. tak eee eee Gold deposits of Hill 50 Gold Mine NL at Mount Magnet M.J. Thompson, R.B. Watchorn...PAPIVOSNGUSEM MAae eo OC eae POORER OO ee: Hannan South gold deposit JcC2S chillertand MeL aIvey: OAM aee...Vageeie oes 80 OO De a eee Se Labouchere and Deep South gold deposits EI ONMGRANG AM sos LV CV re oer iat...waiinceacte an 8 EE OEE CHAPTER 4: PRECAMBRIAN OF NORTHERN AUSTRALIA OROGENIC DOMAINS AND COVER SEQUENCES |
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| M. Brady, Scottish - B. Jackson, South East - C.H. Winter, South West - R.M. Slater Examiners: A.J.... Dikkumbura, about 15 km east of the city of Galle. The local people call the stone 'KM palingu' which means milky...networks observed in quartzes from the Ratnapura District, Sri Lanka, are explained by the presence of up...bottle-green demantoid garnet from Val Malenco, northern Italy, may contain fibrous hair-like inclusions...the Dutch word demant which means diamond. These garnets are 'diamond-like' because of their impressive |
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| laterites) or new deposit discoveries. Based on present mine plans and proposals, future metal production will...incorporated into each specific commodity (e.g., a CuâZn mine would be included in both sectors); ⢠in cases where...produce that metal. In general, it is clear that a mine should be included (e.g., Golden Grove in Cu and...productionâ is derived by the summation of all individual mine production from the compiled data set. The reported...variety of factors, including errors in individual mine production, rounding errors, financial versus calendar |
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| British Columbia California Colorado Connecticut District of Columbia Delaware Department Florida Georgia...Wyo. Yukon 3 New Mexico Nova Scotia New South Wales Northern Territory Northwest Territories New York...Pennsylvania Queensland Rhode Island South Australia South Carolina South Dakota Saskatchewan Tasmania Tennessee...(Wales) Aberdeen (Scotland) Aberdeen (South Africa : District) Aberdeen Angus cattle Aberdeenshire (Scotland)...Abitibi (Quebec : Regional T2--714 134 County Municipality) Abitibi, Lake (Ont. and T2--713 142 Quebec) |
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| Aerial view of Main-Barton open pit, Jundee gold mine, WA, viewed from the east, June 1997. The pit is...RossCo Print Factory 4/188 Plenty Road Preston South Vic 3072 iv Dedication This volume is dedicated...thanks: Australian Geological Survey Organisation Northern Territory Department of Mines and Energy Australian...Department of Natural Resources and Environment New South Wales Department of Mineral Resources Western Australian...each State, and then in sequence from north to south. The deposit sites are shown in the end paper maps |
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| for Nova, Val? Nuys, California. The pear-shaped diamond (2.71 ct) ring is courtesy o f Tivol lewelers,...fracture filling in diamonds. Long a sacred icon, diamond has joined its fellow gems as the object of an...fracture filling on the longterm viability of the diamond market, perception is often reality in the minds... and Clarity E~diance~l Diamond House (a subsjdi(11yof Coldma11 Oved Diamond Co,),Like the Yehuda treatnlent...teinperatiires (presuinably iii~dervacuuinl to prevent diamond l > u r i ~ i i ~cooledl g)~ and-last-cleaned again |
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| has been made in the Republic o f Mali, western Africa. The lead article in this issue characterizes these...n~etamorphicdeposits in the Republic of Mali, western Africa. These garnets, primarily yellow-green to brown...From Kayes) one must travel by jeep) or bashe (the local term for bush wagon or taxi]! to cover the remaining...the Kayes Region of the Republic of Mali, western Africa. (Adapted from: Institut Geographique National-France...stronger yellow component than tsavorites from East Africa and transparent green chromium-bearing grossulars |
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| conditions. The growing of the beryllium LONDON DIAMOND REPORT The Gem Testing Laboratory minerals'...Novosibirsk, 39-53 (in Russian) Diamond grading service established in 1980 Each diamond graded by three experienced...clarity Whether buying or selling, the London Diamond Report assures the prestige of your stone The...reported for a melt of Li 2 Mo0 4 in K 2 Mo0 4 (Cape et al, 1976). After polymerization, the spectrum...2 0 . Journal of Chemical Physics, 41(1), 215-25 Cape, T.W., Maroni, V.A., Cunningham, P.T., and Bates |
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| Petroleum Geology and Geophysics University of Adelaide South Australia 5005 Australia and R.D. Miiller School...School of Geosciences University of Sydney New South Wales 2006 Australia a THE GEOLOGICAL SOCIETY OF AMERICA... K.C. Hill and R. Hall Collision tectonics of northern Papua New Guinea: key field relationships GCIIOHOMREW...deeper layer to 200-250 km with dominantly northâ-south-oriented anisotropy. Anisotropy in the deep lower...north-northwest at around 5 cm/y. In contrast, the northern margin of the plate in Papua New Guinea does show |
 | Gordon, S.M., Little, T.A., Hacker, B.R., Bowring, S.A., Korchinski, M., Baldwin, S.L., Kylander-Clark, A.R.C. (2012) Multi-stage exhumation of young UHPâHP rocks: Timescales of melt crystallization in the DâEntrecasteaux Islands, southeastern Papua New Guinea. Earth and Planetary Science Letters, 351. 237-246 doi:10.1016/j.epsl.2012.07.014 | Journal (article/letter/editorial) |
| 1016/j.epsl.2012.07.014 Smith, 1984). Even rarer diamond inclusions suggest that crust locally reached even...paper) beneath an island arc (variously called the Cape Vogel, Dabi or Inner Melanesian arc). The convergence...2012), consistent with the plutons representing local melts of the host gneisses. The eclogites that are... 2), samples were collected from the north and south ďŹanks of the dome, including both the carapace and...extracted for CA-TIMS analysis from an eclogite on the south ďŹank of Mailolo dome, about 15 km east of the UHP |
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| Craft The Museum of the Geological Survey of South Africa................................189 by A. de...Harris Monazite and caldoancylite from the Foote mine, North Carolina by J. S. White & J. E. Nelen 203...(1 inch) on antlerite crystals from the Southwest mine, Bisbee, Arizona. For more information on this recent...to fabulous exhibits of Red Cloud mine wulfenite, NâChwaning mine rhodochrosite, French pyromorphite...6-12 cm, Adamite with Hemimorphite from the Ojuela mine, pale green and purple Naica fluorites in small |
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| peridotite xenolith from the Monastery kimberlite in South Africa. Polarizers are only partially crossed to allow...(+44) 20 7631 5500. Other countries may have a local reprographic rights agency for payments. Derivative...Geochemistry has also been propelled into the arena of local, regional, and global anthropogenic problems. The...Center, Houston, TX, USA J. G. Ryan University of South Florida, Tampa, FL, USA S. B. Shirey Carnegie Institution...underlying Archean crustal sections of southern Africa, Siberia, and North America. Because the degree |
