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| Nickeliferous Archean Madziwa Igneous Complex, Northern Zimbabwe: Petrological Evolution, Magmatic Architecture...zircon age of 2684 Ma. Other dikes are made up of diorite and/or ferrodiorite; in places, the dioritic rocks... am bia 30°E 32°E 100 km Fig.2 Eo M P Zimbabwe craton E Harare Mr Mutare 19°S Bulawayo ...Introduction The Madziwa Igneous Complex in northern Zimbabwe comprises a regional group of nickeliferous, mafic-ultramafic...principal causal role in sulfide segregation at Madziwa mine and the camp was later cited as a type-example of |
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| along the shearzoneare, Jane,Bluff, Fairview, Empress,and Victoria. The total productionof copperfrom...of plutonicrocks,mainly granodioriteand quartz diorite which were intruded at the closeof the JurassicPeriod...SalmonRiver, Premier Mine, Engineer Mine of Atlin, Bear River, Dolly Varden Mine o.f Alice Arm, Hazelton...schist from quartz diorite. ø 4. Intrusion of gabbro dikes. 3. Intrusion of quartz diorite (Britannia sills)...Vertical Sectionof Fairview Mine. Theargillaceous quartzite intheJane mine usually carries the mineralization |
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| \J 9° 22' N. and long. 76° 37' E.) in a kind of diorite. In the hand-specimen the mineral appears as violet...presence of radio-active substances. I kept an Ilford Empress photographic plate exposed in a dark box to a crushed...of the Black Mine. Professor W. G. Feamsides.—Underground Contours of the Barnsley Mine. Joint Meeting...Hollows in the Surface of the Mountain Limestone District of Derbyshire and Staffordshire. Dr. P. G. H.... 9° 22′ N. and long. 76° 37′ E.) in a kind of diorite. In the hand-specimen the mineral appears as violet |
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| .ered andesite porphyry dikes. ____________ _ Diorite ___________ - __________ - __ - __ - __ ----Cenozoic...lead-silver-zinc district ______________ _ Geochemical prospecting ___ ._ ____________ _ Future of the district ___________________...___________________ _ Zinc Hill district ___________________________ _ Lee district _______________________________...Hills-----------------------------------Santa Rosa mine ______________________ _ Deposits in the Talc City...acknowledgments _________ _ Deposits in the Darwin district ______________ _ Geology~------------------------------ |
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| August 1986, the development of a major new platinum mine was announced in South Africa (E.C.I. Hammerbeck...chromitite layer are to be exploited in the new mine to a depth of 2,700 meters below the surface. This...felsic volcanics and clastic sediments intruded by diorite. In September 1986, it was reported (Todd, 1986)...-----------------5. Proportions of total vvorld mine production of platinum-group metals accounted for...------------------------6. Platinum-group-metal mine production in countries having major deposits and |
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| underlyingstratigraphicevolutionarycontrol. The Empress nickel-copperdeposit, which has Ideally, Arcbe...amphibolites(orginally pyroxenites), norire, and diorite. The ore minerals presentin the body, in order... R. ANHAEUSSER ! I O, 5,010, km , / ! / Empress*, ',.,. RHODESIA Selukwe ß / "NICKEL-COPPER...Asbestos x Gaths Asbestos KingAsbestos TrojanNickel Empress Copper-Nickel •t. !SWAZILAND! t., r'L.... i ...Rhodesia(locatedin the Midlands greenstonebelt, intrusive granites. The Scotia Talc Mine in the halfway betweenthe |
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| Premier Mine K Kimberley Ko Koffiefontein J Jagersfontein I Madziwa II III Trojan Mine Empress...Empress Mine IV Tati V VI VII VIII IX Magogaphate Selibe Vlakfontein Barberton Insizwa FOCI OF MANTLE...work indicates a Precambrian age for the Premier Mine kimberlite (Van Zyl, 1968). However, the presenceof...recognizedin West Africa and in Russia (Bardet, 1965). district. association between crustal weaknesses and mafic...pre-KalahariBedsgeologyin the region. granodioriteor diorite. An orogenicenvironment by the LimpopoTrend may |
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| RhodesiaCopperbelt................................... Mufulira Mine ................................................................................... Roan Antelope Mine ............................................. 909............................ 915 920 922 923 The Mine Series ...........................................mineral exploration for RhodesJanSelection Trust Mine Services Ltd., and from 1962 to 1963 he was SeniorGeologistfor...KATANGA SYSTEMS Kundelungu Series BASEMENT SYSTEMS Mine Series KATANGA SYSTEM Undifferentiated IGNEOUS |
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| 20 in favour of lead against lake formation Empress Claim and neighbourhood, Bloomfield. Tunnel,...AVinckler's, the Xorth and South Bloomtield, and Empress Claims were discovered and opened up. The Homeward...week being obtained in the wet season. At the Empress (Xiue Mile) actual sluicing operations commenced...introduced hydraulic sluicing at the I>ine Mile (Empress) Claim. scheme for conveying water to the nozzles...have to be siphoned. When the overburden at the Empress Claim reached a thickness of loO to 160 feet sluicing |
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| Rhodesia. The occurrenceof gold at the Vubachikwe gold mine has been studied together with samplesof mineralized...Connemara, Empress, Marvel, Nelly 404, Pickstone, and Sherwood Starr mines. At the Vubachikwe mine the orebodies...Both he and Kleinot (1963), who later mappedthe mine in further detail,consideredthe gold to be of h...wasfaciI58 A detailed examination of the Vubachikwe mine has been made, and the stratigraphic situation...EXPLANATION The Vubachikwe Mine Geological setting The Vubachikwe mine is situated in the Gwanda greenstone |
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| tourmaline crystals from William Larson’s Stuart Mine in the Pala Mountains, California (USA). Next to...quartz from the hydrothermal deposits of the Muzo Mine, Colombia. Collection: Mineralogical Institute of...examples of igneous rocks of this type are granite, diorite, and gabbro. Depending on magma composition, the...morganite and white quartz from the pegmatite of Queen Mine, San Diego County, California (USA). Collection:...this ornamental gem owes its name. It comes from a mine near Ylamaa, Finland. Museum a. d. Felsenkirche |
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| BULLETIN 9 GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT SAGUACHE COUNTY COLORADO By HORACE B. PATTON.................................... 69 The Rawley mine......................................... 69 Location.................. . . . . . 69 Rock formations in mine and tunnel................... 74 Vein systems ....tunnel.......... . . . . . . . . . 86 The Antoro mine....... . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . 89 The Cora mine. . . . . . . . . . . . . . . . . . . . . . . . |
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| resources and mine production by geologic deposit type. . . 5. Distribution of cobalt resources and mine and metal...TABLES Page TABlE 1. 2. 3. 4. 5. 6. World cobalt mine production 1977-83................................1983................ v S 6 9 10 13 14 16 8. Mine production of cobalt in 1983 by geologic deposit...production of cobalt-in-ore, 189~1982.......... Mine production of cobalt in 1983 by economic class of...example those of New Caledonia or the Sudbury district (Canada), have made little effort to evaluate |
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| (sulphate of lead). Tombstone district, Cochise County; Gila County, at Lost Gulch Mine, near Globe; Mohave County...County, in Mineral Park;; Pima County, in Mammouth Mine, Schulty; Yavapai County, in ores of Bradshaw Mountains;...Mountains; Yuma County, in Castle Dome district; common in silver veins. ANTIMONY ORES. See Jamesonite...Cruz County, at Montezuma and Empress of India mines, Tyndall district; Yavapai County, in ores of Bradshaw...Mountains; carries gold and some silver at McCabe mine. ASBESTOS (chrysotile ). Coconino County, associated |
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| interest in the geo logy and mineral resources of Zimbabwe which followed the removal of United Nations sanctions...original Bulletin is the insertion of Table IIIA, Zimbabwe Mineral Production and Value, on page 114A. Due...for views of Wankie Colliery and the Trojan nickel mine, and to the Photographic Section of the Ministry...near Salisbury. facing page 23 IV Trojan Nickel Mine, near Bindura. facing page 33 V The Great Dyke...Complex. VI Chrome seam in the Great Dyke, Vanad Mine. VII Lower Karoo Landscape. No. 1 Colliery, Wankie |
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| GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO BY W. S. BURBANK WITH A SECTION ON...Geography _ ______________ ___-__-__ Situation of the district _ _ _________________ Topographic features. ....Previous geologic and topographic work in the district. ____ ___________._-__-______--__. Field work...____ Alteration associated with the porphyry. Diorite and monzonite dikes____________ Intrusive bodies...Gulch____.._____-----Sosthenes Gulch and Antoro mine __..-.-_ Vicinity of Round Mountain ____________ |
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| geographical links with the ca 2.4 Ga Sebanga Poort Dyke (Zimbabwe), the Ringvassoy (Kola-Karelia) and du Chef dykes...considered a smaller analogue of the Great Dyke of Zimbabwe (Campbell et al., 1970), due to its funnel-shape...tholeiitic quartz dolerite, gabbro and quartz diorite. Wingate et al. (2005) pointed out that these 1210...consist of dolerite or gabbro and locally quartz-diorite. About 200 to 300 km E and NE of Perth, the Wheatbelt...contains very poorly-exposed, roughly E-trending diorite and dolerite dykes with zircon ages of 1202 ± 13 |
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| and 1970s were decades of mineral exploration and mine development unprecedented in the northwestern Cordillera...the 30 years since the opening of the Bethlehem mine in late 1962, porphyry mines in British Columbia...for survival of the Bell mine in fascinating detail. The paper on the Brenda mine presents insights into... Endako has been the major molybdenum producing mine in British Columbia, operating since 1965. Other...developers, through operators and esearchers, to mine closers and reclaimers. Where possible the Board |
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| actively involved in mining and exploration in the district during the decade of the seventies. It includes...development and mining. Earlier reports on the district by McConnell and Kindle emphasized geology; this...development. The report was written when mining in the district was at its peak; it will be useful to those contemplating...development in the Copper Belt and for comparing the district to others. Mining in the Copper Belt may cease...the Arctic Chief deposit (Sop Geological plan and mine workings of the Pueblo deposit 24. Geological cross-section |
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| contact region between Andover granite and Salem diorite. The pegmatite is about iy2 feet in width. The...beryl—in quartz and feldspar. "Nearby, in th Salem diorite, I found some pegmatites. The quartz is white and...smoothed by the glacier appear as alterations on the diorite. "These outcrops are road cuts on the southeastern...half granite and half diorite. The central road cut consisting only of diorite contains numerous pegmatites...allanite bearing quartz. The third road cut, also of diorite, has the epidote. "I have also found a large piece |
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| and protégé Julius Caesar. 56 Austria’s Unhappy Empress Married at age 16 to emperor Franz Josef, Elisabeth...ELISABETH, FOUNDED IN 1898 IN MEMORY OF ELISABETH, EMPRESS OF AUSTRIA 4 NEWS The discovery of a cavernous...icehouse discovered in London’s Regent’s Park district. RIGHT: Researchers explore the icehouse’s 31-foot-deep...investigation in the city’s wealthy Regent’s Park district when they made a chilling discovery: a massive...Karnak. Made of blocks of red quartzite and gray diorite, the chapel housed the sacred bark of Amun when |
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| the Main Sulfide Zone (MSZ) of the Great Dyke, Zimbabwe—see Maier (2005) for a summary of global occurrences... VB S S S S S MSZ S J Magnetite-gabbro-diorite Pyroxenite-norite Peridotite S-poor, undeformed...cratons include the Kaapvaal (mainly PGE deposits), Zimbabwe (Ni–Cu and PGE), Yilgarn (Ni–Cu only), Superior...southern and central Africa, including the Kaapvaal, Zimbabwe, Tanzania and Congo cratons; and North America...world PGE reserves (Bushveld—Kaapvaal, Great Dyke—Zimbabwe). Other large 844 Miner Deposita (2011) 46:841–857 |
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| USSR Academy of Sciences, Chernogolvka, Moscow district, U . S . S . H . J. Foden, Bureau of Mineral Resources...Rhodesia, Box M.P. 167, Mount Pleasant, Harare, Zimbabwe. R.W. Ojakangas, Department of Geology, University...O. B o x . MP. 1 6 1 , Mount Pleasant, Harare, Zimbabwe. B.F. Windley, Department of Geology, University...MINERALISATION IN THE EARLY PRECAMBRIAN CRUST OF ZIMBABWE J.F. Wilson and T.H.C. Nutt 555 MINERAL OCCURRENCES...631 LITHIUM PEGMATITES OF AMARESHWAR, RAICHUR DISTRICT, KARNATAKA, INDIA T.C. Devaraju, N. Rajshekhar |
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| Opal Precious beryl Argentina Rhodochrosite Zimbabwe Peridot Chrysoberyl Precious beryl Emerald...the Superpit is Australia’s largest open pit gold mine and is one of the largest open pit mines in the...years later as a wedding gift from Napoleon III to Empress Eugénie, who was fascinated by, and modeled her...Antoinette is born in Vienna, 15th child of the Empress of Austria, Maria Theresa 1774 Louis Auguste takes...earrings remain in the French royal family 1870–72 Empress Eugénie is thought to sell the earrings to Duchess |
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| of vug. Reflected light, in air, 183 X. Smuggler mine; c. Galena (gn) replaced by hessite (hs) which was...gold (Au). Reflected light, in air, 218 X. Nancy mine; d. Tetrahedrite (td) interstitial to pyrite (py)...quartz (qz). Reflected light, in air, 153 X. Croesus mine; f. Single crystal of tellurium (Te) was largely...visible. Reflected light, in air, 157 X. Emancipation mine; g. Subhedral, bladed tellurium in penecontemporaneous...quartz. Reflected light, in air, 28 X. John Jay mine; h. Sylvanite (sv) and native tellurium (Te) in |
