 | | Journal (article/letter/editorial) | | Rifted, Craton, and Mobile-Belt Environments from Zimbabwe and Implications for Diamond Potential a Peter...Sciences , University of Cape Town , Rondebosch, 7700, South Africa Published online: 06 Jul 2010. To cite this...Rifted, Craton, and Mobile-Belt Environments from Zimbabwe and Implications for Diamond Potential, International...Rifted, Craton, and Mobile-Belt Environments from Zimbabwe and Implications for Diamond Potential PETER R...Sciences, University of Cape Town, Rondebosch 7700, South Africa Abstract Three major components with different |  | Smith, Chris B., Pearson, D. Graham, Bulanova, Galina P., Beard, Andrew D., Carlson, Richard W., Wittig, Nadine, Sims, Keith, Chimuka, Lovemore, Muchemwa, Ellah (2009) Extremely depleted lithospheric mantle and diamonds beneath the southern Zimbabwe Craton. Lithos, 112. 1120-1132 doi:10.1016/j.lithos.2009.05.013 | Journal (article/letter/editorial) | | lithospheric mantle and diamonds beneath the southern Zimbabwe Craton Chris B. Smith a,â, D. Graham Pearson b...Exploration, Johannesburg, South Africa g Murowa Diamonds, Harare, Zimbabwe b c a r t i c l e i n f...Peridotite xenoliths Diamond Kimberlite macrocrysts Zimbabwe a b s t r a c t Inclusion-bearing diamonds, mantle...of the lithospheric mantle beneath the southern Zimbabwe Craton. The diamonds are mostly octahedral, moderately...contrast to the Kaapvaal mantle lithosphere. The Zimbabwe mantle assemblage has been only slightly affected |  | | Journal (article/letter/editorial) | | Southdale, 2135, South Africa c De Beers Group Services, PO Box 47, Kimberley, South Africa d De Beers...Following the discovery of diamonds in river deposits in central South Africa in the mid nineteenth century...discovered in South Africa and Botswana in particular, but also in Lesotho, Swaziland and Zimbabwe. A century...small and marginal, such as the Frank Smith Mine in South Africa. They include large diatremes such as...with the discovery of the older diamond mines in South Africa such as KofïŹefontein, Jagersfontein and the |  | | Journal (article/letter/editorial) | | (Fig. 1) is made up of the Archean Kaapvaal and Zimbabwe cratons, separated by the Limpopo Belt. It is...break-up of Gondwana (Brandl and de Wit, 1997). 3.1. Zimbabwe Craton Kusky (1998) recognised two main structural...contrasts in deformational style with the Kaapvaal and Zimbabwe Cratons and appears to be an ancient microcontinent...direct result of collision between the Kaapvaal and Zimbabwe cratons 2.7â 2.6 Ga ago (Limpopo Orogeny). It...tonalite composition with ages of 3.8 Ga (Sand River Gneiss; Tankard et al., 1982; Barton and Key, 1981; |  | | Journal (article/letter/editorial) | | These include metasedimentary diamondbearing felsic gneiss of the Kokchetav massif in northern Kazakhstan...diamonds and diamondiferous eclogites from Yakutia, South Africa, and Venezuela (Sobolev et al., 1972, 1997...from diamondiferous eclogite of the Roberts Victor mine (sample RV-15) containing oriented corundum (dark)...samples of diamondiferous eclogites from Yakutian and South African kimberlites also were investigated for comparison...diamondiferous kyanite eclogite from the Roberts Victor mine, South Africa (RV-15) revealed much higher Al2O3 contents |  | | Book | | Verlag, photographs 2; 4. Geological Society of South Africa, photographs on ps 62; 193; 217. Harry N...Seychelles Sierra Leone Socotra (Yemen) Somalia South Africa Sudan Swaziland Tanzania Togo Tunisia Uganda...Sahara (under Moroccan administration) Zambia Zimbabwe 142 146 148 152 156 160 162 168 172 176 180 186...Principe, Sierra Leone, Somalia, Sudan, Uganda and Zimbabwe. Negative economic impacts that resulted from...also felt by Angola, Namibia, Rwanda, Uganda and Zimbabwe. The long-term implication of the AIDS epidemic |  | Macdonald, Ray, BagiĆski, BogusĆaw, Belkin, Harvey E., Stachowicz, Marcin (2019) Composition, paragenesis, and alteration of the chevkinite group of minerals. American Mineralogist, 104 (3) 348-369 doi:10.2138/am-2019-6772 | Journal (article/letter/editorial) | | inclusions in diamond in a kimberlite at Ranch River, Zimbabwe, grew under mantle P-T conditions (Kopylova...perrierite-(La) was described from the Eifel volcanic district, Germany, by Chukanov Figure 4. The main compositional...perrierite was described from a quartzofeldspathic gneiss of the Archean Napier Complex, Antarctica, by Belkin...silicateâcarbonate assemblages of the Vishnevogorsky complex, South Urals (Makagonov and Muftakhov 2016). Niobium is...inclusions in diamonds from the River Ranch kimberlite pipe in Zimbabwe. They gave the formula as (Ce2 |  | | Journal (article/letter/editorial) | | BRODERICK .\W^ D. PI.OWES 65 Landscape evolution in Zimbabwe from the Permian to present, with implications...(Pvt.) Limited, Box CH399. Chisipite. Harare. Zimbabwe. e-mail: andy.m()ore@info.b\v F.P.D. (Woody)...Sciences, Liniversity of Cape Town, Rondebosch 7701, South Africa. e-mail: ienton.cotterill@uct.ac.za T. Broderick...Broderick 19 Jenkinson Road, Chisipite, Harare. Zimbabwe e-mail: makari@zol.co.zw D. Plowes 49 Arcadia...Society of South Africa ABSTRACT Evidence is presented to model drainage evolution -Acmss Zimbabwe since |  | | Journal (article/letter/editorial) | | Somabula diamond-bearing alluvial deposit, Central Zimbabwe Andy Moore Somabula Explorations (Pvt) Limited...Limited, Box CH399, Chisipite, Harare, Zimbabwe. e-mail: andy.moore@info.bw John Moore Geology Dept, Rhodes...Grahamstown 6140, South Africa. e-mail: J.Moore@ru.ac.za © 2006 December Geological Society of South Africa ABSTRACT... located to the southwest of Gweru in central Zimbabwe, have long presented an enigma in terms of their...interpreted to reflect deposition in a braided river system. The initial pulse of upper Karoo sedimentation |  | | Journal (article/letter/editorial) | | the Venetia kimberlite cluster â a case study of South African kimberlite maar-diatreme volcanoes Stephan...GeoScience Centre, PO Box 82232, Southdale 2135, South Africa e-mail: Stephan.kurszlaukis@debeersgroup...Mines Limited, Premier Mine P.O. Box X1015, Cullinam 1000, South Africa, South Africa e-mail: wayne.barnett@debeersgroup...barnett@debeersgroup.com © 2003 Geological Society of South Africa ABSTRACT The paper summarises an investigation...describe a close structural control on the location SOUTH AFRICAN JOURNAL OF GEOLOGY, 2003, VOLUME 106, PAGE |  | | Journal (issue) | | October 1998 ISSN: 1355-4565 Blue euclase from Zimbabweâa review Susan Stocklmayer (nĂ©e Anderson), FGS...ABSTRACT: Blue euclase from Mwame, Hurungwe District, Zimbabwe, which was first collected in the late 1970s...photomicrographs. Keywords: euclase, inclusions, pegmatite, Zimbabwe Euclase in Africa Introduction 174 uclase...from sources in Colombia, Russia, Tanzania and Zimbabwe; spectacular crystals have been described from...the gemmological interest in the crystals from Zimbabwe is for the deep azure colour. Tanzania Spencer |  | | Report (issue) | | RESOURCES District 25 Summaries 25 Coyote Mountains district Fish Creek Mountains district Southeastern...Mountains district _ Cargo Muchacho district Pa lo Verde district Paymaster Commodity district 31 Discussions...Hedges, circa 1900 Main vein pit, Pioneer manganese mine East shore of Lake Cahuilla West shore of Lake Cahuilla...nonmarine Plio-pleistocene clastic by Chuckwalla gneiss rocks volcanic . ii 7 14 18 19 20 21 21 ...province of Paleozoic(?) metasedimentary rocks and gneiss, which is comprised predominantly have been intruded |  | | Journal (article/letter/editorial) | | Keene LP77-211-9 750gf Kfs 13.3 syenitic gneiss, 7.0 m from LP77-211-17, Keene LP77-211-10 750gf...wollastonite gneiss, 0.3 m from LP77-211-17, Keene LP77-211-17 750gf qt 13.0 granitic gneiss with graphite...Weston Mines NC78-2 640gf qt 10.8 pegmatitic gneiss 45 m from marble (NC78-3) Marbles/calc-silicates...overlying anorthosite, at contact with granite gneiss LP8-2 730gf 16 cc gr 18.3 -2.9 -5.8 LP77-201...gr 19.8 -2.9 -5.7 marble, 1 m from granitic gneiss LP200 760gf 70 cc gr 23.3 1.4 -1.2 marble |  | | Journal (article/letter/editorial) | | namely: a Pennsylvanian granitic gneiss, north-central and south part of 1517 R. N. 1518 CLAYTON...19.210.8 Atianta, GA; a Precambrian hornblende gneiss, just east of Forsyth. GA: a Precambrian oligoclase-biotite...size of Cretaceous shales (Pierre) of Montana and South Dakota to two depths of shale in the Gulf of Mexico...sample T259547 (Sharon Springs Shale), collected in South Dakota. The difference between the two Pierre Shale...to the source of sediments in the west, and the South Dakota sample coming from the central basin of the |  | | Book | | associated alkalic basaltic rocks from Pishin District, Pakistan.4 Reasons of variations of individual...prognosis and prospering of diamond's host rocks on the south of Siberian platform.38 The petrology and geochemistry...of a polymict xenolith from the Kimberley Area, South Africa......40 Eclogites from the Mir kimberlite...megacrysts from the Lace (Group II) kimberlite, South Africa..........52 Isotope composition of the sub-continental...Southeastern Raipur kimberlitic field, Raipur District, Madhya Pradesh, Central India.106 Experimental |  | | Journal (issue) | | discovered in 1995 in the Booyo area, about 250 km south-west of Seoul, Korea (Figure 1), and is being mined...deposit consists of Precambrian schist and granitic gneiss, Jurassic conglomerate A CHINA ~ S V / O ^...GEISS BHBHI GNEISS PRECAMBRIAN CHIST SCHIST Âź Booyo Nokok M.inc (*sry) Booyo Nokok Mine serpentine...Non-precious extracted from the mine. the Booyo BooyoNokok Nokok mine. from (Chogyeri Formation) and sandstone...3 and 20 cm. At present 2 adits are open at the mine. They are at 10 metres vertical interval and are |  | MAIER, W. D., ANDREOLI, M. A. G., GROVES, D. I., BARNES, S.- J. (2012) PETROGENESIS OF CU-NI SULPHIDE ORES FROM O'OKIEP AND KLIPRAND, NAMAQUALAND, SOUTH AFRICA: CONSTRAINTS FROM CHALCOPHILE METAL CONTENTS. South African Journal of Geology, 115 (4) 499-514 doi:10.2113/gssajg.115.4.499 | Journal (article/letter/editorial) | | SULPHIDE ORES FROM OâOKIEP AND KLIPRAND, NAMAQUALAND, SOUTH AFRICA: CONSTRAINTS FROM CHALCOPHILE METAL CONTENTS...maier@oulu.fi M.A.G. ANDREOLI South African Nuclear Energy Corporation, South Africa; School of Geosciences...University of the Witwatersrand, Johannesburg 2000, South Africa e-mail: marco.andreoli@necsa.co.za D.I....Society of South Africa ABSTRACT The petrogenesis of sulphide ores in the Oâokiep district has remained...and until the recent closure of the Carolusberg mine, the sulphide ores in the Springbok area of Namaqualand |  | | Journal (issue) | | Update on Emeralds from the Sandawana Mines, Zimbabwe J.C. (Hanco) Zwaan, Jan Kanis, and Eckhard J....Caspi 122 Gem Rhodochrosite from the Sweet Home Mine, Colorado Kimberly Knox and Bryan K. Lees pg. 99...from the Sweet Home mine near Alma, Colorado. Current exploration and minig at this mine, as well as the...north of San Diego and only 100 miles (160 km) south of GIAâs former home in Santa Monica. The spacious... UPDATE ON EMERALDS FROM THE SANDAWANA MINES, ZIMBABWE By J. C. (Hanco) Zwaan, Jan Kanis, and Eckehard |  | | Book | | state demand. them the Pau!inskill tile best :River, and the material has been are to be found in...The Cranberry Inlet opposite the mouth of Toms :River was fi)rmerly a place of safety iu storms for vessels'coming...Brooks, and is _ fine specimen of a survey of a district contaiuing veins of magnetlc irou ore. The map............................................ 64 Gneiss ................................................. Localities 132 IV.--I=[UD6ON ........... :RIVER : ...................................... SLATE |  | | Journal (article/letter/editorial) | | salinity as a result of devolatilization of subducted South Pennic rocks. During the Paleogene orogeny under...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...intrusive igneous rock chemically equivalent to basalt. Gneiss medium to coarse foliated and largely recrystallized...Essexite Evaporite Ferricrete Foskorite Foyaite Gabbro Gneiss Granite Granodiorite Granophyre Granulite Greywacke...you look for a mine look near a mineâ. This includes the imperative âif you look for a mine look for smelting | | | Journal (article/letter/editorial) | | salinity as a result of devolatilization of subducted South Pennic rocks. During the Paleogene orogeny under...hanging wall. During a subsequent mining period, the mine was re-opened to recover sideritic parts of the...intrusive igneous rock chemically equivalent to basalt. Gneiss medium to coarse foliated and largely recrystallized...Essexite Evaporite Ferricrete Foskorite Foyaite Gabbro Gneiss Granite Granodiorite Granophyre Granulite Greywacke...you look for a mine look near a mineâ. This includes the imperative âif you look for a mine look for smelting |  | | Report (issue) | | stone hammers, and called his claim the Stone Hammer mine. This find aroused so much interest that the San...circumstance the location was named the Stone Hammer mine. "The State Slining Bureau reported at about the...region between Death Valley and Goff's Mining District, nearer the former, and that good samples were...the museum of the Bureau. * * * "The turquoise district, as described by Mr. Eisen and others of the party...AND GEOLOGICAL SKETCHES 1956] 15 the west or south, a strange tribe searching for precious stones among |  | | Book (volume) | | Montana, Nebraska, North Dakota, â ; Oregon, South Dakota, Washington, and Wyoming ~ AllanW Eckert...Georgia, Kentucky, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, and West Virginia...Missouri, Montana, Nebraska, North Dakota, Oregon, South Dakota, Washington, and Wyoming VOLUME 4: THE SOUTHWESTERN...Missouri, Montana, Nebraska, North Dakota, Oregon, South Dakota, Washington, and Wyoming by Allan W. Eckert...Missouri Montana Nebraska North Dakota Oregon South Dakota Washington vi Contents Wyoming 5505 |  | | Journal (article/letter/editorial) | | terrains mainly include eclogite, marble, (para)gneiss, amphibolite and ultramafics. The protoliths of...et al., 1995). They also decrease from north to south in the Dabie terrain: P > 35 kbar and T = 750-850°C...compared with P = 20-25 kbar and T = 580-650°C in the south (e.g., Wang et al., 1990, 1992; Okay, 1993; Wang...garnet, phengite, rutile, quartz/coesite in (para)gneiss. All these UHP metamorphic rocks show different...1995). The eclogite blocks enclosed within (para)gneiss or marble are generally amphibolitized in the peripheries |  | | Report (issue) | | DESCRIPTION OF THE ORE DEPOSITS IN THE ROCKY BAR MINING DISTRICT 26 RECONNAISSANCE GEOCHEMISTRY 30 Analytical...Location of Mines and Prospects in the Rocky Bar District (Plate 1, Anderson, 1943) 27 Reconnaissance...AND ACCESS The study area is north of the Snake River Plain and the Mt. Bennett Hills in Elmore County...Roaring River / Ranch Moun ta i n ~ ----:Elk Creek ~ROCkYBar f10un ta i n of the Boise River Reservoi...the first major mountain range north of the Snake River Plain in this part of Idaho. Elevations range from |
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