 | | Journal (article/letter/editorial) | | Mineral inclusions in diamonds from the River Ranch kimberlite, Zimbabwe Received: 11 January 1995 / Accepted:...diamonds from the River Ranch pipe in the Late Archean Limpopo Mobile Belt (Zimbabwe), are phases of harzburgitic...chemistry demonstrates a limited overlap with River Ranch kimberlite macrocrysts: the DI garnets are more...DI spinel and garnet are more Mg-rich. Most River Ranch diamond inclusions were equilibrated at T = 1080Ā±...inclusions from all other kimberlites studied, the River Ranch DI have a lithospheric aĀnity and therefore indicate |  | | Journal (article/letter/editorial) | | diamonds to the Earthās surface. Introduction Periclase + enstatite and forsterite + quartz (and its high-pressure...entire MgOāSiO2 system, it is only possible for periclase L. Liu Institute of Earth Sciences, Academia...to coexist when Mg2SiO4-spinel breaks down to periclase + MgSiO3-perovskite at pressures greater than...20ā30 mol% of FeO by Liu (1976b), and therefore periclase is replaced by ferropericlase in the system MgOāFeOāSiO2...Australia Monastery, S. Africa Sloan, Colorado Periclase + magnetite Ferropericlase (2)a, enstatite Moissanite |  | Kaminsky, F., Zakharchenko, O., Davies, R., Griffin, W., Khachatryan-Blinova, G., Shiryaev, A. (2001) Superdeep diamonds from the Juina area, Mato Grosso State, Brazil. Contributions to Mineralogy and Petrology, 140 (6) 734-753 doi:10.1007/s004100000221 | Journal (article/letter/editorial) | | diamonds (sample no.) Monomineral inclusions Fe-periclase 20 (incl. three grains in no. 3Ā±15, and two grains...Associations Fe-periclase+ilmenite Fe-periclase+spinel Fe-periclase+``olivine'' Fe-periclase+SiO2 CaSi-perovskite+Ni...1989), KoĀefontein (Moore et al. 1986), River Ranch, Zimbabwe (Kopylova et al. 1997), Birim, Ghana (Stachel...patterns shown by majoritic garnets from the Monastery Mine (Moore et al. 1991), but similar ĀÆat patterns were...thousands of diamonds from Siberia, Arkhangelsk, South Africa, Venezuela and Brazil. Nitrogen-free and |  | | 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 Kofļ¬efontein, Jagersfontein and the |  | | Journal (article/letter/editorial) | | solid solution and the other with a single ferro-periclase inclusion, suggest the contribution of a small...Earth mantle. The study of diamonds from the Mwadui Mine has the scope to provide data on the state of the...Africa (Dawson 1992). The Mwadui Mine (formerly known as Williamson Mine) in Western Tanzania is the largest...1977; Raber 1978; Shee 1980 unpublished). The Mwadui Mine preserves crater facies, including lake beds, a...low CaO region found for example, at the Finsch Mine diamonds (Harris and Gurney 1979). In general major |  | | Journal (article/letter/editorial) | | Dept. of Geology, Rhodes University, Grahamstown, South Africa. African Queen Mines Ltd., Box 66 Maun Botswana...bots@gmail.com Ā© 2014 December Geological Society of South Africa ABSTRACT Type II (N-poor) diamonds do not...recovered from an Indian alluvial source, and now SOUTH AFRICAN JOURNAL OF GEOLOGY, 2014, VOLUME 117.2 PAGE...diamond recovered from the Cullinan kimberlite, South Africa. Note the irregular morphology of this stone...Koffiefontein kimberlites in South Africa (King et al., 1998). However, the Karowe mine, in the Orapa kimberlite |  | Macdonald, Ray, BagiÅski, BogusÅaw, 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...silicateācarbonate 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...much higher Cr content. The inclusions in the River Ranch kimberlite may have been formed during a K-metasomatic |  | | Journal (article/letter/editorial) | | Grahamstown, 6140, South Africa. e-mail: andy.moore@info.bw Ā© 2009 March Geological Society of South Africa ABSTRACT...the 3106 Cullinan, recovered from the Premier Mine, South Africa (Williams, 1932), as well as gems like...kindly provided by Debbie Bowen of Letseng Diamond Mine, illustrates a selection of Type IIa stones from...the Letseng Type IIa stones do not fluoresce. SOUTH AFRICAN JOURNAL OF GEOLOGY, 2009, VOLUME 112 PAGE...IIa diamonds from Letseng Mine, curtesey of Debbie Bowen of Letseng Diamond Mine. Large stone is the 603 |  | | Journal (issue) | | Ch'unch'on). Annual production of the nephrite mine (the Daeil Mine) is reported to be approximately 80 000-90...map of nephrite mine area, Chuncheon, Korea. Occurrences The geology of the nephrite mine area consists...1995,24, 8 549 Fig. 3. Mine workers remove nephrite ore at the Daeil Mine, Chuncheon, Korea. The nephrite...Acknowledgements I thank the Daeil Mine for allowing access to the mine. Thanks are also due to S.E. Lee...1935b). Kabaing (Khabine), at Kin, is located a mine famous for star sapphires (see Figure 1). The sapphires |  | | Journal (article/letter/editorial) | | inclusions from De Beers Pool diamonds, Kimberley, South Africa D. Phillips a,*, J.W. Harris b, K.S. Viljoen...Consolidated 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...important De Beers Pool kimberlites in Kimberley, South Africa (28j46VS, 24j48VE). The Kimberley region...as the site of the first diamond discoveries in South Africa, the type locality for Group I (basaltic) |  | | Journal (issue) | | 1986. The occurrence of moissanite and ferro-periclase as inclusions in diamonds. Fourth International...Territories, Canada. RA ARMSTRONG AND RO. MOORE. South AfricanJournal of Geology, 101(2), 1998, 155-8....Mineral inclusions in diamonds from the River Ranch kimberlite, Zimbabwe. M.G. KOPYLOVA, J.J. GURNEY AND L...More than 99% of the small diamonds from the River Ranch kimberlite contain minerals of harzburgitic paragenesis:...of graphite cuboids from the Maksyutov Complex, south Ural Mountains, Russia. M.L. LEECH AND W.G. ERNST |  | | 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 | | ^ 'ā P r . . . I West Orange SOUTH SAN FRANCISCO PUBLIC LIBRARY 9048 00992838 7 257989 R q549...composition between acidic and basic rocks. drift mine Adit(s) driven into gravel. Characterized by the...Potholes first District of Imperial Yuma, Diego County, County, near the Colorado River about 10 miles...Then in on the western 1835; and in the Piru District, Ventura County, in the early 1840s. 1848 the...side of the Sierra From 1848 in the American River, at Sutterās Mill Nevada, changed the history |  | | 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 (article/letter/editorial) | | called Wafangdian), Liaoning Province is at the south end of the East Liaoning Uplift of the North China...Central China. In the Fuxian area, from north to south, there are three parallel kimberlite zones. The...and extends for about 275 m; the short axis is in southānorth direction and extends for about 65 m. The...lower limit of oxygen fugacity in absence of periclase from the reaction MgCO3 = MgO + C + O2 . Wang...Inclusions in diamond from the Monastery kimberlite, South Africa. In Kimberlites and Related Rocks Volume |  | | Journal (article/letter/editorial) | | Pearceite Pecoraite Pectolite Penroseite Pentlandite Periclase Perovskite (dysanalyte (Nb), knopite (Ce)) Petalite...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...you look for a mine look near a mineā. This includes the imperative āif you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is ļ¬rst and foremost recognized | | | Journal (article/letter/editorial) | | Pearceite Pecoraite Pectolite Penroseite Pentlandite Periclase Perovskite (dysanalyte (Nb), knopite (Ce)) Petalite...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...you look for a mine look near a mineā. This includes the imperative āif you look for a mine look for smelting...also for the chrome diopside found at Outukumpu mine, a mineral that is ļ¬rst and foremost recognized |  | | Journal (issue) | | case of the moldavite tektites (named after the river Moldau), the molten masses that were formed as a...determined in 43 octahedral d i a m o n d s from South Africa, Australia and North America. The N in 'high-8...Roberts Victor, Jagersfontein, Sierra Leone, Star mine, Mwadui and Alamasi. Data are used to determine...bimineralic eclogite xenoliths from the Udachnaya mine, Yakutia, Siberia, were investigated to establish...mantle history and to compare it with that of the South African craton. The aim w a s also to examine the |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g....Mt. (mount or mountain), Mts. (mountains), R. (river), Is. (island), Vole. (volcano), Penin. (peninsula)...localities of magmatic origin (in the sequence North and South America and Greenland, then Europe, Asia, Africa...pegmatitic origin in the same sequence: North and South America and Greenland, then Europe, etc. For some |  | | Book | | responsibility for authorsā errors and omissions. SOUTH AFRICA SEVENTH INTERNATIONAL KIMBERLITE CONFERENCE...Survey of South Africa) SouthemEra Resources Ltd SOCIETY SPONSORS Geological Society of South Africa (GSSA)...a Phanerozoic subduction regime in eastern New South Wales, Australia. Mantle Dynamics beneath Mongolia:...diamond. 61 Cr-poor Megacrysts from the Frank Smith Mine and the source regions of transitional kimberlites...Lithospheric Mantle anisotropy of the Kaapvaal craton (South Africa) from lattice preferred orientation analysis |  | | Book | | (mina is the Latin word for āāmineāā, and minare is Latin for āāto mineāā). Pliny the Elder, who was killed...(1998). Mineralogy. Prentice-Hall, Upper Saddle River, NJ, 484pp. Sen, G. (2001). Earth Materials: Minerals...Minerals and Rocks. Prentice-Hall, Upper Saddle River, NJ, 542pp. 11 Chapter 2 Elements, bonding, simple...with several crystals of galena from Tristate District, USA (40 mm Ć 67 mm) (courtesy O. Medenbach)....we deļ¬ne a coordinate system such as north and south poles (N and S), as well as an east-point E on the |  | Kogel, Jessica Elzea, Trivedi, Nikhil C., Barker, James M., Krukowski, Stanley T. - Eds. (2006) Industrial Minerals and Rocks (7th ed.) Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO. | Book (edition) | | . . . . . . . . . . . . . . . . . . . . . . . . Mine Safety and Health Law . . . . . . . . . . . . ....Bloomington, Indiana Stratum Resources Sydney, New South Wales, Australia Sara M. Robinson Consulting Geologist...Brick Research Center Clemson University Anderson, South Carolina James M. Barker Dennis P. Bryan New...Brick Research Center Clemson University Anderson, South Carolina TZ Minerals International Pty Ltd. West...omine, and rare-earth elements. In a lar ge diamond mine, for e xample, 50 percent o f the annual revenue |  | | Report (volume) | | Publication. Washington, D. C. Smithsonian lost. River Basin Surveys Pubs. Salvage Archeology Smithsonian...Smithsonian Institution Museum of Natural History, River Basin Surveys, Publications in Salvage Archeology. Washington... and Oxford, England. South Carolina Devel. Board Bull. Columbia, S.C. South Carolina State Development...Bulletin. South Carolina Div. Geology Bull.- South Carolina Division of Geology Bulletin. South Carolina...Development Board. Columbia, S. C. South Carolina Div. Geology Geol. Notes- South Carolina Division of Geology |  | | Book | | making a profit. Initially incorporated in the District of Columbia, the Publishing Company was reincorporated... . The main period of ore deposition within a district seems to represent a relatively short time span...rocks, near Selukwe in the Rhodesian craton of Zimbabwe, which are about 3.4 billion years old. Though...ratios, were originally deĀ¬ scribed from the Komati River section in the BarĀ¬ berton Mountain Land by M. J...base of the Complex (Vermaak, 1976). At the Atok mine, platinoid minerals tend to occur at the boundaries |  | | Report (issue) | | _______________________ Wyoming. _____------_-________________ South Dakota. __ _______________________ Nebraska. __...________________ 217 Regional offices _---- _-- ---_- _-_217 District offices__-___----___-_-__ ____ 217 Offices in...gold-ore bodies presentry exposed in the Carlin mine are in extensively altered shaly limestones. In...Mountains Limestone, below the present exposures in the mine, adds substantially to the potential gold production...elsewhere in the 17-sq-mi altered area within the district may therefore be clues to concealed ore deposits |
|
