 | | Journal (article/letter/editorial) | | mechanism of formation for Maggs Pipe, Zaaiplaats tin mine, South Africa P.J. Pollard, R.G. Taylor and N.M...and Bobbejaankop Granite at the Zaaiplaats mine are host to major tin mineralization. Detailed textural...includes calcite-quartz, chlorite (±cassiterite, albite, fluorite) and synchisite-calcite zones. It is...Preliminary observations on several other pipes at Zaaiplaats indicate that quartz and feldspar dissolution...further constrain models of pipe formation at Zaaiplaats, a detailed textural and mineralogical study |  | | Journal (article/letter/editorial) | | PervasivelyAltered BushveldGranitesat the ZaaiplaatsTin Mine P. J. POLLARD,R. G. TAYLOR, Departmentof Geologyand...Nedlands, Western Australia 6009, Australia Abstract Tin with associated tungstenand rare earth elementmineralizationat...partially filled by hydrothermalmineralsincludingquartz,albite,chlorite,sericite,fluorite,hematite, and calcite...tectonicfracturing duringcrystallization of the granitesat Zaaiplaats wasprobablythe mostcrucialfactorin the developmentof...in graniteswhichcontainprimarytopaz,microcline,albite, and Li micas, with minerals of the columbitetantalite |  | | Journal (article/letter/editorial) | | investigations of some orogenic belts in Central Africa. - - Res. Instit. African Geol., Univ. Leeds, 1Oth...geochronology of Zambia and adjacent parts of Central Africa. - - Canad. J. Earth Sci., 5, 621--628, 1968. VAIL...Bushveld granites around Rooiberg, Transvaal, South Africa*) By PASQUALEIANNELLO,Francistown **) With 11...of the author: Anglo-American Corporation of South Africa (Pry) Ltd. P.O. Box 326, Francistown, Botswana...Bushveld granites around Rooiberg, Transvaal South Africa Abstract The detailed investigation of the |  | | Journal (article/letter/editorial) | | University of Natal , Pietermaritzburg, 3200, South Africa d U.S. Geological Survey , Box 25046, Mail...University of Natal, Pietermaritzburg 3200, South Africa AND ROY KNIGHT Downloaded by [ECU Libraries]...Verena-Balmoral, Enkeldoorn, Sekhukhune Plateau, Zaaiplaats-Potgeitersrus, and Western Transvaal). Coherent...Bushveld Complex (BC) of the central Transvaal, South Africa (Figs. 1 and 2), consists of three major rock...FIG. 1. Location map for the Bushveld Complex, South Africa (after Tankard et al., 1982). Black areas = |  | | Journal (article/letter/editorial) | | THE GEOCHEMISTRY OF THE BUSHVELD POTGIETERSRUS TIN-FIELD GRANITES IN THE D.H. LENTHALL* and D.R. HUNTER...University of the Witwatersrand, Johannes burg (South Africa) Department of Geology and Mineralogy, University...University of Natal, Pietermaritzburg (South Africa) (Received and accepted May 3, 1977) ABSTRACT Lenthall...of the Bushveld granites in the Potgietersrus tin-field. Precambrian Res., 5 : 359--400. An area of 324...of the Bushveld granites in the Potgietersrus tin-field. Two hundred and sixty nine samples were collected |  | | Journal (article/letter/editorial) | | EconomicGeology Vol. 84, 1989, pp. 1817-1834 Disseminated Tin Mineralization in the Roof of the Bushveld Granite...Zaaiplaatstin mine. Severalstylesof endogranitictin mineralizationoccurat the Zaaiplaats mine, but disseminated...absentor poorlydevelopedand, exceptfor the anomalous tin contentsin thiszone,there are few obviousdifferencesbetween...BushveldComplex,and granite in the disseminated tin zone is more altered than barren Bobbejaankop Granite...Ca, Rb, Cu, and Sn, and depletedin Na. Within the mine area, granitefrom the mineralizedzone containshigherNa |  | | Journal (article/letter/editorial) | | base to top) by the following trends: increasing albite component of plagioclase; increasing Al/Si ordering... In the mineralized Bushveld granites of the Zaaiplaats area, sub-solidus alteration is extreme. Our...University of Pretoria, Pretoria 0002, Republic of South Africa 1384 GUNTHER J. KLEEMANN AND DAVID TWIST... 1987). Their disparate ages, evident from the field relationships, are thus indirectly confirmed. This...paper will document and discuss aspects of the field geology, petrography, and geochemistry of the Bushveld |  | | Journal (article/letter/editorial) | | Disseminatedand Pipe-Style Mineralization at the ZaaiplaatsTin Mine P. J. POLLARD, Departmentof Geology, JamesCookUniversity... Townsville,Queensland4811, Australia Abstract Tin-tungsten-rare earth elementmineralizationat Zaaiplaatsis...temperatures, andindicatethatoxygenisotopevariationat Zaaiplaats reflectsexchange between the graniteandthe magmaticfluid...characteristic feature of granitesassociated with tin mineralizationandprovidesa recordof interactionbetweenthe...1954; Crocker,1986; PollardandTaylor, 1986) is a tin-tungsten-rare earth element-mineralizedsystemwhich |  | | Journal (article/letter/editorial) | | lSystemin BushveldGranites at the ZaaiplaatsTin Mine: LeadIsotopeEvidence N. J. MCNAUGHTON, KeyCenter...NorthQueeaslaad, Townsville 4811,Australia Abstract Tin mineralizationat Zaaiplaatsis hostedin alkalifeldspargranitesof...different,variablymineralizedgranitebodiesat Zaaiplaats showa relativelyrestrictedrangefrom961 _ 129...withintheBushveld granitesispreservedat theZaaiplaatstin mine, where disseminated and pipe-style magmatichydrothermalfluidsover... I•1 SHRIMP GeologicSetting The Zaaiplaatstin mine (Fig. 2) is situatedapproximately 35 km northwestof |  | | Journal (article/letter/editorial) | | 1995 The tin zone: sediment-hosted hydrothermal tin mineralization at Rooiberg, South Africa A. Rozendaal...7600, South Africa 2 Gold Fields of South Africa, 75 Fox Street, Johannesburg 2001, South Africa Received:...1994/Accepted: 9 December 1994 Abstract. The Rooiberg tin field, also known as the Rooiberg Fragment, is located...Lebowa Granite Suite. Practically all the significant tin deposits are hosted by arkoses, located towards the...hydrothermal carbonate breccias appear to dominate each mine. Petrological and geochemical investigations of |  | | Journal (article/letter/editorial) | | COMMUNICATIONS PROGRESSIVE EVOLUTION OF ALTERATION AND TIN MINERALIZATION: CONTROLS INTERSTITIAL PERMEABILITY...FRACTURE-RELATED TAPPING OF MAGMATIC FLUID RESERVOIRS IN TIN GRANITES BY P. J. POLLARDAND R. G. TAYLOR Departmentof...lower sectionwhere the veins pervasivealterationof tin-bearinggranitesfromcon- die out within the upper...granite (Gu trasting environments,the Herberton tin field, Aus- Juyun, 1982); (5) a wide diversityconcerningthe...generaltendencyfor Granitescloselyassociated with tin and other rare tainedwithinthe interstices of the |  | | Journal (article/letter/editorial) | | Pretoria, Pretoria 0002, South Africa 2 CSIR, P.O. Box 395, Pretoria 0001, South Africa Received: 6 May 1994/Accepted:...Current address: P.O. Box 363, Kleinsee 8282, South Africa Stratigraphic relationships between the Rooiberg...volcanics must therefore be older than 2054 Ma. From field relationships, then, it is not possible that the...wholly devitrified to a granular intergrowth of albite and quartz. Sericite and chlorite alteration is...intergrowth of sheaflike albite and augite grains. "Swallow-tailed" albite grains are present. Chlorite |  | | Journal (article/letter/editorial) | | matrix-matched reference material: Examples from worldwide tin deposits spanning the Proterozoic to the Tertiary...matrixmatched reference material: Examples from worldwide tin deposits spanning the Proterozoic to the Tertiary...matrix-matched reference material: Examples from worldwide tin deposits spanning the Proterozoic to the Tertiary...Abstract. Cassiterite (SnO2), a main ore mineral in tin deposits, is suitable for U–Pb isotopic dating CR...cassiterite from tin deposits in Bolivia, Brazil, China, Russia, Saudi Arabia, South Africa, IP Spain, |  | | Report (issue) | | International Strategic Minerals Inventory Summary Report-Tin Prepared as a cooperative effort among earthscience...Federal Republic of Germany, the Republic of South Africa, the United Kingdom, and the United States of... International Strategic Minerals Inventory Summary Report-Tin By David M. Sutphin, Andrew E. Sabin, and Bruce L...Federal Republic of Germany, the Republic of South Africa, the United Kingdom, and the United States of...International Strategic Minerals Inventory summary report- Tin I by David M. Sutphin, Andrew E. Sabin, and Bruce |  | | Journal (article/letter/editorial) | | 20013 pohwatp@si.edu FLUORITE Part 2 Huanggang Mine, Inner Mongolia, China T he first part of this...this column concentrated on the North and South American fluorite localities (Pohwat 2013). In this installment...northern England, particularly from the Rogerley mine, has made these classic specimens available once...localities. The mines of Cornwall have been mined for tin at least since the time of the Roman Empire. Later...copper. Besides providing excellent examples of tin and copper minerals, Cornwall has provided a wealth |  | | Journal (article/letter/editorial) | | Southern Queensland] at 01:02 11 October 2014 Muzo District, Colombia Parisite-(Ce) crystals to 2.2 cm across...the emerald mines of Colombia or from the Snowbird mine, Montana. A quick look at the mineral’s chemical...structure of a “clean” crystal from the Muzo (Muso) mine, Colombia. They found it to be pseudohexagonal,...Rock, Granite Mountain, and Holiday Inn quarries south of Little Rock, Pulaski County, Arkansas. It has...collectors. Perhaps the most familiar is the Snowbird mine, Mineral County (Lasmanis 1977). Here parisite-(Ce) |  | | Journal (article/letter/editorial) | | Caesars “something new” has ever been coming “out of Africa.” Nowadays geologists are there finding novelties...copper deposits of Katanga in the center, and in the south the Ehodesian “Great Dike,” the clear evidences...all these and many other newer discoveries in- Africa are { f ^ ' i n g the very foundations of general...readily accessible to geologists outside of South Africa, and the majesty of the Bushveld Complex, with...clearly due to continue for many more decades. The field observations and the collections here considered |  | | Book (edition) | | OF OF SOUTH AFRICA MINES GEOLOGICAL SURVEY MINERAL RESOURCES OF REPUBLIC OF THE SOUTH AFRICA...Second World War, and partly as a result of it, South Africa experienced vast industrial expansion. This...official ‘handbook on the mineral resources of South Africa, it has become necessary to revise, or rather...great diversity and magnitude of South African mineral deposits and local mining operations, the Economic...Chamber of Mines of South Africa with Mr G. H. Grange as co-ordinator, and the South, African mining industry; |  | | Journal (article/letter/editorial) | | GEOLOGICAL EXCURSION TO THE MINING AREAS OF SOUTH AFRICA by Aberra Mogessie, Christoph Hauzenberger...State, South Africa 1. Preface Almost a year ago Aberra Mogessie planned to organize a field excursion...(where we had organized past excursions) and South Africa. Having discussed the matter with Christoph...to organize a field excursion to the geologically interesting mining areas of South Africa. We contacted...from the University of Free State, South Africa to help us with the local organization especially to get |  | | Journal (article/letter/editorial) | | that in the Taringatura district of Southland the mineral occurs with albite in the lower members of...locality in the Lake Superior region, Calumet and Hecla mine, Houghton County, Michigan. The fragment consists...aggregate in (010) section in the lower centre field. Much of this photomicrograph is occupied by sub-prismatic...bluish-green crystals occur embedded in chlorite in albite-filled amygdales in a spilitic pillow lava. The...acute angle ft. North Range, Taringatura survey district, Southland, New Zealand.-Pumpellyite is occasionally |  | | Journal (article/letter/editorial) | | Qitianling granitoid and the Furong tin ore deposit in Hunan Province, South China: implication for the genesis...genesis of granite and related tin mineralization KUI-DONG ZHAO, SHAO-YONG JIANG*, YAO-HUI JIANG, RU-CHEN...China. Recently, the Furong tin ore deposit was found in this stock, with a tin reserve of approximately...worldwide. Fractional crystallization of the magma and tin deposition directly from exsolved magmatic-hydrothermal...l fluids may not be the major mechanism for the tin mineralization in this deposit. Instead, we suggest |  | | Journal (article/letter/editorial) | | A. LEUBE PART II. PETROLOGY, AND SOUTH TIN MINES, AFRICA E. F. STUMPFL MINERALOGY AND GEOCHEMISTRY.......................................... 531 B-Mine (Nieuwpoort) .....................................Thefeldspar maybeorthoclase or acidplagioclase (albite-oligoclase) and thequantitative relation of thetwofeldspars...more acceptable. In Figure 19, the composition field of the Rooiberg"quartzites"is projecteduponPettijohn's...originally were ROOIBERG •IND LEEUIJ/POORT TIN MINES 529 rich in primarycarbonate. On the contrary |  | | Report (issue) | | ASSISTANCE OF THE SCIENTTFIC AND TECHNICAL STAFF TIN ORES BY G. M. DAVIES, M.Sc. (LoND.), F.G.S. Scientinc... CONTENTS CHAPTER I TIN ORES : T THE ORES R OCCURRENCE, CHARACTERS AND USES PAOB OF TIN-WORLD'S PRODUCTION...PRODUCTION OF TIN ORE-VALUATION OF TIN ORE-THE PRICE OF TIN -THE PROPERTIES OF TIN-THE USES OF TIN• SECONDARY...SECONDARY TIN • • • • • I CHAPTER II SOURCES OF SUPPLY OF TIN ORES {a) BRITISH EMPIRE : Europe : United...Settlements . 29 Africa: Gold Coast, Nigeria, N yasaland, Rhodesia, Union of South Africa, Swaziland 47 |  | | Journal (article/letter/editorial) | | southern spurs of the Shelag Range in the Chaun District of the Chukchi Peninsula. The metasomatic vein...the Kekurny tin deposit. Granite at this outcrop under- went intense tourmaline–albite alteration and...allanite-(Y) and allanite-(Ce) in tourmalinite from Chaun district of Chukchi Peninsula. Aln-Ce, allanite(Ce); Aln-Y...aggregates and individuals in tourmalinite from Chaun District of Chukchi Peninsula: (a) parallel intergrowths...allanite-(Y) and allanite-(Ce) in tourmalinite from Chaun District of Chukchi Peninsula. Micrographs, plane light |  | | Report (issue) | | Tin Chapter S of Critical Mineral Resources of the United States—Economic and Environmental Geology and...106.4 silver 107.9 cadmium 112.4 indium 114.8 tin 118.7 antimony 121.8 tellurium 127.6 iodine 126...Matrix Minerals; used with permission. Right, wood tin cassiterite. Photograph copyright © R. Weller, Cochise...Cochise College; used with permission. Tin By Robert J. Kamilli, Bryn E. Kimball, and James F. Carlin...J., Kimball, B.E., and Carlin, J.F., Jr., 2017, Tin, chap. S of Schulz, K.J., DeYoung, J.H., Jr., Seal |
|
