 | | Journal (article/letter/editorial) | | Rhodesia, however, large-scale mining operations at Bikita for lithium minerals (Cooper, 1961 ; Wilson and...other lithium minerals except in the Mterikati pegmatite. Lithiophorite is the only other lithium mineral...the Dam Site pegmatite. The refractive indices of montebrasite from the Benson 2 pegmatite (no. 13, table...replaces montebrasite in a sample from the Bikita pegmatite and members of the goyazite and possibly of...in six perthite-rich pegmatites from the Miami district of Rhodesia appears to be manganoan fluorapatite |  | | Journal (article/letter/editorial) | | presenceof the higher temperatureminerals pyrrhotite, arsenopyrite,and sphalerite. On a regional scaleit can be...the most important single occurrences pyrite, arsenopyrite,and cinnabaroccurlocally,the antimonymineralizationin...onshipto volcanismam)ears prominent areas of pegmatite developmentfrom reasonable for some of the iron-formations...BarbertonMountain Land. In the that known as the Bikita Tinfield, located at the eastlatter case.banded... 19713, whereas in the underlyin• Fig the Bikita pegmatite,one of the largestdepositsof Tree Group, |  | | Report (issue) | | 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...accompanying metals such as copper and tungsten, and the pegmatite metals, tin, tantalum and lithium are, with few...at the Cotopaxi and Dickens mines in Victoria District in 1894, but it was not until the early l 900's...or chalcedonic type, and pyrite, pyrrhotite, arsenopyrite, chalcopyrite and stibnite in various combinations |  | | Journal (volume) | | . . .. ...... . ... . ..... . . . The parent pegmatite .... .. .... .. .......... ... ........ . ...... . . . ... ... . ..... . ...... . The parent pegmatite .. ... . . ......... .... . ...... .... . . ......... . .. . . ............ . . . The parent pegmatite ............... ...... . . ................ .... ....... ... . . ... .. . . . . . The parent pegmatite .............. . . .... ... . ..................ana1cime coexisting with pollucite at Luolamäki pegmatite, Finland and on this basis suggested immiscibility |  | | Book | | part of the Hidden Treasure manto, Ophir mining district, Utah. (After Gilluly 1932.) Mantos and pipes...pyrite and magnetite with minor chalcopyrite, arsenopyrite and cassiterite. Beneath n the central part...ankerite, sericite, albite, quartz, pyrite and arsenopyrite are well developed in the altered wall rocks...in pegmatites Lithium-tin-caesium pegmatites of Bikita, Rhodesia. Uranium pegmatites of Bancroft, Canada...Spodumene-feldspar g oom Fig. 4.3. Section through the Bikita Pegmatite showing the generalized zonal structure and |  | | Book (edition) | | added to meet requests. Chapters on greisen and pegmatite deposits have also been added, the former in response...part of the Hidden Treasure manto, Ophir mining district, Utah. (After Gilluly 1932.) 30 CHAPTER 2 ...pyrite and magnetite, with minor chalcopyrite, arsenopyrite and cassiterite. Beneath the central part of...occasionally with galena, sphalerite, chalcopyrite and arsenopyrite. This zone SURFACE UPPER QUARTZITES Pyrrhotite...outcrop or suboutcrop. For the location of this are district sec Fig. 18.10. (After Du Toit 1954.) 1979 prices |  | | Book | | minor 32 TABLE 2.3 (CONT.) Examples. Bushveld district - South Africa. *(D "Significant" denotes that...Geology and mineral resources of the Cooktown district tinfields. Queensland Geological Survey, Publication...Cassiterite is irregularly disseminated through the pegmatite body and is present as large dipyramidal crystals...minerals forming the greisenized areas in the pegmatite. The stanniferous pegmatites and placers derived...however, the deposits are usually small. Two large pegmatite deposits, Busango in RuandaUrundi, and Manono-Kitatolo |  | | Book | | major producing districts, or a representative district if there are many. We name the chief mining companies...graphite supply must come not merely from one district but from a single mine. Thus the physical properties...(chrysotile of the Transvaal, South Africa; Swaziland; Zimbabwe). (3) Table 1 The asbestos minerals Banded ironstone...damage, Soviet Union Canada Chrysotile Brazil Zimbabwe Chrysotile South Africa Amosite Crocidolite Chrysotile...ultramafic rocks stretching from the Baie Verte district of Newfoundland though the Thetford Mines, Black |  | | Book | | in the granites in the Palaeozoic and towards pegmatite deposits in the pre-Cambrian”. However, this pattern...placers little or much modi fied (Isergebirge District, Poland; Ipameri, Goias Brazil; Esira region,...nepheline-syenite pegmatite in Norway (Mulligan, 1975, p. 9). In this paper the terms ‘pegmatite’ and ‘aplite’...refer only to the granitoid varieties. The term ‘pegmatite’ has often been misused: I shall use it as Holmes...large size —”. Many so-called pegmatite bodies are, in fact, pegmatite/ aplite units as is, for example |  | | Book | | 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 |  | | Report (issue) | | equivalent of the southeast 3 INTRODUCTION Missouri district can be expected to turn up in the future ; the...mid-1950's on the west side of the Southeast Missouri district resulted in the discovery of the large unexposed...part of the district. With the phoenixlike rejuvenation of the Southeast Missouri district, the Viburnum...an estimate of the ore remaining in a producing district; twice the amount of his inflated estimate, however...is known to utilize this kind of approach on a district or regional basis, and I hope a start can soon |  | | Report (issue) | | .... 32,688 60,897 18.51 8.64 3,488 3,975 Zimbabwe: Producers. . 91,543 5.46 4,829 Other: Producerst...Salita: Rita ies Meet Aces ed Vernon: LOW... ata ek Zimbabwe Gath's 20%) sie A OG: tsges sad Ga Cassiar. Mining...Africa, Republic of ...... United States ...... Zimbabwe......... 110 30 196 96 125 94 107 (0) 102 ...fo)oiro) $/mt fiber 600 Africa Canada Republic Zimbabwe i Taxes el — United COSTS, PRODUCTION PRODUCING...hand sort; F, flotation; S, size. 4ZP, zoned pegmatite; NP, nonpegmatite. BERYLLIUM U.S. AND WORLD |  | | Report (issue) | | at the regional Mines and Minerals office whose district includes the area covered by the report (see below)...purchased at Publication Sales and the office whose district includes the area covered by the report. Although...part), District of Sudbury G.W. Johns 7. Geological mapping west of Watabeag Lake, District of Cochrane...G.P. Beakhouse LITHOPROBE 16. Late-tectonic, pegmatite-aplite dike systems in the Archean crust between...Mack pegmatite system: a newly discovered western extension of the Separation Rapids pegmatite group |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | hydrothermal quartz veins associated with pyrite, arsenopyrite, and other sulfide minerals, and in placers...Co., Bonanza mine, Trinity Co., Michigan Bluff district, Placer Co., in AK, placers at Fairbanks, Iditarod...and quartz veins at Juneau. In Canada, Noranda district, PQ; Porcupine, Kirkland Lake, and Larder Lake...deposits, ON; Atlin and Caribou, BC; and Klondike district, YT. In Mexico, Altar and Magdalena, SON; Parral...Ghana; Kilo and Moto, Zaire; Bulawayo and Hartley, Zimbabwe; Witwatersrand, South Africa, a belt of fossil |  | | Book | | be confused with the discrete and distinctive pegmatite bodies that are described below. Above. Hexagonal...crystallize as bodies known as pegmatites or pegmatite veins. The fluidity of the melt facilitates the...them. Druses are irregular cavities in the pegmatite that are lined with crystals, which grow inwards...arrangement, so that species to species, and the pegmatite may be zoned in distinct layers varying both in...granite stocks, or in the adjacent country rocks. Pegmatite minerals, although by definition coarse-grained |  | | Book | | succession has been described from the Vermilion district in northeastern Minnesota (Morey et al., 1970;...the Knife Lake Group in the central part of the district and by the Lake Vermilion Formation in the western...Formation N.W.T. (Henderson, 1972); 5 = Vermilion district, Minnesota (Ojakangas, 1972); 6 = North Spirit...from a few millimeters to nearly 1m in the same pegmatite. Micrographic textures are common. Most pegmatites...in the roof zone of the granite resulting in pegmatite formation. Consideration of norms of Archean granitic |  | | Report (issue) | | Republic of Korea, Peru Brazil, South Africa, China, Zimbabwe Israel, Canada, China, Mexico Trinidad and Tobago...Gold Project in the Stibnite-Yellow Pine mining district in Idaho. In 2016, the company began drilling...smelter flue dust, as well as from roasting arsenopyrite, the most abundant ore mineral of arsenic. Arsenic...beryl that can be economically hand sorted from pegmatite deposits. The Spor Mountain area in Utah, an epithermal...of those deposits has been ongoing since 2013. Zimbabwe and Namibia produced cesium in small quantities |  | | Report (issue) | | WILSON,A.H. (1912): The geology of 1he 0... Dyke, Zimbabwe: The ultramafic rocks. J. Petrology23, 240-292...inclusions from topaz-quartzrocks from the ew England district of cw South Wales in Australia. Many of the Ml...with the re ults of Burnham (1978) using Harding Pegmatite as startingmaterial. Theoriginaldata are reported... R.J Bodnar and Minera/i;atio11 in the Bulle District,Mo111a11a Ph.D. thesis, Harvard Univ. Cambridge...volcanic :t11atijr..-., tourmaline-topaz aplite-pegmatite layered comgrades upward from andalusite-muscovite |
|
