 | | Journal (article/letter/editorial) | | Disseminatedand Pipe-Style Mineralization at the ZaaiplaatsTin Mine P. J. POLLARD, Departmentof Geology, JamesCookUniversity...fluorite,andscheelite,and(3) cassiteritefrom the Iota pipe. Theseinclusions homogenizeby dissolution of...marginalpegmatite,and (3) late quartzandcalciteinfill from the Iota pipe. Theseinclusions homogenizeto the liquidphasebetween88ø...SouthAfrica. Since operationscommencedin 1906 the mine has producedin excessof ! 7,000 metrictonsof tin...mineralization. GRANITE-FLUID INTERACTION, ZAAIPLAATS MINE,R. S.A. . / • • -- / • •• •, •_ . -• N • |  | | Journal (article/letter/editorial) | | certain types of quartz-rich granitic pegmatite (e.g. IOTA® 2005; Norwegian Crystallites AS 2006) and hydrothermal...origin. Common accessories are rutile, zircon and pyrite. Rutile can be a minor mineral in centimeterthick...concentrations of up to 2 wt% (Fig. 3d). Fine-grained pyrite (1 mm) is dispersed in the rock, and it forms up...granoblastic–polygonal texture depending on the local deformation history. Kyanite plates are commonly...on fractures result from weathering of accessory pyrite. The lower edge of the photograph corresponds to |  | | Journal (article/letter/editorial) | | formation for Maggs Pipe, Zaaiplaats tin mine, South Africa P.J. Pollard, R.G. Taylor and N.M. Tate Department...Lease and Bobbejaankop Granite at the Zaaiplaats mine are host to major tin mineralization. Detailed textural...Zaaiplaats tin mine (Fig. 1) is situated within the northern limb of the Bushveld Complex, South Africa. Details...Location and geologicai setting of the Zaaiplaats mine The general relationships between the various styles...hosted by the Bobbejaankop Granite, which in the mine area is typically red in colour and corn- General |  | | Journal (issue) | | time most producers get through tacking on their 'local extras' the so- called producer price is more like...Bridgeport Brass' aluminum facilities. A U.S. district court judge dissolved Justice's 10-day restraining...constructing a $400,000, 350-tpd concentrator at the mine site. American and Southern Corp. is planning to...processing copper from the neighboring El Salvador mine. Output will be 3000 tpm when all units of the refinery...Bolivia . . . . . . . . . . . . . . • . . . U. of s. Africa . .. .. . .. .. Oth.er . . . . . . . . . . . • |  | | Catalog/List | | good stuff that used to come out of the Marencl mine, ~ut the price is a whole lot better. specimens...00 eaoh. CLEANED COPPER AND MALACHITE: Southwest Mine, Bisbee, Arizona: I've had these for a few years...well worth it! $4.00 each ENARGITE, BOURNONITE, PYRITE, GALENA, SPHALERITE: Various localities, Peru:...juat collected this spring immediately before the mine was closed for refilling and reolalmlng. There will...are only $4.~0 ,ach. MALACHITE FLOWERS: lalrt, Africa: Outstanding 2.5 to 3.5 Inch apeolmens of groan |  | | Journal (issue) | | Briefs_ _ _ _ _ _ _ _ __ A new Swedish copper and pyrite mine is planned by Boliden Kristinberg. The company...Mineral Market , Ferroalloy Prices (a) carload Iota: (b) dellveftd: (c) lump bulk; (d) f .o.b . ahlpplna...Foreign Iron Ore Expansions Private Ports Approved; Local Stock Sale Planned by Eileen Mackenzie Rio de Janeiro:...companies for the right to expand their operations. Local reinvestment of profits and a 40% stock offering...oper ations in Canada, including its giant potash mine and re.finery at Esterhazy, Saskatchewan. \V. H |  | | Journal (issue) | | to tell whether enough will come back to get the mine going. Crucial points are still unsettled. It now...holding. Workers are back at the Emusa, Bolivia, mine - at least for now After a week of resistance. all... Increased output is the goal. IMC's 33% potash mine and refinery expansion has been completed. The $12-million...Brazil and Canada. A new Swedish copper and pyrite mine is under study by Bollden Mining Co. The company...tons; partly contributing to the big stock build-up. Mine output was unchanged. Outside the U.S., refined |  | Xia, Mei, Sun, Chao, Yang, Xiaoyong, Chen, Jian (2023) Assessment of Gold-Bearing Quartz Vein as a Potential High-Purity Quartz Resource: Evidence from Mineralogy, Geochemistry, and Technological Purification. Minerals, 13 (2) 261 doi:10.3390/min13020261 | Journal (article/letter/editorial) | | utilization of tailings resources and to improve mine economic benefits. https://doi.org/10.3390/ min13020261...utilization of tailing resources and to improve mine economic benefits. 2. Geological Background and...60 km south of the town of Chibougamau. There are many mineralized veins in the Joe Mann mine, which...hosted by highly altered and sheared rock, such as pyrite, pyrrhotite, and chalcopyrite lens and veinlets...southeastern of the Jiangnan orogen ton and the South China Block. This area experienced two orogenic |  | | Journal (article/letter/editorial) | | the eastern slope of the Nether Polar Urals from south to north for approximately 150 km (Fig. 1). The...chlorite, feldspar, calcite, hematite, ilmenite, pyrite, and others. These minerals are con Fig. 1. Schematic...laboratory standards (crushed quartz samples of Iota4 and others). Internal control was carried at the...occurrence); 24/86a—fine grained (Verkhnekozhymskii district); 2234—rock crystal (Zhelannoe deposit). All analyses...particles are removed, together with calcite, ilmenite, pyrite, and other miner als that were contained in aggregates |  | | Journal (issue) | | Rood Somers, Connecticut -.-----Garnet, Lulubell Mine, Son Diego County, California. low in silica. Biotite...Smoky quartz with cleovelondite cluster, Himoloyo Mine, Mesa Grande, Col i forn,o APRIL l 96� ll \I...green tourmoline and cteavelandite, Little Three Mine, San Diego County, California. and with a hardness...MINERALS OF Tole Be ryl Emery Borax Halite Pyrite Sulfur Quartz Galena Barile Bauxi te Calcite...E D IAM O N DS from the fabulous fields of Africa and South America at prices you can afford ! Be the |  | | Book | | Quartz Pebbles from the Witwatersrand Basin, South Africa . . . . . . . . . . . . . . . . . . . . . ....Quartz and Ore Minerals: Evidence for South Crofty Tungsten Mine, Cornwall, United Kingdom . . . . . ...and Electron Microscope Unit, University of New South Wales, Sydney, NSW 2052, Australia, e-mail: Marion...application Magmatic/postmagmatic Quartz of alaskite (‘‘Iota quartz’’) Chemical purity Pegmatite and Hydrothermal...composition (in ppm) of ultra-high purity Iota quartz standards (IOTA 2005) and high purity quartz HPQ (Norwegian |  | | Journal (article/letter/editorial) | | Erosion and local sedimentation FiG. l. Map of western Kenya showing fluorspar district and major faults...[-•-1 Guartzofnidnpathb gneiss i•--'•Contoursof IOta. vertical Interval Streams Hornblende gneiss Fault...northapproximatelyeast-west. Five separatebodiesfrom south direction. Three of them are associated with individual...quartzandchalcedony, whichare typical adularia, pyrite, and chlorite. Specimensof chalof epithermalconditions(Bateman...fluoritehaslargelyreplaced chalcedony, low quartz,chlorite,and pyrite. Hydrocrystallinelimestone. At Kimwarer the large |  | | Journal (article/letter/editorial) | | contact. Most of the veins presently worked by local tributors are in the argiUite unit. The mineralized...annually from the Yetkanzintaung area under the local tribute mining system operated by No. 2 Mining Corporation...rich at the intersection of the veins. Very minor pyrite, galena, and bornite, and some fluorites are also...Contacts \ Adit Portal 1+50E 1+50E Ar 1, 5rn I IOta | Scale in meter Gr -""" Ar I Gr ---,~ Gr...Heron, A.M.: The geology and ore deposits of Tavoy District. Memoirs Geol. Surv. India, vol. XLIV Part II |  | | Journal (article/letter/editorial) | | PervasivelyAltered BushveldGranitesat the ZaaiplaatsTin Mine P. J. POLLARD,R. G. TAYLOR, Departmentof Geologyand...SouthAfrica. Sinceoperationscommencedin 1906 the mine has producedin excessof 17,000 metric tonsof tin...alteredgranite(PollardandTaylor, Granite, with local namesbeing applied to distinct 1986). Theselatter...Regionalgeologicsettingof the Zaaiplaatsmine. ZAAIPLAATS Sn MINE: ALTERED GRANITES nized as varieties of the Nebo...bejaankopGranites(Coetzee, 1984, 1986), and on In theZaaiplaats district(Fig.2) theBobbejaankopgeochemicalhalossurroundingpipe |  | Andreoli, M. A. G., Smith, C. B., Watkeys, M., Moore, J. M., Ashwal, L. D., Hart, R. J. (1994) The geology of the Steenkampskraal monazite deposit, South Africa; implications for REE-Th-Cu mineralization in charnockite-granulite terranes. Economic Geology, 89 (5) 994-1016 doi:10.2113/gsecongeo.89.5.994 | Journal (article/letter/editorial) | | north of Cape Town (Fig. 1). The Steenkampskraal mine first operatedfrom 1952 to 1963 whenit represented...(Pike, 1959; R. Corrans, pers. commun.). Sincethe mine hasnow been closedfor 30 years, access to some of...observations conducted in the course of from the mine wasestimatedat 50,000 metric tonsof two undergroundvisits...concentrateaveraging45 wt percent REE The Steenkampskraal mine exploitedthe largest oxides,4 wt percentThO2, 18...1987). Mostof theseoccurrences are advanced from south to north to intersect the ore. in the form of veins |  | | Report (issue) | | LEAD ZUfC JLHD COBPER DEPOSITS Of THE OROUt DISTRICT, NBW MEXICO ( With a Supplement on Occurrence of....... Hilltop mine............................................. 21 22 Rlckardlte mine............................................. Little Bnck mine......................................... Moll ins prospect.......................... 23 26 26a 27 karrlmao mine............................................ 27................................... 23 Izcelsior mine........................................... 29 |  | | Journal (article/letter/editorial) | | TAKEO SATO Abstract The Kosaka mine is a productiveCu-Pb-Zn-Au-Ag mine in Japan and is locatedat the easternmargin...easternmargin of the Hokuroku mining district in northeastHonshu Island. The ore depositsof the mineare...mineare dividedinto threemain groupsfrom north to south,namdy, the Motoyama, Uchinotai, and Uwamuki ore deposits...described. The iron content of sphaleritecoexistingwith pyrite from the Uchinotai-nishi and Uwamuki No. 4 ore...depositsare strataboundmassive sul- I-Iokuroku district is a volcanosedimentarybasin fide-sulfate deposits |  | | Report (issue) | | minerals in kyanite quartzites are rutile, zircon, pyrite and other Fe-Ti-bearing oxides as well as sulfides...Drag NCA, Drag NC1; www.norcryst.no) and USA (Iota STD, Iota 8; www.iotaquartz.com). Concentrations of <25 |  | | Journal (issue) | | about % In. • ••••.•••• •• •••• $15.00 G01 0. Ibex Mine, Colorado. Fine xld. mass about %. no pnaue . ....wires In Riker mount • • • • 25.00 GOLD, Bullfrog Mine, Nevada. Finely disseminated In Quartz encloslnt...after Scheelite xis. In rock. 2 ½x2 ½ • • 2.50 PYRITE, Park City, Utah. Group of brilliant xis. 2 ½ x2%...Slab-. 2x 11Ax ¾. 216 grms. . . 17.50 Aerolite, Fo rest, Iowa. 18 grms. . ........ . ....... . 3.00 HUGH..................... 502 THE STIJRBRIDGE GRAPHITE MINE. By Prof. Charles Pa/ache .................... 503 |  | | Book | | remove a small hand specimen without harming the rest of the area. SPOTLIGHTS A series of illustrations...an explanation of their significance. called i iota Tuptions a He ae Volcanic i HEADING The subject...minerals. When quartz breaks, or fractures, the pyrite (fool’s gold) can colour. The hardness of a mineral...mineral. It is sometimes called ‘fool’s gold’ like pyrite because of its shiny golden colour. teed oprodite...family of rock-forming come from Colombia in South America. *¥ GYPSUM Gypsum is the chemical compound |  | | Journal (article/letter/editorial) | | only. r HgSOr.2HgO from burnt ore dump, Oceanic mine, San Luis Obispo Co., Calif. Diffractometer tracings...Terlingua district, Trans Pecos, Texas. Film No. 6362. a Schuetteite from the B. and B. mine, Nevada....naturally occurring supergenemineral in six quicksilver mine areas in Nevada, and at single mines in Oregon,...and native mercury have been found at the Opalite mine in Oregon and elsewhere,but they are not common...a little of this mineral. Except for cinnabar, pyrite is the only other sulfur-bearing mineral occurring |  | | Journal (article/letter/editorial) | | HaKOII;IeHNItMH Mej1H~ IIHHKa, CBHHLIa, cepe6pa H 30;IOTa. 3 0j214, B gOTOpblXHaxo~I;IT paCTBOp~I cepe6pa... i. Location of the Gutcher Lake area, Algoma District, Ontario, Canada (bar scale = 30 km). I e~ o...seafloor, concentrate in basins, and precipitate pyrite, sphalerite, chalcopyrite, marcasite, and pyrrhotite...cores into the reservoir have minor epigenetic pyrite, sphalerite, chalcopyrite, galena, and pyrrhotite...mainly silica with bornite, chalcocite, digenite, pyrite, chalcopyrite, stromyerite, native silver, tetrahedrite |  | Warnaars, F. W., Smith, W. H., Bray, R. E., Lanier, G., Shafiqullah, M. (1978) Geochronology of igneous intrusions and porphyry copper mineralization at Bingham, Utah. Economic Geology, 73 (7) 1242-1249 doi:10.2113/gsecongeo.73.7.1242 | Journal (article/letter/editorial) | | unaltered igneous rocks in and around the Bingham mine fall within a time span of 3.2 m.y., between 39...al)pear to be the youngestintrusive rocks in the mine. The averageage of four K-.kr determinationsof biotites...(38.8 m.v.). The youngestK-At age obtainedfrom the mine area was determinedfrom a selectedsampleof biotites...and unmineralized rocks in the Binghammining district obtainedby Moore et al. (1968), Armstrong(1970)...biotite augitc monzoniteArmstrong dated indicate a Iota(ion in the Paleozoic sediments between I•ark |  | | Journal (article/letter/editorial) | | durchschnittliche sulphide mound such as colloform pyrite and chalcopyrite Goldgehalt der Sulfide liegt zwischen...les sulfures des structures primaires telles que: pyrite et chalcopyrite colloformes et blende zonaire....MeCTe ~X o6pa3oBaHH~. B cpe~neM coalepz~anne 30~IOTa B cyan, qbn~Iax COCTaBYIYleT2 ~IO 4 ppm, c MaKCI...continental crust along continental margins in North and South H nepenoc ero npri npoxow-aeHriH rri~poTepMa~n...area where disseminated and stringer copper-gold-pyrite ores with an average of about 1.2% Cu and 0.4 ppm |  | Marquis, P., Brown, A. C., Hubert, C., Rigg, D. M. (1990) Progressive alteration associated with auriferous massive sulfide bodies at the Dumagami Mine, Abitibi greenstone belt, Quebec. Economic Geology, 85 (4) 746-764 doi:10.2113/gsecongeo.85.4.746 | Journal (article/letter/editorial) | | metamorphicmineralassemblage quartzsericite-rutile-pyrite __+ andesincandby the absence of albitephenocrysts...alterationzonesassociatedwith massivesulfidebodiesat the Dumagami mine in the Bousquetgoldcampof the Abitibi greenstonebelt...00 746 747 PROGRESSIVE ALTERATION, DUMAGAMI MINE,ABITIBI,QUI•'BEC 79'00' 78'00' 49'00' 49ø00 '...foliation (S1, 5 km of subsurfaceworkingsin the mine, followed 748 MARQUIS, BROWN,HUBERT,AND RIGG...are, in turn, enclosed in least into disseminated pyrite with increasingproportion altered metafelsites |
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