 | | Journal (article/letter/editorial) | | deposits in Swat, northwestern Pakistan, occurring in talc-magnesite and quartz-magnesite assemblages, have...seven emeralds, associated quartz (seven samples), fuchsite (three samples) and tourmaline (two samples) from...oxygen isotopic compositions of tourmaline and fuchsite are relatively constant (fi1s o = + 13 to + 14~'ooSMOW)...measured 6D values of the hydroxyl hydrogen in fuchsite ( - 7 4 to -61~oo SMOW) and tourmaline ( - 8 4...University of Pesha- 1. The Swat emeralds occur in talc-carbonate and quartz-carbonate lithologies. It appears |  | Zegers, T. E., Barley, M. E., Groves, D. I., McNaughton, N. J., White, S. H. (2002) Oldest Gold: Deformation and Hydrothermal Alteration in the Early Archean Shear Zone-Hosted Bamboo Creek Deposit, Pilbara, Western Australia. Economic Geology, 97 (4) 757-773 doi:10.2113/gsecongeo.97.4.757 | Journal (article/letter/editorial) | | give rise to asymmetric alteration zoning, with a fuchsite-carbonate zone in the more Mg- and Cr-rich cumulatetextured...amphibolite facies deposits in the Mount York district of the Central Pilbara (Neumayr et al., 1998)...ultramafic volcanic unit, now comprising mainly talc-chlorite mylonitic schist. Similar shear zones occur...detailed study carried out underground in the Kitchener mine. Setting and lithologies of the Bamboo Creek shear...mafic volcanics/chert/tuffs Shale unconformity gold mine FIG. 2. Structural map of the Bamboo Creek mining |  | | Journal (article/letter/editorial) | | switches and high-grade gold mineraliza‐ tion at Sheba Mine, Barberton Greenstone Belt, South Africa Lucas Pintos...switches and high-grade gold mineralization at Sheba Mine, Barberton Greenstone Belt, South Africa, Ore Geology...and high-grade gold 3 mineralization at Sheba Mine, 4 Barberton Greenstone Belt, South 5 Africa...petrographic and geochemical data from Sheba gold mine in the 17 Barberton Greenstone Belt of South Africa...high-grade (>40g/t Au) ore 20 bodies. The Sheba Mine is situated in well-bedded metaturbidites of the |  | | Journal (article/letter/editorial) | | com/loi/taje20 Geological setting and origin of fuchsite‐bearing rocks near Menzies, Western Australia...Johnson (1986) Geological setting and origin of fuchsite‐bearing rocks near Menzies, Western Australia...(1986) 33, 1-18 Geological setting and origin of fuchsite-bearing rocks near Menzies, Western Australia...Adelaide, SA 5001, Australia. Quartz-andalusite-fuchsite rocks in an Archaean greenstone belt at Menzies...mineral assemblage is now dominated by andalusite, fuchsite, and recrystallized quartz. Schlieren or vein-like |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | hosted in: (IIA) Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale (Colombia...deposits or hidden granitic intrusion-related (Austria, Egypt, Australia, Pakistan), and some unclassified...ct. Insufu rough emerald extracted from the Kagem mine in 2015. Lastly, on the 2th of October, the remarkable...(“the lion elephant”) was extracted from the same mine [3]. Other giant crystals have been discovered in...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million |  | | Journal (article/letter/editorial) | | Corrigendum: Geological setting and origin of fuchsite‐bearing rocks near Menzies, Western Australia...Corrigendum: Geological setting and origin of fuchsite‐bearing rocks near Menzies, Western Australia...(1986) 33, 1-18 Geological setting and origin of fuchsite-bearing rocks near Menzies, Western Australia...Adelaide, SA 5001, Australia. Quartz-andalusite-fuchsite rocks in an Archaean greenstone belt at Menzies...mineral assemblage is now dominated by andalusite, fuchsite, and recrystallized quartz. Schlieren or vein-like |  | | Journal (article/letter/editorial) | | serpentinecarbonate rocks, serpentine-talc-carbonate rocks, talc-carbonate rocks, talc-carbonate-chlorite rocks,...nate rocks, phlogopitequartz-carbonate rocks, fuchsite-quartz-carbonate rocks, fuchsitequartz rocks and...original rocks Location Source of references Talc (fuchsite), ankerite, magnesite, ferroan dolomite, quartz...et al. (1845) Carbonates, quartz, muscovite or fuchsite, pyrite, magnesite (locally) Quartz carbonate...processes involved in carbonatized serpentinite: talc-carbonate rocks, quartzbreunnerite and quartz-ferroan |  | | Journal (article/letter/editorial) | | mineralization predates the last deformation to affect the mine sequence, but formed by similar processes to other...is structural; such controls are observed at both mine and regional scales (MacDonald 1986; Ho and Groves...Harbour Lights, and at the nearby Sons of Gwalia mine, is associated with the formation of an early shear...Goldfields Province of the Yilgarn Block (Fig. 1). The district is located in the Mt. Margaret Goldfield, and...85 tonnes of gold, mainly from the Sons of Gwalia mine. Gold deposits in the Leonora area occur in the |  | | Journal (article/letter/editorial) | | zones, serpentinites are highly altered to form talc-carbonate rocks and weathering-resistant listwaenites...carbonated meta-ultramafic rocks that commonly bear a fuchsite-quartz-carbonate mineral paragenesis (e.g., Halls...Sofiya et al. 2017). They are often associated with talc-carbonate rocks. During the listwaenitization process...the released silica forms quartz (Uçurum 2000). Fuchsite, the common name for the green Cr-rich variety...alteration products at Gabal (G.) Sirsir, Wadi Hodein district, South Eastern Desert, Egypt. No detailed petrological |  | | Journal (article/letter/editorial) | | behold the splendid sparkle of the distant mica-mine dumps in New England sunshine to agree with this...A l S i ) Oj 0 ( O H ) : Clintonite occurs with talc in in cavities in amygdaloid at Mt. Baldo near Verona...Wnetia, Italy and also from the Zillertal. Tyrol, Austria. chlorite schist. It is yellow, green, reddish-brown...found with the corun dum of the Ekaterinberg district. Also occurs at the emery deposits east of Ephesus...chlorite from Mt. Greiner in the Zillertal Tyrol, Austria. In the U.S. good deposits of margarite occur in |  | | Journal (article/letter/editorial) | | extensivecarbonatealterationof bothrock types.Late sericite-fuchsite, ohiorite,and minor (secondgeneration)carbonatealteration...ciated with oredeposition,whereasthe sericite-fuchsite, chloriteandlate carbonatealterationwassuperimposed...contentof the fluidrangesfrom•0.85 molepercentin the talc-carbonate-alteredultramarierocksto 10 to 75 mole...accessory mineralssuchasmonazite,titanite, rutile, fuchsite,and sericiteat golddepositsandat Kidd Creeksuggests...uent alteration events(quartz-carbonate veins,fuchsite,chlorite_+rutile) associated with gold. Introduction |  | | Journal (article/letter/editorial) | | Corundum-Fuchsite Rocks in Greenstone Belts of Southern Africa: Petrology, Geochemistry, and Possible...27 Seprember 1 9 8 0 ABSTRACT Unusual corundum-fuchsite rocks with N,03 contents up to 89 per cent and...corundum contains up to 3.8 wt. per cent Cr203,and fuchsite up to 3.7 per cent Cr203.Coexisting minerals are...appearance of biotite and plagioclase. Both biotite and fuchsite may be rich in Ba Critical mineral assemblages...broke down to form, with the remaining silica, fuchsite and AISiO,, and without silica, diaspore and corundum |  | | Journal (article/letter/editorial) | | Specimen about 6 cm wide. Figure 4. Muscovite var. fuchsite crystals to 8 mm wide, Karelia, Russia. Based...Muscovite crystals forming a 10-cm rosette, Jose Pinto mine, Minas Gerais, Brazil. Table 3. Interlayer-deficient...spectacular recent find of muscovite was at the Jose Pinto mine, where more than a ton of beautifully crystallized...found at the Harding mine, Taos County, New Mexico (Jahns and Ewing 1977). Fuchsite is a green chromian...crystals). Well-formed silverygreen crystals of fuchsite occur in Karelia, Russia. Phlogopite is a species |  | | Journal (article/letter/editorial) | | (serpentinized peridotite and serpentinite), tremolite‐talc rocks, talc‐carbonate rocks, listwaenite‐like rocks and...ranges in composition from mariposite (>0.5% Cr) to fuchsite (>1% Cr), which indicates typical listwaenites...common tectonic settings were recognized for the (fuchsite/mariposite) forms through potassium metasomatism...country rocks (Uçurum, 2000). In the Barramiya district, listwaenite is ridges ophiolite, ii) Archean...the to peridotites, pyroxenites, chromitites, and talc‐carbonate rocks serpentinite and the underlying |  | | Journal (article/letter/editorial) | | have also been mined in Afghanistan, Australia, Austria, Bulgaria, China, India, Madagascar, Namibia, Nigeria...occurrence in Canada, the Muzo mine in Colombia, the Mohmand district in Pakistan, and Norway. Beryl...to 0.02% were of gem-quality. 89 Since then the mine has been re-opened and closed several times (Walton...al., 2002). Australia's most productive emerald district is a 10 km2 area around the village of Poona in...from the Wodgina tantalum mine in Western Australia (Schwarz, 1991). 5.3. Austria The emerald deposit at |  | | Journal (article/letter/editorial) | | Carbonate Alteration in Basalt, Total Erickson Gold Mine, Cassiar, Northern British Columbia, Canada D. A...Canada V6T 2B4 Abstract The Total Ericksongold mine is in a sequenceof upper Paleozoicto lower Mesozoicmarie...quartz veins. Gresens's THE Total Erickson gold mine, 12 km southeastof (1967) metasomatic equation is...g) from 370,818 tons (337,107 metric tons). The mine is owned and thon, an accretedlate Paleozoicto early...North Amerformationof veinsand alterationtypesin the mine, placedonto autochthonous but it focuseson carb |  | Duuring, P., Hagemann, S. G., Cassidy, K. F., Johnson, C. A. (2004) Hydrothermal Alteration, Ore Fluid Characteristics, and Gold Depositional Processes along a Trondhjemite-Komatiite Contact at Tarmoola, Western Australia. Economic Geology, 99 (3) 423-451 doi:10.2113/gsecongeo.99.3.423 | Journal (article/letter/editorial) | | metamorphosed komatiite and trondhjemite in the Leonora district of the Eastern Goldfields province, Yilgarn craton...-galena-gold-tellurides ± albite ± chlorite ± fuchsite ± epidote ± scheelite. Stage I hydrothermal alteration...chlorite and talc are replaced by ankerite, quartz, muscovite, albite, chlorite, fuchsite, pyrite, chalcopyrite...depths to the site of gold deposition during the district-scale D3 event by shallowly W dipping, reverse...the Leonora district. Introduction THE TARMOOLA gold deposit occurs in the Leonora district, about 265 |  | | Report (issue) | | • . • • . • . . • . . . . • . Baldwin (Kelmac) Mine . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . Swastika (Crescent) Mine . . . . . . . . . . . . . . . • . . . • • . . ....(Golden Gate) Mine . . . . . . . • • . . . • . • . . . . • . . . . . • . . . • . . . . Adams Mine . . . . ... . . . . . • . . . . Barry-Hollinger (Patricia) Mine . . . . • . . . • . • • . . . . . . . . . . . ....(Yama) Mine . . . . . . . . . • . • . • . • . . • . . . . . . • . . . • • . • . • . . Macassa Mine . . |  | Hinsken, Tim, Bröcker, Michael, Strauss, Harald, Bulle, Florian (2017) Geochemical, isotopic and geochronological characterization of listvenite from the Upper Unit on Tinos, Cyclades, Greece. Lithos, 282. 281-297 doi:10.1016/j.lithos.2017.02.019 | Journal (article/letter/editorial) | | occurrences are associated with 19 metabasic phyllites, talc schists, meta-gabbros, ophicalcites and serpentinites...magnesite, quartz and Cr-bearing white 28 mica (fuchsite), but otherwise the transformation of serpentinized...isochrons (different grain- 38 size fractions of fuchsite and magnesite) yielded apparent ages of ca. 16...interpreted to date carbonation and associated fuchsite formation. 40 The new ages indicate that listvenite...words: silica-carbonate alteration; listvenite; fuchsite; Rb-Sr geochronology; Tinos; 56 Greece 2 ACCEPTED |  | | Report (issue) | | Staurolite. Garnet . . . . 20 . 20 Sillimanite Talc ... 22 . 22 Limonite 22 CLAY COUNTY 22 Corundum... Pegmatite Minerals . Corundum Actinolite and Talc Unakite MONTGOMERY COUNTY. Gold, Silver and Copper.... \ 63 Diamond . . . . . ] Garnet Galena Fuchsite and Corundum STOKES COUNTY Itacolumite . ...Actinolite. 0 , f # Minerals of the Hamme-Tungsten District . Amethyst Kyanite 0 \ \ . .."..... . Beryl... Acknowledgment is made to the mineral dealers, mine operators, curators of the several museums of the |  | de Ronde, C. E. J., Spooner, E. T. C., de Wit, Maarten J., Bray, C. J. (1992) Shear zone-related, Au quartz vein deposits in the Barberton greenstone belt, South Africa; field and petrographic characteristics, fluid properties, and light stable isotope geochemistry. Economic Geology, 87 (2) 366-402 doi:10.2113/gsecongeo.87.2.366 | Journal (article/letter/editorial) | | quartz-carbonate, fuchsite-quartz-carbonate _ sulfides,and sericite-quartz-sulfides _ carbonate- fuchsite. Goldappearslate...minimumscaleof •60 x 10 km andfor phaseseparation on a local(mine)scale.Evidencefor phaseseparation is notedby spatiallyrelated...geologichistorythat spansca. 300 and the Three Sisters mine to the northeast,respecm.y., or more. Regionalmetasomatism...moreprevalent than indicated. carbonate _+fuchsite'_+ talc(Fig.3a).Thecontacts are pluton), and southeast(PiggsPeak...respec- TALC-CARBONATE / CHLORITE tively (KamoandDavis, 1991). QUARTZ-CARBONATE Local Mine Geology-AlterationZonation |  | Kazmi, A. H., Lawrence, R. D., Anwar, J., Snee, Lawrence W., Hussain, S. (1986) Mingora emerald deposits (Pakistan); suture-associated gem mineralization. Economic Geology, 81 (8) 2022-2028 doi:10.2113/gsecongeo.81.8.2022 | Journal (article/letter/editorial) | | Structurallythe Mingoraareaiscomposedof three schist,talc-dolomiteschist,and Mingora ophiolite tectonostratigraphic...discussed in this paper (for further serpentinite,or talc-dolomiteschist.Three thrust informationseeKazmi...m•lange,andthe Mingoraophioliticm•lange.North- of talc-chlorite-dolomite schistandcalcareous quartzward...iscomposedof blocksofserpentinite,talc-dolomite andthe Carrel'strench,mine œandmine 3). schist,greenstonemetabasalt...the Mingora Area and 3). The Islamiatrench and mine 2 are straddled Kohistan •c •-•,•--•-,--•.,,•Kohtstan |  | | Journal (article/letter/editorial) | | omitted from locality information. Where lot and district numbers are given, it is necessary to use topographic...the photographs. Baldwin County Milledgeville district—between the State Sanitarium and the Oconee River:...property—near Commerce: ferrocolumbite (Cook, 1978). Lula district—Standridge property, about 7.0 km east of Lula:...Calgary] at 09:55 07 August 2017 Barrow County Arnold mine—1.6 km northeast of Statham, near the head quarters...(chryso lite, olivine) (Teague, 1956). Jefferson district—9.7 km southwest of Jefferson on S.R. 11, northwest |  | Teixeira, João Batista Guimarães, de Souza, Jorge André Braz, da Silva, Maria da Glória, Leite, Carlson Matos Maia, Barbosa, Johildo Salomão Figueiredo, Coelho, Carlos Eduardo Silva, Abram, Maisa Bastos, Filho, Valter Mônaco Conceição, Iyer, Sundaram S.S. (2001) Gold mineralization in the Serra de Jacobina region, Bahia Brazil: tectonic framework and metallogenesis. Mineralium Deposita, 36 (3) 332-344 doi:10.1007/s001260100174 | Journal (article/letter/editorial) | | 1996 have been the mines of the ``Jacobina gold district'', which operated intermittently from the early...Africa, a paleoplacer model for the Jacobina gold district has been historically accepted and had guided...of these rocks contains quartz, sericite, and fuchsite with detrital zircon, non-chromiferous rutile...polycrystalline quartz and, more rarely, of ®ne-grained, fuchsite and rutile-bearing quartzite or coarse-grained...®ne-grained, protocataclastic schists containing talc, serpentine, chlorite, tremolite, and carbonate |  | Dinel, E., Fowler, A. D., Ayer, J., Still, A., Tylee, K., Barr, E. (2008) Lithogeochemical and Stratigraphic Controls on Gold Mineralization within the Metavolcanic Rocks of the Hoyle Pond Mine, Timmins, Ontario. Economic Geology, 103 (6) 1341-1363 doi:10.2113/gsecongeo.103.6.1341 | Journal (article/letter/editorial) | | within the Metavolcanic Rocks of the Hoyle Pond Mine, Timmins, Ontario ETIENNE DINEL,† ANTHONY D. FOWLER...BARR Porcupine Joint Venture, Hoyle Pond Mine, 1 Gold Mine Road, P.O. Box 70, Timmins, Ontario, Canada...dolomite) shear and extension vein arrays. At the mine scale a broad carbonate alteration is evident. Two...alteration zone composed of sericite (muscovite), fuchsite (Cr muscovite), quartz, arsenopyrite, pyrite,...HOYLE POND mine is located 15 km east of downtown Timmins and 3 km north of the Pamour mine in the Porcupine |
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