 | | Journal (article/letter/editorial) | | contact zone of the Trimouns talc/chlorite deposit, where large-scale mining for talc may now be approaching...approaching its end. INTRODUCTION The Trimouns talc-chlorite deposit is a mineral locality of international significance...above it. Because of the heavy winter snowfalls, talc is quarried for only 6 months of the year, from...Tinto Zinc (RTZ), the worldâs foremost producer of talc at 1.3 million tonnes per year. The quarry employed...ore was hand-sorted (de Launay, 1913). Today the talc is quarried by modern hydraulic shovels, and the |  | | Journal (issue) | | Bastnas Mines, Riddarhyttan Ore Field, Bergslagen District, Vastmanland, Sweden ........... 187 by L. Ohman...mm; (lower left) IIMORIITE-(Y) crystal, 2 mm-All from the Trimouns talc quarry near Luzenac, France (see...BASTDAS ffiIDES RIDDARHYTTAD ORE FIELD, BERGSLAGED DISTRICT, VASTffiADLADD, SillEDED Lennart Ohman Hi:igviltsvagen...dumps, about 30 meters from the Sankt Goransgruvan mine. The zone contained many cerium minerals, as well...I (Gustav Vasa). The last active iron and copper mine, Biickegruvan, was closed by its owner, Fagerstabruk |  | | Journal (article/letter/editorial) | | extending from Belgium, in the West, through the Ruhr District, Germany, to the Upper Silesian Coal Basin, Poland...layer-type (e.g. serpentine), 2:1 layer-type (e.g. talc), 2:1:1 (2:2) layertype (e.g. chlorite) and 2:1...deposits: (1) Serpentine-kaolinite/kandite group, (2) Talc- pyrophyllite group, (3) smectite group, (4) mica...heat source at temperatures between 600°C and 500°C talc, actinolite, anthophyllite and carbonates developed...2012). 4.2 Talc-pyrophyllite group 4.2.1 Talc subgroup Similar to the serpentine s.s.s, talc [Mg3Si4O10(OH)2] |  | Varlamov, D. A., Ermolaeva, V. N., Chukanov, N. V., JanÄev, S., Vigasina, M. F., Plechov, P. Yu. (2019) New Data on Epidote-Supergroup Minerals: Unusual Chemical Compositions, Typochemistry, and Raman Spectroscopy. Geology of Ore Deposits, 61 (8) 827-842 doi:10.1134/s1075701519080130 | Journal (article/letter/editorial) | | clinopyroxenes, amphiboles, phlogopite, chlorite, and talc. Among the accessory minerals in these associations...minerals of these samples are cellular zoned baryte, talc, and clinopyroxene. In Sample 5, piemontite, âferripiemontiteâ...almeidaite (4), zincohögbomite (5), and Zn-bearing talc (6) (Sample 7); (c) grains of epidote-supergroup...pfu occur in barite and associate with Zn-bearing talc, zincohögbomite, gahnite, tripuhyite, almeidaite...and muscovite, as well as accessory xenotime-(Y), chernovite-(Y), gasparite-(Nd), ardennite, and different |  | | | | rutherfordine 53 linarite 59, 60 liroconite 74 talc 102 talc, precious 104 orthite 88 orthoclase 93, 95...wollastonite 100, /00 wulfenite 64, 64, 74 wurtzite 11 xenotime 65 zeolites 114 zeunerite 74 zincite 23 zine vitriol...especially near Kimberley); diamonds from the Kimberley mine are embedded in ultrabasic blue rock called kimberlite...carats, equal to 621 grams) was found at the Premier Mine; named the Cullinan diamond, it was presented to...found at Butte, Montana, and the Copper River district of Alaska. A much rarer mineral is covellite, |  | | Book | | A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...fingernail is 2 and a steel nail is 5. For example, talc, which is 1 on the scale, is extremely soft and...Africa * 19 x 6 x 83cm Hardness 1 Hardness 4 Talc Fluorite Fluorite, Madoc, Ontario, Canada « 55...mineral pigments. LEFT: Malachite, Bwana MâKubwa Mine, Ndola, Copperbelt, Zambia * 22 x 26 x 16 cm 22...Namibia * 20 x 18 x 14 cm Bladed stibnite, Ichinokawa Mine, Saijo, Shikoku, Japan * 10 x 1 x 1 om Acicular |  | | Journal (article/letter/editorial) | | Mineralogy of the Alpine-type Fissures and Talc Deposit at All photos and crystal drawings by LĂĄszlĂł...half of the open pit of the former Broughton talc mine, Saint-Pierre-de-Broughton, September 2005. Figure...article documents a second locality, an abandoned talc mine at Saint-Pierre-de-Broughton, and also gives a...region. The mine at Saint-Pierre-de-Broughton has been known for many years as a soapstone and talc producer...Eventually, the locality was revealed as the Broughton talc mine, and we were given a much-appreciated op- S |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...Strunz since 1941 (Strunz and Nickel 2001): âą Subsidim-y anions (OH,F,O) are positioned before the complex...reflected light (e.g. micas). or flexible (e.g. talc) minerals. In crystal optics for reflected light...ability of a mineral to scratch another one: 1 - talc, 2 - relative ability of an opaque mineral to reflect...dept. (departement), dept. (departamento), dist. (district). Less common terms are not abbreviated, e.g. |  | | Journal (article/letter/editorial) | | hostto the ore at 2717 _ 2 Ma (Barrie and Davis, xenotime were recently identified in the chlorite- 1990)...1990). The abundanceof monazite and xenotime in sericite-biotite alterationzonearoundtheKiddCreek, the...undergroundmine at Kidd Creek dance of monazite and xenotime in the chlorite and (Schandlet al., 1991) andon...Winston Lake deoccurrenceof hydrothermalmonaziteand xenotime posits(Schandlet al., 1990c) indicates,however...accessory mineralsmonazite(light BEF.phos- phate)and xenotime(Y + heavyREE phosphate) Althoughrare earth elementsand |  | Moelo, Y., Lulzac, Y., Rouer, O., Palvadeau, P., Gloaguen, E., Leone, P. (2002) SCANDIUM MINERALOGY: PRETULITE WITH SCANDIAN ZIRCON AND XENOTIME-(Y) WITHIN AN APATITE-RICH OOLITIC IRONSTONE FROM SAINT-AUBIN-DES-CHATEAUX, ARMORICAN MASSIF, FRANCE. The Canadian Mineralogist, 40 (6) 1657-1673 doi:10.2113/gscanmin.40.6.1657 | Journal (article/letter/editorial) | | MINERALOGY: PRETULITE WITH SCANDIAN ZIRCON AND XENOTIME-(Y) WITHIN AN APATITE-RICH OOLITIC IRONSTONE FROM...has been identified with scandian zircon and xenotime-(Y) in an apatite-rich oolitic Ordovician ironstone...They reveal complex zoning due to incorporation of Y and HREE, as well as to an extended solid-solution...Characteristic compositions in the pretulite â xenotime-(Y) â zircon system are: Prl 0.973Xnt 0.020Zrn 0...solid-solution between zircon and pretulite. Xenotime-(Y), also epitactic on zircon, shows distinct stages |  | | Journal (article/letter/editorial) | | ferridissakisite-(Ce)*,$ allanite-(La), -(Ce), -(Nd), -(Y) ferriallanite-(La), -(Ce) vanadoallanite-(La) akasakaite*...Gatelite-(Ce) Trimouns talc mine, Luzenac, ArieÌge, France (type locality) aeschynite-(Y), toÌrnebohmite-(Ce)...toÌrnebohmite-(Ce), dissakisite-(Ce), dolomite, talc, quartz, pyrite 100 Ma (a) VaÌstmanlandite-(Ce) Norberg Fe...fluorbritholite-(Ce), dollaseite-(Ce), gadolinite-(Y), gadolinite-(Nd), ulfanderssonite-(Ce), tremolite...bastnaÌsite-(Ce), fluorthalenite-(Y), kuliokite-(Y), hundholmenite-(Y), fluorbritholite-(Y), fluorite 400 Ma (e |  | Prokopyev, Ilya R., Doroshkevich, Anna G., Sergeev, Sergey A., Ernst, Richard E., Ponomarev, Jean D., Redina, Anna A., Chebotarev, Dmitry A., Nikolenko, Anna M., Dultsev, Vladislav F., Moroz, Tatyana N., Minakov, Alexey V. (2019) Petrography, mineralogy and SIMS U-Pb geochronology of 1.9â1.8 Ga carbonatites and associated alkaline rocks of the Central-Aldan magnesiocarbonatite province (South Yakutia, Russia) Mineralogy and Petrology, 113 (3) 329-352 doi:10.1007/s00710-019-00661-3 | Journal (article/letter/editorial) | | Accepted: 15 March 2019 # Springer-Verlag GmbH Austria, part of Springer Nature 2019 Abstract The N-S...siderite aggregates with haematite, monazite-(Ce), xenotime-(Y), rutile-(Nb), barite-(Sr), anhydrite, ancylite-(Ce)... celestite, anhydrite, thorite, thorianite, xenotime-(Y), siderite, pyrite, chalcopyrite, galena and...Chlorite, muscovite, epidote, rutile, tourmaline and talc form the metamorphic minerals. Muostalaah and Birikeen...include chlorite, muscovite, amphibole, epidote and talc (Table 1). Primary carbonatite minerals In the Muostalaah |  | Cabral, Alexandre Raphael, TupinambĂĄ, Miguel, Zeh, Armin, Lehmann, Bernd, Wiedenbeck, Michael, Brauns, Michael, Kwitko-Ribeiro, Rogerio (2017) Platiniferous goldâtourmaline aggregates in the goldâpalladium belt of Minas Gerais, Brazil: implications for regional boron metasomatism. Mineralogy and Petrology, 111 (6) 807-819 doi:10.1007/s00710-017-0496-0 | Journal (article/letter/editorial) | | source for ages: (1) UâPb age of 496.3 ± 2.0 Ma for xenotime from sulphideâquartzâtourmaline (carvoeira) lode...determined on euhedral grains of hydrothermal xenotime within the tourmaline lode; this Cambrian age...mineralisation (Cabral and Zeh 2015a). The Itabira district has giant iron-ore deposits within the CauĂȘ Itabirite...Monazite from a jacutinga lode in the Itabira district yields a UâPb age of 495.6 ± 2.2 Ma (Cabral et...analytical uncertainty to the age obtained for xenotime grains in the Passagem de Mariana carvoeira. |  | | Journal (article/letter/editorial) | | JanuaryEebruary: Cerussite and fluorite, Blanchard mine, Socorro County, New Mexico. Peter J. Modreski photo...photo. MarchlApril: Wulfenite, Red Cloud mine, Arizona. Vienna Natural History Museum specimen, 0. Medenbach...Medenbach photo. May/June: Legrandite, Ojuela mine, Mapimi, Durango, Mexico. Houston Museum of Natural...tetrahedrite, chalcopyrite, and quartz, Sweet Home mine, Alma, Park County, Colorado. Martin Zinn specimen...Scovil photo. NovemberDecember: Silver, Bulldog mine, Mineral County, Colorado. F. John Barlow specimen |  | | Book | | (Abforming durch AusfuÌllung); e.g., the famous talc pseudomorphs after quartz crystals from GoÌpfersgrun...malachite after azurite b. taking up a component; e.g., talc after quartz c. replacement (austausch) of a component;...Ca(1) site (ninefold coordination), whereas the (Y ĂŸ heavy rare earth elements, HREE) favor the Ca(2)...coupled cation substitution reactions comprising (Y ĂŸ rare-earth elements [REE]) are possible (Harlov...common FAP (Y ĂŸ REE) are mainly charge-balanced through two coupled cation substitutions NaĂŸ ĂŸ (Y ĂŸ REE)3ĂŸ |  | Szuszkiewicz, Adam, Pieczka, Adam, Gadas, Petr, VaĆĄinovĂĄ-GaliovĂĄ, Michaela, SzeĆÄg, Eligiusz, GoĆÄbiowska, BoĆŒena, GaluskovĂĄ, Dagmar (2019) First occurrence of Mn-dominant cordierite-group mineral: electron microprobe and laser ablation ICPMS study. The Canadian Mineralogist, 57 (5) 807-810 doi:10.3749/canmin.ab00027 | Journal (article/letter/editorial) | | Szklary pegmatite crops out in the abandoned nickel mine (50839 0 N; 16850 0 E) ~60 km south of WrocĆaw,...regarded as a representative of this pegmatite district that formed from the LCT melt injected into the...and post-biotitic clinochlore (6 vermiculite and talc), with minor tourmaline, spessartine garnet and...2000). A few centimeters thick vermiculite-chlorite-talc exocontact is present. Centimetersized xenoliths...dravitic tourmaline, epidoteâallanite-(Ce), zircon, xenotime(Y), beryl, NbTa-enriched rutile and ilmeniteâpyrophanite |  | | Journal (article/letter/editorial) | | photos. September/October: Silver crystals, Bachelor mine, Amethyst vein system, Mineral County, Colorado;...Actinolite, Quebec, 498 Adamite, Nevada, 514 Agarditeâ(Y), Nevada, 515 Agate (fire), Arizona, 22 Agate, Turkey...413; Nevada, 515 Annabergite, Kilometer 3 Mine, Laurium District, Greece, R. B. Cook, 154â59 Apatite, nomenclature...Connoisseurâs Choice, Annabergite, Kilometer 3 Mine, Laurium District, Greece, R. B. Cook, 154â59; Calaverite...Exploration and Mining History of the de Linde Wavellite Mine, East Dug Hill Area, Near Avant, Garland County |  | Harlov, Daniel E., Meighan, Corey J., Kerr, Ian D., Samson, Iain M. (2016) Mineralogy, Chemistry, and Fluid-Aided Evolution of the Pea Ridge Fe Oxide-(Y + REE) Deposit, Southeast Missouri, USA. Economic Geology, 111 (8) 1963-1984 doi:10.2113/econgeo.111.8.1963 | Journal (article/letter/editorial) | | Fluid-Aided Evolution of the Pea Ridge Fe Oxide-(Y + REE) Deposit, Southeast Missouri, USA* Daniel E...with the presence of several rare earth element (Y + REE)-rich breccia pipes. In many cases, the fluorapatite...and quartz inclusions, plus minor xenotime. Monazite and minor xenotime are also found intergrown as inclusions...Monazite and xenotime typically occur as inclusions within both oxides. Monazite-(Ce) and xenotime(Y) are both...differences exist in the (Y + REE) chemistry between monazite and xenotime inclusions in fluorapatite |  | | Journal (article/letter/editorial) | | present study, mineralogy and geology act as x- and y-coordinates of a classiïŹcation chart of mineral resources...encompassing minerals and elements are plotted along the y-axis, forming the lines of the spreadsheet. These.... . . . . . . . . . . . . . . . . . . . 51.2.2. Talc-pyrophyllite . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . 51.3.2. Talc-pyrophyllite . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . 51.4.3. Talc. . . . . . . . . . . . . . . . . . . . . . . . | | | Journal (article/letter/editorial) | | present study, mineralogy and geology act as x- and y-coordinates of a classiïŹcation chart of mineral resources...encompassing minerals and elements are plotted along the y-axis, forming the lines of the spreadsheet. These.... . . . . . . . . . . . . . . . . . . . 51.2.2. Talc-pyrophyllite . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . 51.3.2. Talc-pyrophyllite . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . 51.4.3. Talc. . . . . . . . . . . . . . . . . . . . . . . . |  | Prokopyev, I.R., Doroshkevich, A.G., Ponomarchuk, A.V., Sergeev, S.A. (2017) Mineralogy, age and genesis of apatite-dolomite ores at the Seligdar apatite deposit (Central Aldan, Russia) Ore Geology Reviews, 81. 296-308 doi:10.1016/j.oregeorev.2016.10.012 | Journal (article/letter/editorial) | | hydrothermal stages with quartz, calcite, monazite-Ce, xenotime-Y, haematite, thorite, thorianite, sulphates and...ores, the silicate minerals are mainly phlogopite, talc, actinolite, and secondary quartz. Next, there is...range of elements: Ca, Mg, Mn, Fe, Sr, Ba, Th, U, Y, Nb, K, Na, Si, Al, Zr, Hf, Ti, La-Lu. To assess the...barite-celestine, anhydrite, thorite, TE thorianite, xenotime-(Y), siderite, pyrite, and galena are present as...minerals. Chlorite, muscovite, epidote, rutile and talc are metamorphic minerals. Representative compositions |  | | Journal (article/letter/editorial) | | 2004 Exsolution of thortveitite, yttrialite, and xenotime during low-temperature recrystallization of zircon...quartz, Fe-oxy-hydroxide, smectite, chlorite, xenotime-(Y), thortveitite, yttrialite, and allanite-(Ce)...we suggest that thortveitite, yttrialite, and xenotime-(Y) formed as a result of trace-element expulsion...trivalent cations (REE, Y, Sc) in zircon cannot be charge-balanced by xenotime substitution alone. Pentavalent...including Hf, P, U, Th, rare-earth elements (REE), and Y (e.g., Speer 1980; Hoskin and Schaltegger 2003). Hafnium |  | | Journal (article/letter/editorial) | | Gogebic iron range, home of the well-known Montreal mine in Wisconsin. (My collecting experience has not...the town of Negaunee, and the first mine to open was the Jackson mine in 1845 (Boyum 1983).At that time...in the early years were identified only as to district or range (e.g., âIron Riverâ or âMarquette Rangeâ);...âMicromineral Collectors and Extinct Mines: The Buckhorn Mine, New Mexicoâ and appeared in the January/February...today are much more meticulous in recording accurate mine information. Each of the four Iron Country counties |  | | Journal (article/letter/editorial) | | toward the contact with the Alta Stock, include the talc, tremolite, forsterite, and periclase zones. These...determine the minerals present and habit of each. Talc Zone: This zone, the most distal metamorphic zone...stock, experienced only low-grade metamorphism. Talc, Mg3(Si4O10)(OH)2, and calcite formed by the reaction...(chert nodules less than 1 cm). Massive calcite and talc, both as crystals and microscopic masses, occur...than predicted from the starting chemistry of the MINE APATITE HALOGEN CHEMISTRY. S. R. Kelly1, experimental |  | | Book (chapter) | | magnesite + quartz, HorvĂĄth 290 (2003). Yalck = talc, Clark 683 (1993). YAlG = synthetic gem garnet Y3Al2[AlO4]3...Robertson 35 (1954). Y-bastnaesite = bastnĂ€site-(Y), Pekov 36 (1998). yberisilite = hingganite-(Y), AM 71, 605...montmorillonite, CCM 30, 115 (1982). Y-Ca carbonate = kamphaugite-(Y), de Fourestier 383 (1999). yedlinite...132 (2007). yellow yttrotantalite = fergusonite-(Y), Egleston 125 (1892). Yenerit = boulangerite, AM...yetmanite = yeatmanite, Clark 766 (1993). yftisite-(Y) = yftisite, Fleischer 202 (1987). yftisite (discredited) |
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