 | | Journal (article/letter/editorial) | | June-July,1997 No. 4 Oligocene GoldQuartzVeinsat Brusson, NW Alps: Sr Isotopes Tracethe Sourceof Ore-Bearing...tracethe sourceof the ore-bearing fluidat the Brusson loe'ality andto testcurrentgeneticmodels,130RbSr...ruleoutthreeof thepreviously proposed sources for the Brusson fluids:(1) metamorphic devolatilization of paragneisses...syenogranitic intrusions thatcropout 18 km southeast of Brusson havesimilarSr•,it,.•l valuesandarecoevalwiththe...fluidsin the Oligoeene gold-bearing quartzveinsat Brusson, 0361-0128/97/1925/389-1756.00 389 390 PETTKE |  | | Journal (article/letter/editorial) | | Isotope systematics in vein gold from Brusson, Val d’Ayas (NW Italy), 1. Pb/Pb evidence for a Piemonte metaophiolite...study on an important one of these veins, Fenilia (Brusson, Val d’Ayas), which reveals a complex isotope geochemistry...upper Penninic nappe complex through the Arcesa-Brusson window with selected vein gold occurrences of the...profile plane. Gold veins are: Fenilia in the Arcesa-Brusson window,framed, S= Val Sesia; A = Valle Anzasca;...locations refer to Curti ( 1987, his fig. 1). ARF = Aosta-Ranzola Fault. The stur gives the approximate location |  | | Journal (issue) | | PRIVATE MINERAL COLLECTIONS IN ITALY WITH AN INTRODUCTION BY FEDERICO PEZZOTTA CURATOR OF MINERALOGY...JANUARY-FEBRUARY, 2011 PRIVATE MINERAL COLLECTIONS IN ITALY Participating Collectors: Marco Amabili Silvia...Aragonite, 25 cm Cozzodisi mine, Casteltermini, Agrigento, Sicily, Italy. Adalberto Giazotto collection... MINERAL COLLECTING IN ITALY )In OutCine of MINERAL COLLECTING IN ITALY Federico Pezzotta Mineralogy...literature and music, scholars and aristocrats in Italy assembled some of the first great collections of |  | | Journal (article/letter/editorial) | | Schwab. Figure 2 (above). Fluorite, 2.5 cm, La Barre mine, near Pantgibaud, Puy-de-DBme, France. Jean-Franqois...crystals is part of the history of the Chamonix Valley. Unfortunately, there are very few historical documents...used in their manufacture: Switzerland, Austria, Italy, DauphinC, or Mont Blanc. In the history of the...reference to crystal-related activities in the Chamonix Valley. Until the end of the eighteenth century, however...a discovery of pink fluorite in a place in the valley called “Grandes Jorasses.” Later, Alexandre Dumas |  | | Journal (article/letter/editorial) | | ratios of fluid inclusions in a gold-quartz vein at Brusson, Val d'Ayas, northwestern Italian Alps: Comparison...ratios of fluid inclusions in a gold-quartz vein at Brusson, Val d'Ayas, northwestern Italian Alps: Comparison...Quartz from the Bechaz mesothermal Au vein at Brusson, northwestern Italian Alps, is dominated by fluid...from the Bechaz Gold Mine near Brusson, in Val d'Ayas, northwestern Italy. The mine belongs to the Monte...U S I O N S IN A G O L D - Q U A R T Z VEIN AT BRUSSON ple, the total volume of fluid contained in lowXco~ |  | | Journal (article/letter/editorial) | | silvery telluride attributed to the Boly Fields mine, Lumpkin County, Georgia, was available for $800...Tucson Gem and Mineral Show. The tiny Boly Fields mine closed about 1845, and, although the locality is...“the Chukotka digger cooperative alone managed to mine more than 3000 nuggets in the gold-producing season... Bill Forest (former owner of the Benitoite Gem mine), Jendon Minerals, Kristalle, Stefan Stolte, and...reportedly in the Livengood area, from the Valdez Creek mine, streams in the Chicken area, and operations of |  | James-Smith, J., Cauzid, J., Testemale, D., Liu, W., Hazemann, J.-L., Proux, O., Etschmann, B., Philippot, P., Banks, D., Williams, P., Brugger, J. (2010) Arsenic speciation in fluid inclusions using micro-beam X-ray absorption spectroscopy. American Mineralogist, 95 (7) 921-932 doi:10.2138/am.2010.3411 | Journal (article/letter/editorial) | | orogenic Au deposit (low-salinity, ~6 mol% CO2 ± CH4; Brusson, Western Italian Alps); brines from a Proterozoic...regions contain some As in reduced form [As(III) at Brusson and Muiane; As-sulfide or possibly As(0) at Starra]...the Klondike Mine, Pilbara, Western Australia (Thébaud et al. 2006), and >100 ppm at Brusson, Western Italian...Prieto 1 Los Azufres Wairakei East Mesa 0.1 Brusson Muiane Pegmatite 0.01 150 200 250 300 350...(2005)]; and the three deposits studied here: Brusson orogenic gold (Yardley et al. 1993), two hydrothermal |  | | Journal (article/letter/editorial) | | Post-metamorphic gold-quartz veins from N.W. Italy: the composition and origin of the ore fluid B. W...six vein samples from gold-quartz veins in the Brusson district demonstrates that their solute chemistry...gold, quartz, fluid chemistry, fluid inclusions, Italy. Introduction MANY orogenic belts exhibit mesothermal...Monte Rosa district in the northwestern Alps of Italy. The gold--quartz veins of this region, and their...here all come from Val d'Ayas, in the vicinity of Brusson, where individual veins crosscut a wide range of |  | Nimis, Paolo, Omenetto, Paolo, Stasi, Giorgia, Canovaro, Caterina, Dal Sasso, Gregorio, Artioli, Gilberto, Angelini, Ivana (2018) Lead isotope systematics in ophiolite-associated sulphide deposits from the Western Alps and Northern Apennine (Italy) European Journal of Mineralogy, 30 (1) 17-31 doi:10.1127/ejm/2018/0030-2696 | Journal (article/letter/editorial) | | deposits from the Western Alps and Northern Apennine (Italy) PAOLO NIMIS*, PAOLO OMENETTO, GIORGIA STASI, CATERINA...Università di Padova, via G. Gradenigo 6, 35131 Padova, Italy *Corresponding author, e-mail: paolo.nimis@unipd...arsenopyrite, brt barite, bn bornite, cal calcite, cct ‘chalcocites’, chl chlorite, ccp chalcopyrite...restricted to two whole-rock samples from the Brusson area (Combin Zone) studied by Pettke & Diamond...Sartori, R., Scandone, P. (1990): Structural model of Italy: C.N.R., Progetto Finalizzato Geodinamica, scale |  | Ferrando, Simona, Frezzotti, Maria Luce, Orione, Paolo, Conte, Riccardo Carlo, Compagnoni, Roberto (2010) Late-Alpine rodingitization in the Bellecombe meta-ophiolites (Aosta Valley, Italian Western Alps): evidence from mineral assemblages and serpentinization-derived H2-bearing brine. International Geology Review, 52 (10) 1220-1243 doi:10.1080/00206810903557761 | Journal (article/letter/editorial) | | rodingitization in the Bellecombe meta-ophiolites (Aosta Valley, Italian Western Alps): evidence from mineral...Torino , Turin, Italy b Department of Earth Sciences , University of Siena , Siena, Italy Published online:...rodingitization in the Bellecombe metaophiolites (Aosta Valley, Italian Western Alps): evidence from mineral...rodingitization in the Bellecombe meta-ophiolites (Aosta Valley, Italian Western Alps): evidence from mineral...Torino, Turin, Italy; b Department of Earth Sciences, University of Siena, Siena, Italy Downloaded by |  | | Journal (article/letter/editorial) | | fluids in the crystalline Gran Paradiso Massif (Orco Valley, north-western Italian Alps): tectonic and geochemical...di Torino, via Valperga Caluso 35, 10125 Torino, Italy b Dipartimento di Scienze della Terra, Università...Ferrata 1, 27100 Pavia, Italy c SEA Consulting s.r.l., via Cernaia 27, 10121 Torino, Italy Received 7 October...handling by H. Armannsson Abstract In the Orco Valley, inside the Gran Paradiso Massif, 3 main fault...mostly consisting of carbonate (siderite–ankerite calcite)+ quartz with sulphide–Au mineralisation, recording |  | | Journal (article/letter/editorial) | | sometimes present, the feldspar-absent paragonite-calcite and paragonitedolomite assemblages are more common...a massive texture of coarse-grained quartz and calcite as the vein filling, whereas chlorite is conspicuously...protruding into open space, including mainly quartz, calcite, and chlorite (Fig. 2d). The overall vein shape...165:981–1008 (a) 985 (b) calcite quartz 1m foliation parallel veins (c) (d) calcite quartz foliation...Coarse-grained quartz is intergrown with Fe-bearing calcite. c Example of a set of open-fissure veins intersecting |  | | Journal (article/letter/editorial) | | modern. century). Calandais locatedin the Rhine valley, in the au- of the Geneva area. Placer depositsalsooccurin...calcareousAlps: Calanda, Grisons The abandonedCalandagold mine was described in the lastcentury(Kenngott,1866)...newly discoveredDisentisdeposit;ß = city site; • -- mine location. (Dogger) age. The emplacementof the veins...undergroundsampling in abandonedstopesand pillars of the Robert mine (Woodtli et al., 1987, p. 122) whichwasundertaken...1961) locatedmainly to the southof the Vorderrhein valley. This unit is 35 km long and 2 to 5 km wide. It |  | | Catalog/List | | lllSMUTI-IINl'fE IN CI-IALCOl'YRITI!:, Fowey Consols mine, Tywardreath, Cornwall. I0.5x6.5x4. l cm. A strangely...bismuthinite present. £175. 5. BLISTER COPPER, Dolcoath mine, Camborne, Cornwall. 7x7x3cm. A chalcopyrite variety...Cornwall. Fantastic pecimen. £275. 13ORNITE, Tincrort mine, Redruth, Cornwall. 8x6x4.6cm. I\ sandy coloured...David New label. £275. 7. IJOURNONITE, Herodsfool mine, Lanreath, Cornwall. 6.5x5x3.Jcm. A quartz matrix...as well. Great specimen. £ 150. CALCITE ON PYRITE, New Rosewarne mine, Gwincar, Cornwall. 8. S.7x5.5x3cm |  | | Journal (article/letter/editorial) | | form minerals with Ca (e.g. fluorite, apatite, calcite and gypsum or anhydrite), and saturation with these...91 1. H20-CO2 Ore fluid, Au-quartz vein, Brusson, N. Italy, T = c. 270~ (Yardley et al., 1993, sample |  | | Catalog/List | | memories are of collecting quartz in Montana, calcite in Utah, silver, galena, sphalerite, and amethyst...Ward Mineral Collection 7 (ener weapYILVER, CALCITE, & ACANTHITES L Kongsberg Silver Mines — ' Kongsberg...combination of native wire silver growing atop calcite crystals with acanthite. This represents one of...there are two absolutely perfect rhombs of white calcite with sharp crystals of gray acanthite to the left...Ward Minera! on QUARTZ RHODOCHROSITE District Mine. Climax Climax olTolg-Yole Lake. County. ncredibly |  | | Report (chapter) | | Environmental Sciences, University of Bologna, Italy 2 Trace Element and Microanalysis Group, ETH Zürich...Physics and Earth Sciences, University of Parma, Italy *Corresponding author (e-mail: paolo.garofalo@unibo...orogenic fluids. The Berezovskoye deposit With a mine history longer than 250 years and a total production...altered to an assemblage of quartz, K-feldspar, calcite, dolomite, sericite, pyrite and scheelite. The...occupy more than 95% of vein volume at Sigma, with calcite, scheelite, albite, K-feldspar, sericite, biotite |  | GRAUPNER, T., KEMPE, U., SPOONER, E. T. C., BRAY, C. J., KREMENETSKY, A. A., IRMER, G. (2001) Microthermometric, Laser Raman Spectroscopic, and Volatile-IonChromatographic Analysis of Hydrothermal Fluids in the PaleozoicMuruntau Au-Bearing Quartz Vein Ore Field, Uzbekistan. Economic Geology, 96 (1) 1-23 doi:10.2113/gsecongeo.96.1.1 | Journal (article/letter/editorial) | | sulfides; quartz-arsenopyrite Au; adularia-quartz Ag; calcite (-brookite?); Berger et al., 1994; Kostitsyn, 1996)...gold are the major ore minerals with associated calcite, apatite, light yellow to dark brown scheelite...contamination of the quartz samples with submicroscopic calcite inclusions. This is confirmed by petrographic investigations...have Br/Cl ratios that are very similar to the Brusson postmetamorphic (Yardley et al., 1993) and the...to be the source of the fluids involved in the Brusson Au deposit; however, they suggested a fluid origin |  | | Journal (issue) | | Articles Famous mineral localities: the Taewha mine, K orea...........................................COVER: WULFENITE with mimetitefrom the San Francisco mine near Magdalena, Sonora, Mexico. The large crystal...Alfredo Ferri, / Sassi de Alfredo Ferri (Milan, Italy) Chris and Agatha Galas, Galas Minerals (Delhi,...Himalaya mine, Mesa Grande, California Tourmaline Queen mine, Pala, California Pala Chief mine, Pala, California...Ledge mine, Washington, California Benitoite Gem mine, San Benito Co., California U.S. Borax mine, Boron |  | | Journal (issue) | | crystals, galena, sphalerite, chacopyrite, pyrite, calcite, dolomite); accomodation. Day 4: Banská Štiavnica...Bolzano Province, South Tirol, Italy - Chalcanthiet, San Antonio Mine (East Camp), Santa Eulalia, Chihuahua...Chihuahua, Mexico - Malachiet (+ Calciet), Ogonja Mine, Seels, Windhoek District, Namibia - Chabaziet,...natuur historisch museum van Turijn gevonden in Brusson , Val d’Aosta en Crodo, Val d’Ossola zijn prachtige...La Gardette, L’Oisan Frankrijk. Goud op kwarts, Aosta dal, Italië nautilus info , jaargang 33 Goud op |  | | Journal (article/letter/editorial) | | yields doubtful results in metamorphic lithologies calcite-quartz in mafic metavolcanic rocks, (2) sericitewithout...te-rutilein phyllites and (3) quartz-sericite-calcite-K-feldspar- calculations (cf. Touret, 2001; Kolb...inclusions in the ‘gash’ veins quartz veins at Brusson, Val d‘Ayas, northwest Italian Alps. subsequent...Untertagekartierung der Hutti-Mine und Kartierung des Tagebaus der Ajjanahalli-Mine in Sudindien (Diplomkartierung)...in a first order shear zone: The Ajjanahalli gold mine (Dharwar Craton, South India). Transactions of the |  | | Journal (article/letter/editorial) | | ratios of fluid inclusions in a gold-quartz vein at Brusson, Val d'Ayas, northwestern Italian Alps: Comparison...transfer model for dissolution and precipitation of calcite from solutions in turbulent motion W. Dreybrodt |  | | Report (chapter) | | zones. The limestone layer contains many thin calcite veins with displacements < 1 mm. All veins that...Extension is associated with a series of N 160~ calcite and Fe-carbonate veins. Three traverses, taken...important component of mineralized shear zones at Brusson, northwest Alps. At La Codosera, the gold mineralization...extraction of ore occurring only at the La Parilla mine [c. 6000tonnes of Sn (0.2wt%) and WO3 (0.05wt%)]...DIAMOND, L. W. 1997. Oligocene gold quartz veins at Brusson, NW Alps: Sr isotopes trace the source of ore-bearing |  | | Journal (issue) | | also: Collector interview: Adalberto Giazotto (Italy) Golden calcites from Malmberget INTRODUCTION...famous European collectors: Adalberto Giazotto from Italy. Adalberto has been building his collection for...Butterfly Twin Pocket, 1989. Malmberget mine, Sweden. Benitoite Gem mine, USA Editors: Tomasz Praszkier (Poland)...an iron mine in the polar region of northernmost Sweden two decades ago. The Malmberget mine located...1988-89 two extraordinary pockets with golden calcite crystals were discovered. Specimens from these |  | | Report (chapter) | | gold mine. Gold anomalies in drillcores are identified updip and downdip from the current mine workings...lower. The comprehensive gold assay data from the mine, which are integrated with structural observations...constrain the 3D geometry of the deposit and assess the mine-scale geochemical, lithological and structural controls...et al. 2016). Nalunaq Mountain, in the Kirkespir valley of the Nanortalik Peninsula, an area noted for...Kaltoft et al. 2000; Steenfelt 2000). The Kirkespir valley consists of meta-psammite material, lithologies |
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