| | 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 havesimilarSrâą,it,.âąl 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 dâAyas (NW Italy), 1. Pb/Pb evidence for a Piemonte metaophiolite...study on an important one of these veins, Fenilia (Brusson, Val dâAyas), 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 (article/letter/editorial) | PAGANO PO Box 37 Via Oggioni 76 I-20092 Cinisello, Italy renpagan@gmail.com Figure 1 (left). Tiziano Bonisoli...The Tiziano Bonisoli COLLECTION Turin (Torino), Italy Dr. Renato Pagano is a lifelong collector of rare...terminated gem crystal, 13.0 Ă 2.5 cm, from the JaquetĂŽ mine, Medeiros Neto, Bahia, Brazil. Bonisoli specimen...Bonisoli on the top floor of his home in Turin, Italy, is that of a Wunderkammer, an eclectic mix of natural...crystal in quartz, 7.5 Ă 6.0 cm, from the Himalaya mine, San Diego County, California. Bonisoli specimen | | | 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) | 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...Bechaz fluid inclusions, and the rare muscovite and dolomite impurities in the host quartz, the crush-leach...from the Bechaz Gold Mine near Brusson, in Val d'Ayas, northwestern Italy. The mine belongs to the Monte | | 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 (ThĂ©baud 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...UniversitĂ di Padova, via G. Gradenigo 6, 35131 Padova, Italy *Corresponding author, e-mail: paolo.nimis@unipd...chalcopyrite, cv covellite, dg digenite, dol dolomite, ep epidote, gn galena, hem hematite, lin...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 | | | Journal (article/letter/editorial) | settings at 8 localities: an orogenic gold deposit at Brusson, NW Italian Alps (Diamond, 1990); the Colosa porphyryâgold...according to the method in Diamond (1992); and Brusson quartz crystals containing natural fluid inclusions...measured by electron-microprobe on samples from Brusson, Guanajuato, Mole Granite, Mont Blanc and Planggenstock...Beam conditions were 15 kV and 20 nA. For the Brusson sample, the beam spot size was set to 1 ”m diameter...samples from Brusson and the Mole Granite contain sparse solid inclusions (e.g., dolomite, muscovite, | | | Journal (article/letter/editorial) | ïŹuids 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, UniversitaÌ...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... In 1999, AEM Torino S.p.A., owner of the Orco Valley hydropower plants (north-western Italian Alps) | | | Journal (article/letter/editorial) | from hydrothermal veins at the Fenilia gold mine, Brusson, NW Italian Alps, as described by Diamond (1990;...accidentally captured crystallites of muscovite or dolomite. The bulk composition is 90.4â92.2 mol% H2O and...delineating entrapment conditions of all inclusions from Brusson sample locality is taken from Diamond (1990). Extrapolation...paragraphs, in order to compare the behaviour of the Brusson quartz samples with previous experimental studies...natural N2âCO2âH2Oâ NaCl inclusions in quartz from Brusson behave in accordance with previous studies. Changes | | | Journal (issue) | galena, sphalerite, chacopyrite, pyrite, calcite, dolomite); accomodation. Day 4: BanskĂĄ Ć tiavnica â BanskĂĄ...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 dâAosta en Crodo, Val dâOssola zijn prachtige...La Gardette, LâOisan Frankrijk. Goud op kwarts, Aosta dal, ItaliĂ« nautilus info , jaargang 33 Goud op | | | Journal (article/letter/editorial) | ratios of fluid inclusions in a gold-quartz vein at Brusson, Val d'Ayas, northwestern Italian Alps: Comparison...rocks: Barite--sulfide mineralization in the Schwaz Dolomite, Tyrol (Eastern Alps, Austria) H.E. Frimmel (Rondebosch | | | Catalog/List | lllSMUTI-IINl'fE IN CI-IALCOl'YRITI!:, Fowey Consols mine, Tywardreath, Cornwall. I0.5x6.5x4. l cm. A strangely...bismuthinite present. ÂŁ175. 5. BLISTER COPPER, Dolcoath mine, Camborne, Cornwall. 7x7x3cm. A chalcopyrite variety...Cornwall. Fantastic pecimen. ÂŁ275. 13ORNITE, Tincrort mine, Redruth, Cornwall. 8x6x4.6cm. I\ sandy coloured...David New label. ÂŁ275. 7. IJOURNONITE, Herodsfool mine, Lanreath, Cornwall. 6.5x5x3.Jcm. A quartz matrix...specimen. ÂŁ 150. CALCITE ON PYRITE, New Rosewarne mine, Gwincar, Cornwall. 8. S.7x5.5x3cm. A light coloured | | | Journal (article/letter/editorial) | account for the presence of Mn in calcite- and dolomite-type carbonate solid solutions. The activity model...veins Quartz-gold post-metamorphic veins, Brusson district, NW Italy (Yardley et al. 1993) Pyrenean metamorphic...1998) Quartz-gold post metamoprhic veins, NW Italy, Brusson district (Yardley et al. 1993) Fig. 9 Spider...Fluid inclusions from the quartz-gold veins in the Brusson (Monte Rosa) district have a salinity of 4.5â5...lodetype gold-quartz veins in the Brusson (Monte Rosa) district, NW Italy (Yardley et al. 1993; crush-leach | | | Report (chapter) | Environmental Sciences, University of Bologna, Italy 2 Trace Element and Microanalysis Group, ETH ZuÌrich...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...an assemblage of quartz, K-feldspar, calcite, dolomite, sericite, pyrite and scheelite. The maficintermediate...small vein deposits and the large Kanowna Belle mine (Groves et al. 1990). The deposit produced more | | | Catalog/List | Ward Minera! on QUARTZ RHODOCHROSITE District Mine. Climax Climax olTolg-Yole Lake. County. ncredibly...years to find a specimen rhombs rhombs Climax Mine, ot rhodochrosite $50 OOU 60.000 Ex The ... 8 nn ae from the \ slight Âą « nax 1g Mine : The Kevin Ward Mineral Exceptional German...silver was found in the late 1970s at the Dukat Mine measures which is mainly known by 6 cm Ex: Helmut... initely a unique opportunity. From the Dukat Mine, Dukat Gold-Silver Ore Field, Magadan Oblastâ, East | | | Journal (article/letter/editorial) | delineating entrapment conditions of all inclusions from Brusson sample locality is taken from Diamond (1990). Extrapolation...Petrol (2010) 160:845â864 at the Fenilia gold mine, Brusson, NW Italian Alps, as described by Diamond (1990;...accidentally captured crystallites of muscovite or dolomite. The bulk composition is 90.4â92.2 mol% H2O and...of inclusions reported by Diamond (1990) at the Brusson locality (Fig. 1). However, the Pinc values calculated...solutions in late-Alpine gold-quartz veins at Brusson, Val dâAyas, Northwest Italian Alps. Am J Sci 290:912â | | | Journal (article/letter/editorial) | inter-Ordovician unconformity in southwestern Sardinia (Italy): a ÂŻuid inclusion study L. Fedele1 , R. Todesca2...GeoÂźsica e Vulcanologia, Universita di Napoli, Italy Received July 12, 2001; revised version accepted...channels in the shape of potholes Âźlled with rounded dolomite clasts characterize the base of the post-Sardic...fracture-controlled microbreccias penetrate into the dolomite. The ``Quarzite'' horizon, though associated with...Boni M (1985) Les gisements de type Mississippi Valley du Sud-Ouest de la Sardaigne (Italie); une synthese | | | Report (chapter) | Environmental Sciences, University of Bologna, Italy 2 Department of Geosciences, Colorado State University...cm-thick quartz-pyrite-barite-galenasphalerite-dolomite veins. Gold occurs associated with silicified...solutions in late-Alpine gold-quartz veins at Brusson, Val dâAyas, Northwest Italian Alps. American Journal...inclusions and stable isotopic studies at El Sid Gold Mine, Eastern Desert, Egypt. Journal of African Earth...application to the gold-quartz veins at the OâBrien mine, Quebec, Canada. Canadian Journal of Earth Sciences | | | 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 (article/letter/editorial) | oxygen isotope compositions of hydrothermal ferroan dolomite and calcite show systematic depletions with increasing...vein systems: in general, ankerite to ferroan dolomite is prevalent in sub- to greenschist facies deposits...h, and then reacted at 50ÂłC for 24 h to obtain dolomite CO2 [43]. The longterm reproducibilities of N13...C-isotope compositions of hydrothermal ferroan dolomite and calcite are tightly clustered and have similar...systematically 18 O-enriched compared with ferroan dolomite (12.6 ĂŸ 0.4x; n = 8). In mid to upper greenschist | | | Journal (article/letter/editorial) | significant source of atmospheric CO2. The Marsyandi Valley exposes a complete section of high-grade metasedimentary...Tethyan Sediments, where amounts of plagioclase and dolomite are subordinate to calcite, and can be neglected...lowtemperature hydrothermal mounds in the rift valley of the Mohns Ridge (71Âș18' N, 05Âș47' W), have been...Tertiary-Quaternary tholeiite basalt province of the Skagafjördur valley system in northern Iceland, have been used to identify...waters emerging on the east side of the Skagafjördur Valley indicate that they originated as precipitation | | | Journal (article/letter/editorial) | Kerrich/Ore Geology Reviews 12 (1998) 381-453 3.2. Mine scale structure hypotheses have been advanced:...Greeostanes 44,âf 7 Fig. 2. Cross section of the Dome mine orebodies, Timmins, Abitibi SVZ. Note distribution...arsenopyrite; lo = liiellingite; ank = ankerite; do1 = dolomite; cal = calcite; mu = muscovite; bt = biotite;...mineralization are the QT and QF vein systems of the Dome mine, Timmins; the Lamaque and Sigma deposits Val dâOr...Granitoid BIlJ ALBITE Cr-muscovite MAGNESITE/dolomite Mg-chlorite Mg-biotite Muscovite Tremolite ALBITE | | | 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...few small nearby deposits, only the Benitoite Gem mine has commercially produced gem quality benitoite |
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