 | | Journal (article/letter/editorial) | | Biella;T = Traversella) PL = Periadriatic Line ARF = Aosta - Ranzola Fault yieldconstraints onthe Sri,it•...andtheoverly- Sr ISOTOPESIN Au VEINS, BRUSSON,N•V ITALY NW Brusson 391 nappes Other Penninic basement•...metaear- bonates. The areais dissected by the Aosta-Ranzola fault (Figs.1,3, and4), a majoreast-west-trending...(detailof boxin veinssampled forthisstudy: Fenilia,Bechaz, Trivera,Mac, havedemonstrated that the inclusions...andSr concentra-3veins inthearea).Thestarsouthof Bechaz denotes theinvestigated lampro- tionsin the hydrothermal |  | | Journal (article/letter/editorial) | | the same natural quartz sample. Quartz from the Bechaz mesothermal Au vein at Brusson, northwestern Italian...analytical methods. Despite the low salinity of the Bechaz fluid inclusions, and the rare muscovite and dolomite...under the P-T conditions of immiscibility in the Bechaz vein ( ~ 230 °C and 600 bar), liquid-vapour fractionation...collected from the Bechaz Gold Mine near Brusson, in Val d'Ayas, northwestern Italy. The mine belongs to the...(Diamond and Wiedenbeck, 1986). Quartz from the Bechaz veins was chosen for a comparison of analytical |  | 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) | | Tectonophysique, UMR CNRS Université Joseph Fourier, 38400 Saint-Martin-d’Heres, France 7 Géobiosphère Actuelle et...fluids: up to in excess of 1700 ppm As at the Klondike Mine, Pilbara, Western Australia (Thébaud et al. 2006)...fluids to high-salinity brines. Bechaz Gold Mine, Brusson Deposit, Italy—typical “orogenic” Au vein “Orogenic”...aqueous-carbonic fluids (0.05–0.25 xCO2). The Bechaz gold mine exploits ~32 Ma old quartz veins that transect...mineralization-stage in quartz, anhydrite, and calcite deposited at 220 to 360 °C (Rotherham 1997; Williams |  | | Journal (article/letter/editorial) | | Post-metamorphic gold-quartz veins from N.W. Italy: the composition and origin of the ore fluid B. W...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...Orbeill. Gaebian. Fenilia Fenilia Fenilia Bechaz Metabasalt Granitegneiss Graphi[e micaschist...002 Notes: LD888, Fenilia (see part a); LD927, Bechaz; LD 928, Orbeillaz. Fluid Inclusion Generations: |  | | Book (volume) | | modificazioni cristalline (e quindi mi nerali: vedi calcite e aragonite, ecc.; vedi anche pag. 72). diorite...con cristallini esagonali di calcite. Monte Rosso di Verra, presso Saint Jacques, Champoluc, Val d'Aosta...aghi sottili, anche in Val d ' Aosta (Montjo vet e Bellecombe presso Saint Vincent, Monte Rosso di Verra...si trova rararnente nella miniera di Saint Marcel in Val d' Aosta, come localita unica al mon do. Il violano...pirosseni : 1 - Fassaite, tipici cristalli opachi, con calcite biancastra. Toal de la Foia, Monzoni (ca. 2x) |  | | Book (volume) | | modificazioni cristalline (e quindi mi nerali: vedi calcite e aragonite, ecc.; vedi anche pag. 72). diorite...parziale delle fessure si puo trovare anche la calcite, non d i rado ben cristallizzata. In quantita subordinata...lVli11era/i sempre presenti, come ii la clorite e la calcite; ria, 1 'albite, 2) 1Vli11erali « guida •• e...interessanti, quali soprattutto la dolomite, la calcite, il quarzo e - come minerali accessori - il rutilo...caratteristica e curiosa varieta spa tica di calcite azzurra. Si ha soprattutte vesu vianite , granato |
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