 | Garavelli, A., Pinto, D., Vurro, F., Mellini, M., Viti, C., Balic-Zunic, T., Ventura, G. D. (2009) YUKONITE FROM THE GROTTA DELLA MONACA CAVE, SANT'AGATA DI ESARO, ITALY: CHARACTERIZATION AND COMPARISON WITH COTYPE MATERIAL FROM THE DAULTON MINE, YUKON, CANADA. The Canadian Mineralogist, 47 (1) 39-51 doi:10.3749/canmin.47.1.39 | Journal (article/letter/editorial) | | 1.39 YUKONITE FROM THE GROTTA DELLA MONACA CAVE, SANT’AGATA DI ESARO, ITALY: CHARACTERIZATION AND COMPARISON...Geomineralogico, Università di Bari, Via E. Orabona 4, I–70125 Bari, Italy Marcello MELLINI and Cecilia...Dipartimento di Scienze della Terra, Università di Siena, Via Laterina 8, I–53100 Siena, Italy Tonci BALIĆ-ŽUNIĆ...Denmark Giancarlo DELLA VENTURA Dipartimento di Scienze Geologiche, Università di Roma Tre, Largo S.... Leonardo Murialdo 1, I-00146 Rome, Italy Abstract We report the first Italian occurrence of yukonite |  | Gomez, M.A., Becze, L., Blyth, R.I.R., Cutler, J.N., Demopoulos, G.P. (2010) Molecular and structural investigation of yukonite (synthetic & natural) and its relation to arseniosiderite. Geochimica et Cosmochimica Acta, 74 (20) 5835-5851 doi:10.1016/j.gca.2010.07.023 | Journal (article/letter/editorial) | | originating from Tagish Lake (Canada) and Grotta della Monaca (Italy) for comparison, and its structural relation...spectroscopy, was found to have a H-bonding system as in scorodite and exhibit an extra arsenate mode indicative...solutions, fixation of arsenic in the form of scorodite by controlled precipitation may be adopted (Filippou...Fe(III)–As(V) co-precipitate and crystalline scorodite to yukonite (Ca2Fe3(AsO4)4(OH)12H2O). For example...study, Bluteau et al. (2009) found crystalline scorodite (FeAsO42H2O) to partially transform to yukonite |  | | Journal (article/letter/editorial) | | and lepidocrocite. As far as typical yukonite, scorodite or arsenosiderite are absent in the studied weathered...Introduction to Fe arsenates such as crystalline scorodite, kaňkite (FeAsO43.5H2O) and pharmacosiderite...Venus mine in Yukon, Canada, from the Grotta Della Monaca cave in Italy (Garavelli et al., 2009) and the Nalychevskie...transformed into scorodite in acidic condition during the major oxidizing event, and finally scorodite is destabilized...Ca–Fe arsenate phase. Finally, the pre-existing scorodite was destabilized by the alkaline pore fluids with |  | | Journal (article/letter/editorial) | | coexist with symplesite, parasymplesite, and scorodite. Scorodite is white and opaque, and occurs as pseudomorphs...T. and Della Ventura, G. (2009) Yukonite from the Grotta della Monaca cave, Sant’Agata di Esaro, Italy:...173–180 (in Japanese). Ito, T. and Shiga, T. (1932) Scorodite from Kiura mine Japan. Mineralogical Magazine |  | Paktunc, Dogan, Majzlan, Juraj, Huang, Artis, Thibault, Yves, Johnson, Michel B., White, Mary Anne (2015) Synthesis, characterization, and thermodynamics of arsenates forming in the Ca-Fe(III)-As(V)-NO3system: Implications for the stability of Ca-Fe arsenates. American Mineralogist, 100 (8) 1803-1820 doi:10.2138/am-2015-5199 | Journal (article/letter/editorial) | | observations in natural settings and mine tailings where scorodite is progressively replaced by yukonite and arseniosiderite...arsenian pyrite, or arsenate minerals such as scorodite (Paktunc et al. 2003, 2004). Ca-Fe arsenates were...et al. 2006) and mineralized karstic cave, Cosenza, Italy (Garavelli et al. 2009). Arseniosiderite belongs...3OH)3.8·3.8H2O, yukonite from the Grotta Della Monaca cave in Italy (Garavelli et al. 2009) appears to...containing 1 M of Ca, Fe, and As are scorodite at pH 4, scorodite and arseniosiderite at pH 5, and arseniosiderite |  | | Journal (article/letter/editorial) | | deposits in more than 60 gold districts across the province. Fourteen samples of near-surface tailings and...dominated by a single As mineral, fine-grained scorodite (FeAsO4•2H2O) in one case, and massive unweathered...in the other. In the tailings (0.7 to 7% As), scorodite and amorphous hydrous ferric arsenate (HFA) are...bioaccessibility, arsenopyrite, secondary minerals, scorodite, amorphous iron arsenate, yukonite, pharmacosiderite...plus de 60 districts aurifères répandus dans la province. Nous avons pris quatorze échantillons de ces |
|
