 | | Journal (article/letter/editorial) | | high-pressure ophiolite metasediments of Praborna ore deposit (Aosta Valley, Western Alps) SIMONE TUMIATI1,*...Studi di Milano, via Botticelli 23, 20133 Milano, Italy *Corresponding author, e-mail: simone.tumiati@unimi...degli Studi di Padova, via Giotto 1, 35137 Padova, Italy 3 Equipe Géobiosphère actuelle et primitive; Institut...deposit of Praborna crops out in the Zermatt-Saas unit of the Western Alps, in the St. Marcel valley. It represents...to the bulk-rock chemistry. Compared to shales, Praborna is enriched in Mn (up to 38.7 wt% Mn2O3) and in |  | Tumiati, Simone, Merlini, Marco, Godard, Gaston, Hanfland, Michael, Fumagalli, Patrizia (2020) Orthovanadate wakefieldite-(Ce) in symplectites replacing vanadium-bearing omphacite in the ultra-oxidized manganese deposit of Praborna (Aosta Valley, Western Italian Alps). American Mineralogist, 105 (8). 1242-1253 doi:10.2138/am-2020-7219 | Journal (article/letter/editorial) | | the ultra-oxidized manganese deposit of Praborna (Aosta Valley, Western Italian Alps) Simone Tumiati1...Studi di Milano, via Mangiagalli 34, 20133 Milano, Italy 2 Université de Paris, Institut de Physique du Globe...005)O4⸱nH2O has been found in metacherts from Praborna (Italian Alps) as micrometer-sized euhedral crystals...wakefieldite-(La) from the manganese and iron Glücksstern Mine associated with hausmannite Mn2+Mn3+ 2 O4 (Thuringia...suggested as representative of the protolith of the Praborna eclogite-facies metacherts (Tumiati et al. 2010) |  | | Journal (article/letter/editorial) | | the manganese concentrations St. Marcel-Praborna, Aosta Valley, Italy: petrology and crystal-chemistry...0.2 Sb 5§ per O = 2) from St. Marcel-Praborna in the Aosta Valley, Italy, were re-examined. These compositions...rom6ite, crystal-chemistry, petrology, St. Marcel-Praborna, Italy. Introduction Tins article examines in...manganese concentrations at St. Marcel-Praborna, Val d'Aosta, Italy. A substantial bibliography concerning...late stages of retrograde metamorphism at St. Marcel-Praborna, seems to be rather unusual. The presence of |  | | Journal (article/letter/editorial) | | Studi di Milano, Via Mangiagalli 34, 20133 Milano, Italy Dipartimento di Geoscienze, Università degli Studi...Studi di Padova, Via G. Gradenigo 6, 35131 Padova, Italy; silvana.martin@unipd.it Dipartimento di Scienze...di Torino, Via Valperga Caluso 35, 10125 Torino, Italy; andrea.festa@unito.it (A.F.); gianni.balestro@unito...particularly on the metaophiolites exposed in the Aosta Valley and in the Monviso Complex because, due to their...the Alps. In the northwestern Alps, as in the Aosta Valley for example, the high-pressure metamorphic peaks |  | Hughes, Lewis, Burgess, Ray, Chavrit, Déborah, Pawley, Alison, Tartèse, Romain, Droop, Giles, Ballentine, Chris J., Lyon, Ian (2018) Halogen behaviour in subduction zones: Eclogite facies rocks from the Western and Central Alps. Geochimica et Cosmochimica Acta, 243. 1-23 doi:10.1016/j.gca.2018.09.024 | Journal (article/letter/editorial) | | ocean floor origin for the complex. The St. Marcel valley (Fig. 1, locality 3) includes both oceanic and...al., 1981). Relics of clinohumite and olivine + ilmenite intergrowths (Evans et al., 1979) provide evidence...as the Gagnone peridotites. However, olivine + ilmenite intergrowths within the Alpe Arami and Monte Duria...and zoisite along with accessory chlorite and ilmenite. DC94B is coarse-grained and is mostly composed...collected from Servette and Fontillon, near St. Marcel. They are representative of a suite of eclogitised |  | | Journal (article/letter/editorial) | | that was investigated is found at the Byrud emerald mine, in Eidsvoll, Akershus, southern Norway. The mineralization... feldspar, tridymite, titanite, fluorapatite, ilmenite, and pseudobrookite. The mineral is named in based...pegmatite in the upper reaches of the Petreliusa River valley, Khibiny alkaline massif, Kola Peninsula Russia... was discovered in the Praborna Mn deposit, Saint-Marcel, Val d’Aosta, Italy, which belongs to the eclogitic...friedelite, and humite-group minerals. The Praborna mine is the type locality for roméite, piemonite |  | | Journal (article/letter/editorial) | | hollandite, was recently reported from the Praborna Mn deposit, Italy (Meisser et al. 1999). This occurrence...second report following the type crystal from Woods mine, Australia (Kawachi et al. 1996). Aggregates of...chlorite, muscovite, albite, quartz, rutile, and ilmenite. Dark reddish piemontite-rich lenses (up to 80...kornite, two new Mn3+ rich silicates from the Wessels Mine, Kalahari, South Africa. Schweizerische Mineralogische...the epidote group, from Val Graveglia, Liguria, Italy. European Journal of Mineralogy, 2, 519–523. Bonazzi |  | | Journal (article/letter/editorial) | | ECLOGITES FROM VERRES, VAL D'AOSTA, WESTERN ALPS, ITALY C. B A L D E L L I 1, G.V. D A L P I A Z 1 and B...Istituto di Geologia, UniversiM di Padova, Padova (Italy) ~ Centro di Studio sui Problemi dell'Orogeno delle... (Consiglio Nazionale delle Ricerche), Torino (Italy) (Accepted for publication October 23, 1984) Abstract...eclogites from Verres, Val d'Aosta, Western Alps, Italy. In: D.C. Smith, G. Franz and D. Gebauer (Guest-Editors)...and Fe-rich layers of the Verres metagabbro in Italy, a large gabbro body belonging to the Piedmont ophiolite |  | Biagioni, Cristian, Capalbo, Carmen, Lezzerini, Marco, Pasero, Marco (2014) Ferrihollandite, BaMn4+6Fe3+2O16, from Apuan Alps, Tuscany, Italy: description and crystal structure. European Journal of Mineralogy, 26 (1) 171-178 doi:10.1127/0935-1221/2013/0025-2353 | Journal (article/letter/editorial) | | Ferrihollandite, BaMn4þ6Fe3þ2O16, from Apuan Alps, Tuscany, Italy: description and crystal structure CRISTIAN BIAGIONI*...Università di Pisa, Via S. Maria 53, 56126 Pisa, Italy *Corresponding author, e-mail: biagioni@dst.unipi...hydrothermal ores from Vagli, Apuan Alps, Tuscany, Italy, on the basis of chemical and X-ray diffraction...oxides, crystal structure, Apuan Alps, Tuscany, Italy. describe a phase having Ba2þ as dominant tunnel...al., 1996) and mannardite from the Monte Arsiccio mine (Biagioni et al., 2009a). Fig. 1. Ferrihollandite |  | | Journal (article/letter/editorial) | | Studi di Milano, Via Mangiagalli 34, 20133 Milano, Italy (davide.zanoni@unimi.it) 2 Dipartimento di Scienze...degli Studi di Pavia, Via Ferrata 1, 27100 Pavia, Italy 1 Short title: OCEAN FLOOR TO SUBDUCTION RECORD...oceanic Zermatt-Saas Zone (Western Alps, northwestern Italy) during Alpine subduction. Rodingites occur in the...Mg-chloriteII + garnetII clinopyroxeneII ± vesuvianiteII ± ilmenite in the garnet-chlorite-clinopyroxenebearing rodingite;...upper Valtournanche (Val d’Aosta, northwestern Italy), consists of high-pressure/ultra-highpressure (HP/UHP) |  | | Catalog/List | | pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 £2.50 1x1 £4...guite rich black masses in matrix (Union Carbide Mine, Wilson Springs Garland County, Arkansas USA) 1x1...fairly sparse, green crusts on matrix. (San Miguel Mine Moctezuma Mexico) 1cm piece £ 5 5mm £3 WITH UNUSUAL...CO/3 0 Quite rich yellow crusts on matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) Ixliins...MINERAL !I dark red micro's on matrix. (Getchell Mine,Humboldt Co . Nevada USA) 5mm £4 up to 1.5cm £7 |  | | Journal (article/letter/editorial) | | from Tre Croci, Vico Volcanic complex (Latium, Italy) G. DELLA VENTURA, F. BELLATRECCIA Dipartimento...Vico Volcanic complex at Tre Croci, near Viterbo, Italy. The host rock is composed of abundant K-feldspar...variety of geological environments. In Latium (Italy), it occurs in syenitic holocrystalline ejecta (Della...sodalite. The accessory phases include magnetite, ilmenite, fluorapatite, titanite, vonsenite and fluorite...evidence from Ponza Island, Pontine Archipelago, Italy. Eur. J. MineraL, 8, 1401-20. C'em~, P. and Riva |  | | Journal (article/letter/editorial) | | International Eclogite Conference held in Courmayeur, Italy, September 2nd– 10th, 2013 (www.iec2013.unito.it...Oriented inclusions in garnet include rutile, ilmenite, apatite, and http://dx.doi.org/10.1016/j.lithos...quartz/coesite, while clinopyroxene contains rutile (±ilmenite) and apatite precipitates. In addition, the authors...Mn-silicate assemblages from the manganese ore of Praborna (Aosta Valley, Italian Western Alps), which are embedded...(Chogo Lungma Glacier, Deosai Plateau and Hunza Valley). Bruno Lombardo (1944–2014) Acknowledgments We |  | | Book (volume) | | esagonali di calcite. Monte Rosso di Verra, presso Saint Jacques, Champoluc, Val d'Aosta. In basso, a destra:...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...4 - Violano, in masse tipicamente violacee. St. Marcel, Val d'Aosta (1 x). 264 Traversel l ite Un'altra...sim metria triclina, fu trovato a Saint Marcel i n Val d' Aosta, insieme a molto materiale compatto |  | | Journal (article/letter/editorial) | | transport through two mixing zones affected by acid mine drainage near Silverton, Colorado— Laurence E. Schemel...Rare sulfosalts from Vulcano, Aeolian Islands, Italy. III. Wittite and cannizzarite—Yu S. Borodaev, A...manganiferous deposits from St. Marcel– Praborna, Val d’Aosta, Italy—E.-A. Perseil, P. Blanc, and D....101 Complexly zoned fibrous tourmaline, Cruzeiro mine, Minas Gerais, Brazil: A record of evolving magmatic...47, No. 2, April 2000 Titaniferous magnetite-ilmenite thermometry and titaniferous magnetiteilmenit |  | | Journal (article/letter/editorial) | | Sezione di Pavia, via Ferrata 1, 27100 Pavia, Italy b Dipartimento di Scienze della Terra, Università...Università di Pavia, via Ferrata 1, 27100 Pavia, Italy Abstract Titanite/liquid partition coefficients for...conditions favour the formation of titano-magnetite and ilmenite, which are the common Ti-phases in most igneous...in the manganese concentrations at St. Marcel-Prabona (Italy). The aim of this paper is to provide partition...amphibole, titanite, subordinate clinopyroxene, rare ilmenite and glass. The degree of crystallisation is lower |  | | Catalog/List | | lx2 £2 lxl£3 2x2£12 lx2£5 lxl £1 ----· Hawkswood Mine, Cornwall ANDALUSITE Cabracao, Minl10, Portugal...Andalucia Spain. Type Location New East Whcal Russell mine, Devon ,England 140 grey bleby small botryoidal..._lx2_ _80 _ _____ _,o 1129 ALMANDINE Braslad iron Mine near Arendal ,Norway Unknown location I 1 63 □a...lxl£2 2x3£6 3x4£8 feldspar ALSTONITE Fallowfield Mine, Northumberland ANDRADITE Grua. Oppland Norway 5...2x3£15 Gamet ½" £3 ALTHAUSITE ANDRADITE Benallt Mine,Lleyn ,Wales Modum, Buskerud,Norway 975 44 Brown-purple |  | Černý, Petr, Chapman, Ron, Simmons, William B., Chackowsky, Leonard E. (1999) Niobian rutile from the McGuire granitic pegmatite, Park County, Colorado; solid solution, exsolution, and oxidation. American Mineralogist, 84 (5) 754-763 doi:10.2138/am-1999-5-607 | Journal (article/letter/editorial) | | associated with potassium feldspar, quartz, biotite, ilmenite, and monazite-(Ce). Primary homogeneous niobian...niobian rutile, titanian ferrocolumbite, and minor ilmenite. These three phases did not attain chemical equilibrium...hematite + titanian-tungstenian ixiolite; primary ilmenite was oxidized into an anatase + hematite intergrowth...associated with microcline-perthite, quartz, biotite, ilmenite, and monazite-(Ce). The microcline-perthite is...iron should not exceed 10%. The sole exception is ilmenite, particularly the DIL type depleted in A cations |  | | Journal (article/letter/editorial) | | phase and sometimes show intergrowth texture with ilmenite. Most rutile grains contain up to 3.7 wt.% Nb2O5...Nb5+M3+Ti4þ 2 . Fine-grained rutile grains included in ilmenite are distinctly poor in Nb (<0.1 wt.% as Nb2O5)...sillimanite, quartz, and minor amounts of rutile, ilmenite, zircon and graphite. Among the six paragneiss... sillimanite; Ms, muscovite; Rt, rutile; Ilm, ilmenite; Gr, graphite; Ap, apatite; Mnz, monazite; Zrn...minerals are: Bt, biotite; Chl, chlorite; Ilm, ilmenite; Kfs, K-feldspar; Mnz, monazite; Pl, plagioclase; |  | Agangi, Andrea, Reddy, Steven M., Plavsa, Diana, Fougerouse, Denis, Clark, Chris, Roberts, Malcolm, Johnson, Tim E. (2019) Antimony in rutile as a pathfinder for orogenic gold deposits. Ore Geology Reviews, 106. 1-11 doi:10.1016/j.oregeorev.2019.01.018 | Journal (article/letter/editorial) | | product of Ti-bearing oxides and silicates, such as ilmenite, titanite or biotite (Luvizotto and Zack, 2009;...ranodiorite (TTG) intrusions, such as the Kaap Valley Tonalite (Kamo and Davis, 1994). All major greenschist-facies...the paragenetic sequence from destabilisation of ilmenite and magnetite (Schwartz et al., 1992). Hydrothermal...Analysis at the University of Western Australia. Ilmenite and magnetite coexisting with rutile were also...replacement of other Ti-bearing minerals, such as ilmenite, Ti-magnetite, biotite and titanite (Force, 1980; |  | | Catalog/List | | mass. small pale blue crystals on matrix. Benallt Mine,Lleyn ,Wales lxl £5 lx2 £8 Parclho, Pariba,Brazil)...Parnmirim Region, Agua Quen1a,Bal1ia, Brazil Benallt Mine, Llcyn Wales A)£3 B) £5 3mm £4 5mm £6 lxl £6...micros gemmy yellow-green crystal section. Bcckermet Mine. Cumbria lxl £2 131 40 BARYfES 211 BRAZILIANITE...Goldstrike Pit, Elko,Nevada. U.S.A Divino des Laranjeiras Mine, Minas Gerias,Brazil Magnet Cove,Arkansas,USA ½...Comwall Wagholi Quarry,Poona,India lxl £3 Funauchi Mine, Aikta Prefecture.Japan Venice Dome, Lousiana, U |  | | Catalog/List | | massive with minor Celsian and Bementite from Benallt Mine, Lleyn, Wales, (Recently tested by XRD) lxl £4 lx2...£15 £6 88 ADAMITE Ojuela Mine, Mapimi, Mexico 1036 ALSTONITE Fallowfield Mine, Northumberland Colourless...x2 £ 1.50 2x2 £3 Al SO/4 767 ■ AJOITE Christmas Mine, Gila County, Arizona USA 14 ALUMINITE Railway cutting...~-------·-·-- ·· -·· 1077 ■■ ALLOPHANE Hawkswood Mine, Cornwall 933 ANATASE Hingston Quarry,Cornwall Black...Kola Russia 501 ALLOPHANE New East Wheal Russell mine, Devon ,England grey bleby small botryoidal with |  | | Catalog/List | | ___ 2x2£3 ___ - -----~ - ~014_ _ 88 ADAMITE Ojuela Mine, Mapimi, Mexico 69 ALUMOHYDROCALCITE South Bay,...- - --··---- - - - - - · . 767 AJOITE Christmas Mine, Gila County, Arizona USA 17 ANAL CITE Talisker...North Sweden 501 ALLOPHANE New East Whcal Russell mine, Devon ,England variety VIRIDINE (Mangan rich variety)...217 ANDORITE San Jose Mine, Oruro, Bolivia 1129 ■ ALMANDINE Brnstad iron Mine near Arendnl ,Norway Pure...Bcnallt Minc,Llcyn. Wales 1036 ALSTONITE Fnllowlielcl Mine, Northumberland White masses in malrix wilh micro |  | | Journal (article/letter/editorial) | | clinopyroxene, garnet, zoisite, rutile and oxydes (ilmenite, magnetite). No preferred mineral orientations...1995. Geology of the Internal Zone of the Grand Saint Bernard Nappe: a metamorphic Late Paleozoic volcano-sedimentary...volcano-sedimentary sequence in South-Western Aosta Valley (Western Alps). In: Lombardo, B. (Ed.), Studies..., 1987. The HP–LT manganiferous quartzites of Praborna, Piemont ophiolite nappe, Italian Western Alps...ophiolitic glaucophanites of the lower St Marcel valley (Aosta, Italy). Ofioliti 14 (3), 135–156. Massonne |  | | Catalog/List | | matrix hl !3 5 AGARDITE (Ce) r ...fe green micro's Mine, Wolf;_n, West Germany) 'h ins f.3. 60 6 ALBITE...fi1icaeousscales on matrix a (St M~rcel, Val d'Aosta Italy) W 1J:1 7Cp 1x2 f 1. 30 2x2 :t3. 00 brc~n ~~ss...yellow pea size masses &crusts on Quartz (les Anglais Mine, Massiac,Brouse France) lxl 60p 1x2 fl.10 56 BIOTITE...61 BORNITE rich purple mass in matrix.(Gortdrum Mine, Tipperary S.Ireland) location closed. lxl 50p 1x2...BOULANGERITE grey masses in and on matrix.(Melba Mine, N.E.Dundas Tasmania) lxl !1.90 1x2 !4.00 64 BOULANGERITE |
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