 | | 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 GeĢobiospheĢre 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 UniversitĆ© de Paris, Institut de Physique du Globe...005)O4āø±nH2O has been found in metacherts from Praborna (Italian Alps) as micrometer-sized euhedral crystals...mineral. It is tetragonal and isostructural with zircon, with a = 7.2233(12) Ć
, c = 6.3949(18) Ć
, V = 333...xenotime group with the ideal formula REEV5+O4 and zircon-type structure, is rare but known to occur preferentially |  | | Journal (article/letter/editorial) | | manganese concentrations at St. Marcel-Praborna, Aosta Valley, Italy: petrography and crystal chemistry...D.C., 429 Arsenopalladinite, from the Cau~ iron mine, Itabira District, Minas Gerais, Brazil, 455 ARSLAN...497; high in Ti from ignimbrites from the Zilan Valley, Eastern Turkey, 750 BIRCH, W.D., 143, 305 Birimian...570 BRAZIL, palladium minerals from the Cau8 iron mine, Itabira District, Minas Gerais, 455 BRIGATrl, M...273 CLARKE, D.B., 311 Clintonite, in skarns from Italy, 149 COENRAADS,R.R., 465 Colour, changes and crystallographic |  | | Journal (article/letter/editorial) | | at the Praborna mine near Saint-Marcel, Val dāAoste, Italy, and in the upper Maurienne Valley, France...albite, biotite, epidote, hematite, titanite and zircon). 9: Ultrahigh-temperature granulite facies, Eastern...calcite, bustamite, magnetite. 10. Eclogite facies, Praborna, W. Alps (Martin and Kienast, 1987); with hematite...Maurienne Valley, France (Chopin, 1978), on the western tip of the Gran Paradiso massif. The Saint-Marcel...Saint-Marcel locality is the famous Praborna mine, in Val dāAosta, Italy, on the north-eastern flank of the Gran |  | | Journal (article/letter/editorial) | | MANGANIFEROUS DEPOSITS FROM ST. MARCEL ā PRABORNA, VAL DāAOSTA, ITALY ELENA-ADRIANA PERSEIL Laboratoire...manganiferous deposit at the St. Marcel ā Praborna mine in the Val dāAosta, Italy. Three types of fluorapatite...electron-microprobe analysis, arsenic, quencher, St. Marcel ā Praborna, Italy. SOMMAIRE Nous dĆ©crivons dāimportantes...concentrations manganĆ©sifĆØres de la mine de St. Marcel ā Praborna dans le Val dāAoste, Italie. Trois types...effet dāinhibition de la luminescence, St. Marcel ā Praborna, Italie. INTRODUCTION Arsenic-bearing apatite |  | Altherr, Rainer, Soder, Christian, Panienka, Sandra, Peters, Daniel, Meyer, Hans-Peter (2013) Pink manganian phengite in a high P/T meta-conglomerate from northern Syros (Cyclades, Greece) Contributions to Mineralogy and Petrology, 166 (5) 1323-1334 doi:10.1007/s00410-013-0929-7 | Journal (article/letter/editorial) | | is from the Praborna mine near St. Marcel, 123 Contrib Mineral Petrol Val dāAoste, Italy (e.g., Penfield...Corsaglia near Ponte dei Gorrazzi in Piedmont, Italy (Cabella et al. 1992). Here, we describe a new occurrence...determined to *52 Ma B.P. by UāPb SHRIMP dating on zircon (Tomaschek et al. 2003) and by high-precision LuāHf...quartz (*2 vol%), barite (\1 vol%) and accessory zircon. No piemontite was found, although 8 thin sections...Tinos (Cyclades, Greece): implications for UāPb zircon geochronology. Chem Geol 175:581ā603 BroĢcker M |  | | Journal (article/letter/editorial) | | Studi di Milano, Via Mangiagalli 34, 20133 Milano, Italy Dipartimento di Geoscienze, UniversitĆ 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 |  | | Catalog/List | | grey mass with Actinolite, large 2x3 inch ..Bastnas Mine Sweden Ā£30 12. SCAPOLITE completely clear single...small quartz crystals, possibly some with faces. lxl Mine, Washoe County Nevada USA Ā£30 Olinghouse ......on lxl inch matrix Arizona USA Ā£18 Ā· Inspiration mine, Gila County, 21. HAMBERGITE chalky-white crystalline...tabular twinned crystal about 1cm size ( Telino Mine, Linopolis, Minas Gerais Brazil) Ā£25 . 1'fa Be PO4...TITANITE variety "Greenovite" (Praborna Mine, St Marcel, Aosta Italy) pink vein about 3mm wide and 3cm |  | | Catalog/List | | with micro Sphalerite on 2x2 matrix Lers Malines Mine, Gard, France Ā£20 4. BENTORITE a very rare, Cr containing...mineral as a single crystal like this Ā£30 . Koksha Valley, Badakshan, Afganistan 7. SCOLECITE single terminated...crystals, possible Dickite micros too. Panteg-y-Gaseg Mine, Amlwch Anglesey, Wales Ā£18 I 0. PENNANTITE small...matrix. Plates are about I to 1.5 mm size (Benallt Mine,Lleyn, Wales) Ā£30 11. BOURNONITE good blocky grey...crystals,. all over 2.5 x2.5 inch surface Likasi Mine, Katanga Congo Ā£25 14. SIDERITE rich red-brown |  | 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, BaMn4Ć¾6Fe3Ć¾2O16, from Apuan Alps, Tuscany, Italy: description and crystal structure CRISTIAN BIAGIONI*...UniversitaĢ 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 Ba2Ć¾ as dominant tunnel...al., 1996) and mannardite from the Monte Arsiccio mine (Biagioni et al., 2009a). Fig. 1. Ferrihollandite |  | Hughes, Lewis, Burgess, Ray, Chavrit, DĆ©borah, Pawley, Alison, TartĆØse, 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...collected from Servette and Fontillon, near St. Marcel. They are representative of a suite of eclogitised...collected from the Lago di Cignana and the Praborna manganese mine areas. DC50B is a garnet mica schist, in...Lustres Formation in the Alps (Saint-Veran, France and Traversiera Massif, Italy). In: Baumgartner P.O., OāDogerthy...and Trommsdorff V. (2006) Sub-solidus Oligocene zircon formation in garnet peridotite during fast decompression |  | | Journal (article/letter/editorial) | | found at Hashupa and at Alchuri, in the Shigar Valley, Northern Areas, Pakistan (Blauwet 2006). ā¢āGood...striated epidotes in matrix, from the Calumet iron mine, Colorado. Epidote was described in 1801 by HaĆ¼y...collectors. Within the United States, the Green Monster mine, Prince of Wales Island, Alaska, has yielded superb...quartz (Leavens and Thomssen 1977); the Calumet iron mine, Chaffee County, Colorado, is a notable locale for...quartz and yellow-green titanite, from the Capelinha mine, Minas Gerais, Brazil, are relatively inexpensive |  | | Journal (article/letter/editorial) | | chemistry of romeĢite from the type locality Praborna (Italy), from Massiac (France), and from four newly...discovered by Damour (1841) in the Praborna mine (Piemont, Italy) and named in honor of French mineralogist...mineralogist RomeĢ de lāIsle (1736ā1790). Although the Praborna romeĢite was originally described as CaSb32Ā O4...description: (1) Sample MGL37726 from Praborna, Piemont, Italy. (2) Grain FI10/c, Fianel, Val Ferrera...Na2O CaO MnO UO2 PbO F OH )(OH,F) 2 Fianel 15 1 Praborna 7 Analysis NĀ° Deposit Pointsb Table 2 Selected |  | Chukanov, Nikita V., Aksenov, Sergey M., JanÄev, Simeon, Pekov, Igor V., Gƶttlicher, Jƶrg, Polekhovsky, Yury S., Rusakov, Vyacheslav S., Nelyubina, Yuliya V., Van, Konstantin V. (2016) A new mineral species ferricoronadite, Pb[Mn4+6(Fe3+,Mn3+)2]O16: mineralogical characterization, crystal chemistry and physical properties. Physics and Chemistry of Minerals, 43 (7) 503-514 doi:10.1007/s00269-016-0811-z | Journal (article/letter/editorial) | | talc, Zn-bearing muscovite, baryte, quartz and zircon. Ferricoronadite is a late hydrothermal mineral...The new mineral was collected in the Babuna River valley, in talus at the bottom of the Kalugeri Hill. It...xenoliths of a baryte rock and accessory zincochromite, zircon, fluorapatite, Zn-bearing talc and romĆ©ite-group...00(Mn7.58Al0.15V0.14Fe0.07 Mg0.06)O16 from the Imiter mine, Morocco, and (c) cryptomelane (K0.6Na0.15Ba0.05)(Mn7...mode. Raw data were integrated using the program SAINT and scaled, merged and corrected for Lorentz-polarization |  | | Journal (article/letter/editorial) | | Oberhalbstein, Switzerland (Geiger 1948), at Praborna in the Aosta Valley, Italy (Martin-Vernizzi 1984, Perseil 1991)...1991), and in the Ligurian Alps, Italy (Cortesogno et al. 1979), in other chert-hosted deposits in the...1993), in sandstone-hosted deposits at the Kombat mine, Namibia (Dunn 1991); and in carbonate-hosted deposits...metamorphism. REGIONAL GEOLOGY Val Ferrera, a high valley with the source of a tributary to the Rhine in...Fianel 3: Starlera 4: Bergwiesen SP Val Ferrera Italy Thusis 3 2 1 SB 4? SP ? ? S A 20 km ? |  | | Journal (article/letter/editorial) | | 880 , from San Vito quarry, Mt. Somma, Naples, Italy, is characterised by extensive substitutions in...sampled in a quarry near San Vito, Mt. Somma, Naples (Italy). Sample description and occurrence The Nb-containing...ejectum at a San Vito quarry, Mt. Somma, Naples (Italy). The host rock was collected from a pyroclastic... Nb-containing titanite 119 clude pyrochlore, fluorite, zircon, apatite, britholite ā (Ce), titanite, hiortdahlite...was financially supported by MURST and by CNR of Italy. References Angel, R. J. (1997): Transformation |  | | Catalog/List | | pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 Ā£2.50 1x1 Ā£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 Ā£ 5 5mm Ā£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 Ā£4 up to 1.5cm Ā£7 |  | | Journal (article/letter/editorial) | | International Eclogite Conference held in Courmayeur, Italy, September 2ndā 10th, 2013 (www.iec2013.unito.it...phase modeling, Zr-in-rutile geothermometry, and zircon geochronology, the authors recognize two distinct...Mn-silicate assemblages from the manganese ore of Praborna (Aosta Valley, Italian Western Alps), which are embedded...of this nappe, and provide UāPb SIMS metamorphic zircon data that constrain the time of eclogitization...(Chogo Lungma Glacier, Deosai Plateau and Hunza Valley). Bruno Lombardo (1944ā2014) Acknowledgments We |  | | Catalog/List | | lx2 Ā£2 lxlĀ£3 2x2Ā£12 lx2Ā£5 lxl Ā£1 ----Ā· 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 ā”a...lxlĀ£2 2x3Ā£6 3x4Ā£8 feldspar ALSTONITE Fallowfield Mine, Northumberland ANDRADITE Grua. Oppland Norway 5...2x3Ā£15 Gamet Ā½" Ā£3 ALTHAUSITE ANDRADITE Benallt Mine,Lleyn ,Wales Modum, Buskerud,Norway 975 44 Brown-purple |  | | 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 |  | | Journal (article/letter/editorial) | | PiemonteāLigurian units south of Aosta Valley: New evidence from Urtier Valley (Western Alps) Alessandro Ellero1...Ellero1 1 CNRāIGG, Pisa, Italy 2 San Giuliano Terme, Italy | Andrea Loprieno2 Correspondence Alessandro...Ellero, CNRāIGG, Via G. Moruzzi, 1, 56124 Pisa, Italy. Email: a.ellero@igg.cnr.it Handling Editor: C....investigations performed in the Urtier Valley, located south of Aosta Valley at the northern flank of the Gran...the nappe stack exposed south and north of the Aosta Valley are reported. In fact, contrary to what is observed |  | | Catalog/List | | crystals on dar~ matrix. (not radioactive) (Leonie Mine, huerbach, Oberpfal Genany) Sto 10mmf3 l/2in;; ES...Silicate pinkish massiv~ with black Allanite (Bastnas Mine, Riddarhytt2n Vastm~~l2nd,Sw2deri) Cu/2 Se 039...(LookoutPass. Tooele County, Ut2h) lxl f7 Ā½ ins f4 478 ZIRCON Zr Si0/4 singl2 pale f2Ā½n cryst&l s~o~i~g douJle...(Ti Nb 0 rich black nasses in matrix (Karnasurt Mine, Revda, Kola Peninsula, Russia) lxl E2.50 lx2 ins...PO/~ ā¢ yellowish plates on mauvEUssingit~ (UmDa Mine, Reuda, Kola Peninsula ā¢ Russia) (6a pure plate |  | | Journal (article/letter/editorial) | | exhumation stages documented by fission-track ages on zircon and apatite have been dated at 30 Ma and 20 Ma...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...based on SHRIMP-dating of magmatic and metamorphic zircon domains. Example: Alpe Arami (Central Swiss Alps)..., 1987. The HPāLT manganiferous quartzites of Praborna, Piemont ophiolite nappe, Italian Western Alps |  | | Journal (article/letter/editorial) | | diagnostic minerals are no longer stable. In contrast to zircon, rutile provides information about the last metamorphic...in rutiles. Since Zr in rutile, coexisting with zircon and quartz, is extremely temperature dependent...as a geothermometer. Metapelites always contain zircon and quartz, thus the Nb and Cr signatures of metapelites...improvements in microanalytical techniques. Detrital zircon has received the most attention, because it figures...geochemical characteristics. Rutile is, together with zircon and tourmaline, among the most stable heavy minerals |  | | Catalog/List | | massive with minor Celsian and Bementite from Benallt Mine, Lleyn, Wales, (Recently tested by XRD) lxl Ā£4 lx2...Ā£15 Ā£6 88 ADAMITE Ojuela Mine, Mapimi, Mexico 1036 ALSTONITE Fallowfield Mine, Northumberland Colourless...x2 Ā£ 1.50 2x2 Ā£3 Al SO/4 767 ā AJOITE Christmas Mine, Gila County, Arizona USA 14 ALUMINITE Railway cutting...~-------Ā·-Ā·-- Ā·Ā· -Ā·Ā· 1077 ā ā 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 |
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