 | | 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 GeÌobiospheÌre 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 |  | | Journal (article/letter/editorial) | | at the Praborna mine near Saint-Marcel, Val dâAoste, Italy, and in the upper Maurienne Valley, France...hausmannite, apatite, Mn-rich calcite, bustamite, magnetite. 10. Eclogite facies, Praborna, W. Alps (Martin and...2005); with rhodonite, hematite or magnetite, calcite, MnâZn-spinel, quartz. 12. Amphibolite facies,...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 dâAosta, Italy, on the north-eastern flank of the Gran |  | | Journal (article/letter/editorial) | | les oxydes mangan6sif6res du gisement de St. Marcel-Praborna-V. Aoste, Italie E.A. Perseil Laboratoire...piemontite-bearing horizons of the St. Marcel Mine, Praborna (Aosta Valley, Italy). These oxides are always associated...des niveaux fi pi6montite du gisement de St. Marcel-Praborna (Val d'Aoste, Italie). Ces oxydes sont toujours...faci6s de pi6montite, dans le gisement de St. Marcel-Praborna en Italic (Perseil 1987) a 6t6 l'occasion d'une...facies 6clogite (Fig. 1). Le gisement de St. Marcel-Praborna est parcouru d'un abondant r6seau de veines |  | 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 UniversitĂ© de Paris, Institut de Physique du Globe...005)O4âž±nH2O has been found in metacherts from Praborna (Italian Alps) as micrometer-sized euhedral crystals...wakefieldite-(La) from the manganese and iron GlĂŒcksstern 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) | | manganese concentrations at St. Marcel-Praborna, Aosta Valley, Italy: petrography and crystal-chemistry...manganese concentrations at St. Marcel-Praborna in the Aosta Valley, Italy. These titanites arc chemically...titanite, crystal-chemistry, petrography, St. Marcel-Praborna, Italy. Introduction THE manganese concentrations...MnO) collected by de Lom (1843) from the St. Marcel-Praborna locality. Fermor (1908) also mentioned 'greenovite'...electron microprobe on greenovites from St. Marcel-Praborna, Mottana and Griffin (1979) recorded Mn contents |  | Diella, Valeria, Bocchio, Rosangela, Caucia, Franca, Marinoni, Nicoletta, Langone, Antonio, Possenti, Elena (2021) New Insights for Gem-Quality Mn-Bearing Diopside-Omphacite, Violane Variety, from Saint Marcel (Val DâAosta, Italy): Its Trace Elements and Spectroscopic Characterization. Minerals, 11 (2) 171 doi:10.3390/min11020171 | Journal (article/letter/editorial) | | Diopside-Omphacite, Violane Variety, from Saint Marcel (Val DâAosta, Italy): Its Trace Elements and Spectroscopic...Diopside-Omphacite, Violane Variety, from Saint Marcel (Val DâAosta, Italy): Its Trace Elements and Spectroscopic...Milan, Italy Department of Earth Sciences âArdito Desioâ, University of Milan, 20133 Milan, Italy; rosangela...Environmental Sciences, University of Pavia, 27100 Pavia, Italy; caucia@crystal.unipv.it National Research Council...Resources (IGG), Section of Pavia, 27100 Pavia, Italy; langone@igg.cnr.it National Research Council, Institute |  | | Journal (article/letter/editorial) | | MANGANIFEROUS DEPOSITS FROM ST. MARCEL â PRABORNA, VAL DâAOSTA, ITALY ELENA-ADRIANA PERSEIL Laboratoire...manganiferous deposit at the St. Marcel â Praborna mine in the Val dâAosta, Italy. Three types of fluorapatite...electron-microprobe analysis, arsenic, quencher, St. Marcel â Praborna, Italy. SOMMAIRE Nous dĂ©crivons dâimportantes...concentrations manganĂ©sifĂšres de la mine de St. Marcel â Praborna dans le Val dâAoste, Italie. Trois types...effet dâinhibition de la luminescence, St. Marcel â Praborna, Italie. INTRODUCTION Arsenic-bearing apatite |  | | Journal (article/letter/editorial) | | Universit)t di Bologna, Italy, C.N.R. Centro per la Cristallografia strutturale, Pavia, Italy, Naturhistorisches...from the manganese deposit of Praborna, near St. Marcel (Aosta Valley, Italy) occur in two different varieties:...("Violan") von der Manganlagerstiitte Praborna bei St. Marcel (Aosta-Tal, Italien) bilden entweder idiomorphe...in the Mn-orebody Praborna near St. Marcel in the Aosta Valley (northwestern Italy). It was originally...(1889) on a rose pyroxene occurring in the Swedish Mn-mine, Jakobsberg. Although believed initially to be a |  | Caucia, Franca, Scacchetti, Maurizio, Marinoni, Luigi, Gilio, Mattia, Langone, Antonio, Bartoli, Omar, Vanotti, Marco, Foianini, Ivano (2021) An Attractive Blue Diopside from Sissone Valley, Western Alps, Italy. Minerals, 11 (8) 837 doi:10.3390/min11080837 | Journal (article/letter/editorial) | | Attractive Blue Diopside from Sissone Valley, Western Alps, Italy Franca Caucia 1, *, Maurizio Scacchetti...Attractive Blue Diopside from Sissone Valley, Western Alps, Italy. Minerals 2021, 11, 837. https:// doi...University of Pavia, Via Ferrata 1, 27100 Pavia, Italy; mauscacchetti@alice.it (M.S.); luigitito.marinoni@unipv...ResourcesInstitute CNR, Via Ferrata 1, 27100 Pavia, Italy; langone@igg.cnr.it Geosciences Department, University...University of Padova, Via Gradenigo 6, 35100 Padova, Italy; omar.bartoli@unipd.it Correspondence: caucia@crystal |  | Cabella, Roberto, Basso, Riccardo, Lucchetti, Gabriella, Marescotti, Pietro, Martinelli, Alberto, Nayak, Virendra Kumar (2003) Squawcreekite-rutile solid solution from the Kajlidongri Mine (India) European Journal of Mineralogy, 15 (2) 427-433 doi:10.1127/0935-1221/2003/0015-0427 | Journal (article/letter/editorial) | | Squawcreekite-rutile solid solution from the Kajlidongri Mine (India) ROBERTO CABELLA1*, RICCARDO BASSO1, GABRIELLA...UniversitaÌ di Genova, Corso Europa 26, I-16132 Genova, Italy * Corresponding author, e-mail: cabella@dipteris...recognised in quartz veins from the Kajlidongri manganese mine District Jhabua, Madhya Pradesh (India): this finding...District (New Mexico, U.S.A), the Esperansa tin mine (Durango, Mexico), and the Olimpiada gold deposit...is Fe3+, Mn3+, Al). In rutile from St. Marcel-Praborna, Italy, Smith & Perseil (1997) recognised that |  | | Journal (article/letter/editorial) | | layers (kutnohorite, dolomite, rhodochrosite and calcite), oxide layers (jacobsite; reduced horizons with...carbonates (kutnohorite, dolomite, rhodochrosite et calcite), oxydes (jacobsite; niveaux rĂ©duits Ă manganosite...Ködnitz Valley, Eastern Alps; Abrecht (1990); GraubĂŒnden, Central Alps; Geiger (1948); Praborna and Val...grade (Gonzen, Val Graveglia) to eclogitic facies (Praborna). They developed complex assemblages of metamorphic...domain. The Turtmanntal, a tributary to the Rhone Valley in Canton Wallis, Western Switzerland, belongs |  | 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) | | Mount PrıÌonas, a meta-conglomerate consists of calcite (*63 wt%), pink manganian phengite, blueâpurple...the mineral sub-assemblage braunite ? quartz ? calcite (former aragonite) suggests high oxygen fugacities...but it is assumed that the FeâMn-rich and the calcite-rich particles originated from different sources...is from the Praborna mine near St. Marcel, 123 Contrib Mineral Petrol Val dâAoste, Italy (e.g., Penfield...Corsaglia near Ponte dei Gorrazzi in Piedmont, Italy (Cabella et al. 1992). Here, we describe a new occurrence |  | | Journal (article/letter/editorial) | | Studi di Milano, Via Mangiagalli 34, 20133 Milano, Italy Dipartimento di Geoscienze, UniversitĂ 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 | | interesting white platy flat calcite-- attractive piece 6x4. Whitesmith Mine Stontian Scotland ÂŁ25 7 ElJDIAL...all over the top surface 4x3cm Cassagna Mine, Ne Liguria Italy ÂŁ 25 14 STRONTIO-ORTHO JOAQU1N1TE one yellow...pinkish micro crystals on Boracite crystals Boulby mine Loftus Yorkshire 3x2cm ÂŁ18 16 PRICEITE hard white...crystal sections on lx2cm surface Molinello Mine, Val Graveglia Italy ÂŁ8 18 NATIVE COPPER a cleaned piece 8x5cm...Braunite, Piemontite and quartz Praboma Mine, St Marcel ,Aosta Italy 3.5 x3cm ÂŁ12 25 RHODIZlTE glass tube |  | | Catalog/List | | rich red mass with black Franklinite and minor calcite and willemite. the willemite will fluoresce green...grey mass with Actinolite, large 2x3 inch ..Bastnas Mine Sweden ÂŁ30 12. SCAPOLITE completely clear single...small quartz crystals, possibly some with faces. lxl Mine, Washoe County Nevada USA ÂŁ30 Olinghouse ......on lxl inch matrix Arizona USA ÂŁ18 · Inspiration mine, Gila County, 21. HAMBERGITE chalky-white crystalline...tabular twinned crystal about 1cm size ( Telino Mine, Linopolis, Minas Gerais Brazil) ÂŁ25 . 1'fa Be PO4 |  | | 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...PIEMONTITE-GROUP MINERALS quartz, hematite, dolomite, and calcite with subordinate amounts of muscovite, chlorite...consists of quartz, albite, piemontite, dolomite, calcite, muscovite, and hematite with titanite and apatite...subordinate amounts of piemontite-group minerals, calcite, muscovite, and quartz (Figs. 1c and 2). NoĂ©lbensonite |  | | Catalog/List | | 1077 â ALLOPHANE Hawkswood Mine, Cornwall 220 â CLINOSAFFLORITE Capitol Mine. Gowganda, Ontario.Canada...ÂŁ3 lx2ÂŁ6 CurichAdamile 766 â DIOPTASE Christmas Mine, Gila County, Arizona ,USA Green elongated micro...lxlÂŁ6 CuSi0 .. - - -- -·- 131 â DOLOMITE Carrock Mine, Caldbeck Fells, Cumbria FERROAN DOLOMITE, rich...massive lxl ÂŁ1 lx2 ÂŁ2 2x2 ÂŁ5 104 â EMMONSITE Bambolla Mine, Moctezuma, Mexico Green crusts on matrix. quite...Babbacombe Devon Small creamy bladed crystals on calcite. Location interest Ix I ÂŁ3 Ix2 ÂŁ5 2x2 ÂŁ I O 1097 |  | | Catalog/List | | with micro Sphalerite on 2x2 matrix Lers Malines Mine, Gard, France ÂŁ20 4. BENTORITE a very rare, Cr containing...mineral as a single crystal like this ÂŁ30 . Koksha Valley, Badakshan, Afganistan 7. SCOLECITE single terminated...crystals, possible Dickite micros too. Panteg-y-Gaseg Mine, Amlwch Anglesey, Wales ÂŁ18 I 0. PENNANTITE small...matrix. Plates are about I to 1.5 mm size (Benallt Mine,Lleyn, Wales) ÂŁ30 11. BOURNONITE good blocky grey...crystals,. all over 2.5 x2.5 inch surface Likasi Mine, Katanga Congo ÂŁ25 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, BaMn4ĂŸ6Fe3ĂŸ2O16, from Apuan Alps, Tuscany, Italy: description and crystal structure CRISTIAN BIAGIONI*...UniversitaÌ 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 Ba2ĂŸ as dominant tunnel...quartz ĂŸ calcite veins. Whereas braunite layers are probably syngenetic in origin, quartz ĂŸ calcite veins |  | | Journal (article/letter/editorial) | | chemistry of romeÌite 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 RomeÌ de lâIsle (1736â1790). Although the Praborna romeÌite was originally described as CaSb32 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 N° Deposit Pointsb Table 2 Selected |  | | Journal (article/letter/editorial) | | found at Hashupa and at Alchuri, in the Shigar Valley, Northern Areas, Pakistan (Blauwet 2006). âąâGood...striated epidotes in matrix, from the Calumet iron mine, Colorado. Epidote was described in 1801 by HaĂŒy...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 |  | | Catalog/List | | Carbonate rich pinkish fine grained mass in Calcite.(Dark Star Mine,Ravalli County, Montana USA) 1 x 14 ÂŁ2...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 ÂŁ 5 5mm ÂŁ3 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 ÂŁ4 up to 1.5cm ÂŁ7 |  | | Report (issue) | | 30 0.14 0.00 Total 100.00 3+ 3+ (1) St. Marcel, Italy; corresponds to (Ca1:78 Mn 2+ 0:13 Na 0:10 K0:03... quartz, calcite. Distribution: Many localities. In the Praborna mine, south of St. Marcel, Val d'Aosta...d'Aosta, Piedmont, Italy. In Sweden, on SĂorhÂș arÂș as and Rakten, Ultevis, Norrbotten, and at Jakobsberg...Garnet Lake and in the Agnew Meadow mine, Madera Co., and in the Braito mine, Plumas Co., California; in the...Tucson Mountains, Pima Co., Arizona; at the Idarado mine, Ouray Co., Colorado; in Yuba Canyon, Peavine Mountain |  | | 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) | | Tungsten-bearing rutile from the Kori Kollo gold mine, Bolivia C. M. R~CE, K. E. DARKE, J. W. STILL Department...hydrothermal alteration zone at the Kori Kollo gold mine, Bolivia. 9 1998 The Mineralogical Society Geological...Geological setting Kori Kollo is the largest gold mine in Bolivia, and is a precious-metal-rich variety...a number of minerals including clinopyroxene, calcite and titanite (e.g. Larsen, 1981; Reeder and Paquette...(1990) Oscillatory zoning of Mn in solution-grown calcite 428 W-BEARING RUTILE crystals. Earth Sci. Rev |
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Praborna Mine, Saint-Marcel, Aosta Valley, Italy