 | | 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, Godard, Gaston, Martin, Silvana, Malaspina, Nadia, Poli, Stefano (2015) Ultra-oxidized rocks in subduction mélanges? Decoupling between oxygen fugacity and oxygen availability in a Mn-rich metasomatic environment. Lithos, 226. 116-130 doi:10.1016/j.lithos.2014.12.008 | Journal (article/letter/editorial) | | Milano, via b NU Mangiagalli 34, I-20133 Milano, Italy; simone.tumiati@unimi.it Institut de Physique du...degli Studi di Padova, via Giotto 1, 35137 Padova, Italy d Dipartimento di Scienze dell’Ambiente e del...Scienza 4, 20126 Milano, Italy CE ABSTRACT The manganese ore of Praborna (Italian Western Alps) is...on this dataset and the observed assemblages at Praborna, thermodynamic calculations show that these mélange...with care. From the study of mélange rocks at Praborna, the distribution of oxygen at subduction zones |  | 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 D’Aosta, 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 D’Aosta, Italy): Its Trace Elements and Spectroscopic...Diopside-Omphacite, Violane Variety, from Saint Marcel (Val D’Aosta, Italy): Its Trace Elements and Spectroscopic...Milan, Italy Department of Earth Sciences “Ardito Desio”, 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 |  | 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) | | 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...rom6ite; spessartine; futile; 'violan' (diopside-aegirine-jadeite); (e.g. de Lom, 1843; Dufrenoy, 1847;...MnO) collected by de Lom (1843) from the St. Marcel-Praborna locality. Fermor (1908) also mentioned 'greenovite' |  | | Journal (article/letter/editorial) | | at the Praborna mine near Saint-Marcel, Val d’Aoste, Italy, and in the upper Maurienne Valley, France...calcite, bustamite, magnetite. 10. Eclogite facies, Praborna, W. Alps (Martin and Kienast, 1987); with hematite...facies? Delinesti, Romania, with spessartine, aegirine, pyrophanite, hematite, etc (wetchemical analyses...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 d’Aosta, Italy, on the north-eastern flank of the Gran |  | | Journal (article/letter/editorial) | | MANGANIFEROUS DEPOSITS FROM ST. MARCEL – PRABORNA, VAL D’AOSTA, ITALY ELENA-ADRIANA PERSEIL Laboratoire...manganiferous deposit at the St. Marcel – Praborna mine in the Val d’Aosta, Italy. Three types of fluorapatite...electron-microprobe analysis, arsenic, quencher, St. Marcel – Praborna, Italy. SOMMAIRE Nous décrivons d’importantes...concentrations manganésifères de la mine de St. Marcel – Praborna dans le Val d’Aoste, Italie. Trois types...effet d’inhibition de la luminescence, St. Marcel – 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) | | pink manganian phengite, blue–purple manganian aegirine–jadeite, microcline, albite and quartz. In addition...identity. In backscattered electron images, many aegirine–jadeite grains appear patchy and show variable...is from the Praborna mine near St. Marcel, 123 Contrib Mineral Petrol Val d’Aoste, Italy (e.g., Penfield...Corsaglia near Ponte dei Gorrazzi in Piedmont, Italy (Cabella et al. 1992). Here, we describe a new occurrence...(3T polytype; 8–15 vol%), blue–purple manganian aegirine– jadeite (2–10 vol%), braunite (5–8 vol%), hollandite |  | | Catalog/List | | flat calcite-- attractive piece 6x4. Whitesmith Mine Stontian Scotland £25 7 ElJDIAL YTE rich red masses...masses with very minor Astrophyllite/Aegirine on one edge 3x3cm Khibiny Massif Kola Russia £ I 2 8 DA TOLlTE...all over the top surface 4x3cm Cassagna Mine, Ne Liguria Italy £ 25 14 STRONTIO-ORTHO JOAQU1N1TE one yellow...pinkish micro crystals on Boracite crystals Boulby mine Loftus Yorkshire 3x2cm £18 16 PRICEITE hard white...crystal sections on lx2cm surface Molinello Mine, Val Graveglia Italy £8 18 NATIVE COPPER a cleaned piece 8x5cm |  | | 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) | | that was investigated is found at the Byrud emerald mine, in Eidsvoll, Akershus, southern Norway. The mineralization...pegmatite in the upper reaches of the Petreliusa River valley, Khibiny alkaline massif, Kola Peninsula Russia...eudialyte associated with cancrinite, albite, aegirine-augite, alkali amphibole, and biotite. Georgbarsanovite... 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 |  | | 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 |  | | Catalog/List | | 2H2O_______ _______________ Pale cream ___ Brosso ~ Mine ••••'■• ,ivrea,Italy__________________________________...Germany___ _____ 2 Na2Ca(Fe2+.Mg)5Si8Q22(OH)2 ' __ Praborna,Aosta,Italy________ ____________ _____ BaFe2+SI40io...--__- ___ -Fe2+23AI4(PO4)4(OH)6.2H2O_" _ Cordon Mine,Hamton,Ne^da,USA 2 2~ZT ~CdS_____ __________ ._______...LANGBANITE_______ _____ SanVenanzo.Orvieto,Umbria,Italy ____________ KAlSiO4 _____ Santa Barbara County...MINIU i 31 [lMISERITE________ _____ TonopahBelmqnt Mine,Maricopa County, Arizona, USA SELADONITE _________ |  | | Journal (article/letter/editorial) | | found at Hashupa and at Alchuri, in the Shigar Valley, Northern Areas, Pakistan (Blauwet 2006). • Good...striated epidotes in matrix, from the Calumet iron mine, Colorado. Epidote was described in 1801 by Haüy...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 | | (Near Kyle Scotland) 1x2ins 60p 2x2 t1.50 2 AEGIRINE elongated black crystal sections about 1 ins long...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 |  | | Catalog/List | | Ix1/, £5 ANALCIME Taliskcr Bay, Skye, Scotland AEGIRINE Mount Malosa, Zomba District, Malawi 17 2 Rich...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 |  | | Catalog/List | | ___ 2x2£3 ___ - -----~ - ~014_ _ 88 ADAMITE Ojuela Mine, Mapimi, Mexico 69 ALUMOHYDROCALCITE South Bay,...½x½ £3 Ix½__~~ _ .. !~ _!LO-- -- ·- · ~~1 ~0/~ 2 AEGIRINE Mount Malosa, Zomba District, Malawi 1073 AMBL...- - --··---- - - - - - · . 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 |  | | Catalog/List | | Vetralla Italy) Ixlins £4.50 396 TORBERNITE Cu UO PO/4 slightly radioactive. (Old Gunislake Mine Cornwall)...Phlogopite Mica. (Possibly slightly radioactive)(Palabora Mine,S.Africa lxl £5 1x2 £10 WITH UNUSUAL ELEMENTS...sections in matrix with Eudialyte.Rare not Rich (Umba Mine,Lovozero Massif,Kola Russia) lxl £4 1x2 £7.50 239...silvery areas in matrix with Tellurite. (La Bambolla Mine Moctezuma, Sonora Mexico) lxl £10 14 x 54 ins £5...CO/3 0 Quite rich yellow crusts on matrix. (Outpost Mine, San Domingo Wash Maricopa County Arizona) lx)4ins |  | | 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...(Ti Nb 0 rich black nasses in matrix (Karnasurt Mine, Revda, Kola Peninsula, Russia) lxl E2.50 lx2 ins...PO/~ • yellowish plates on mauvEUssingit~ (UmDa Mine, Reuda, Kola Peninsula • Russia) (6a pure plate...Group) rich fawnmassive. Xrayed meial. (Sjogruvan Mine, Grythyttan, Sweden) lxl fl.50 lx2 E3 2x2 E6 053 |  | | Catalog/List | | calcite or matrix 935 ■ MILLOSEVICHITE Scholler Mine, Kladno, Czech Republic. Rich yellow-grey spongy...-·-·-- !'lo_9_ _ _ _ _ 285 ■■ NATIVE GOLD La Farolla mine, Copiapo, Chile one or two spots on 2cm matrix _£7_..._ _ _ _ __ ~ - / ~ : i E.RTRANDITE ____ .Gclc~~~Mine, G~~e~~;i~;Val~d~~~;: srazitcolourless micro crystals...----- ----- - -- 73 ■■ BRAUNITE Praborna Mine, St Marcel ,Piedmont, Italy 849 ■ OPAL Carlaze Pit St Austell...----- - - ------- ----- 1001 ■■ BRUCITE N'chwaning Mine, Kuruman, S. Africa Creamy to pale green ,rich foliated |  | | 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...½" £3 Ix½ £5 Zn AsO/4 ½" £3 Ix! £6 BaCa .C0/3 2 AEGIRINE Mount Malosa, Zomba District, Malawi 975 ALTHAUSITE...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 |  | | 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...strorage well ! Cut and polished mauve slab with Aegirine o Microclinc. Attractive Pure colourless to grey...Goldstrike Pit, Elko,Nevada. U.S.A Divino des Laranjeiras Mine, Minas Gerias,Brazil Magnet Cove,Arkansas,USA ½ |  | | Book (edition) | | MINE andtheir LOCALITIES JAN H. BERNARD AND JAROSLAV HYRSL INERALS DESCRIBED SINCE 2004 MINERALS...dist., China Fluomatromicrolite, x 25111111, Naipa mine, Mozambique Daliranite, 5111111, Zarshouran Au-As...Domafov, Czech Rep. Juangodoyite, 60111111, Santa Rosa mine, Chile Back cover photo: Ho/fertile on hematite...piment pseudomo,phs after realga,; 75 mm, Palomo mine, Pen, Page 3: Stepite on arsenic, 45 111111,Jachymov...Saint Sainte island mount, mountain Mts. R. Penin. Vole |  | | Journal (issue) | | Articles Large barite crystals from the Elandsrand gold mine, South A fr ic a ................................. Lyckberg Prehnite from La Combe de la Selle, Saint Christophe-en-Oisans, Isere, France...............Paterson (NJ), Brumado district Museum, Himalaya mine $10 (Brazil), Bosch Collection $10 v.9/#5 Turkish...(PA-MD), Mcguinnessite v Pereta Mine (Italy), Cetine Mine (Italy) v Mineral Fraud, LeadhillsWanlockhead...$10 v .15/#5 Jacupiranga mine (Brazil), Jensen quarry (CA), Cunha Baixa mine, Paulkerrite $10 .16/#4 |  | Macdonald, R., Bagiński, B., Kartashov, P. M., Zozulya, D., Dzierżnowski, P. (2015) Hydrothermal alteration of chevkinite-group minerals. Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia. Mineralogical Magazine, 79 (5) 1039-1059 doi:10.1180/minmag.2015.079.5.02 | Journal (article/letter/editorial) | | aplite veins; 2, mineralized granite veins; 3, aegirine-arfvedsonite granite; 4, amphibolite and basic...heavily mineralized Ca-Naamphibole-lepidomelane-aegirine-quartz-feldsparepidote metasomatite. The associated...ALTERATION OF CHEVKINITE Baveno pink granite, Italy. The cation sums range from 2.91 to 3.07 a.p.f.u...the contact aureole of the Adamello batholith, Italy, by Gieré and Williams (1992) and in aeschynite-(Ce)...altered titanite from Tre Croci, Vico complex, Italy, but suggested that at least some of the REE present |
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