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Praborna Italy

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Journal Article
Published: 01 February 2000
The Canadian Mineralogist (2000) 38 (1): 101–117.
...Elena-Adriana Perseil; Philippe Blanc; Daniel Ohnenstetter Abstract We describe important variations in the crystal chemistry of fluorapatite from the manganiferous deposit at the St. Marcel – Praborna mine in the Val d’Aosta, Italy. Three types of fluorapatite were observed...
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Journal Article
Published: 01 June 1999
The Canadian Mineralogist (1999) 37 (3): 673–678.
Journal Article
Published: 01 October 1997
Mineralogical Magazine (1997) 61 (5): 655–669.
...David C. Smith; Elena-Adriana Perseil Abstract The petrographical, crystal-chemical and petrogenetical aspects of rutile rich in antimony (up to 33.75 wt.% Sb 2 O 5 ; equal to 0.2 Sb (super +) per O = 2) from St. Marcel-Praborna in the Aosta Valley, Italy, were re-examined. These compositions occur...
Journal Article
Published: 01 August 1996
European Journal of Mineralogy (1996) 8 (4): 655–665.
Journal Article
Published: 01 December 1995
Mineralogical Magazine (1995) 59 (4): 717–734.
Journal Article
Published: 01 August 2010
European Journal of Mineralogy (2010) 22 (4): 577–594.
... ). However, a discussion arose on the origin and evolution of the few Mn ores associated with meta-ophiolites and strongly metamorphosed at high-pressure conditions, such as those of Praborna (Italy; this study) and Andros (Greece; e.g ., Reinecke, 1985 ). Their actual origin, hydrogenous ( i.e...
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Journal Article
Published: 01 August 2020
American Mineralogist (2020) 105 (8): 1242–1253.
... conditions of this mineral. The Praborna manganese ore (Saint-Marcel valley, Italy; Fig. 1 ), hosted in metaophiolites belonging to the Zermatt-Saas unit of the Western Italian Alps, has been interpreted as an hydrothermal Mn-oxide deposit embedded in cherts covering the Jurassic oceanic lithosphere...
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Journal Article
Published: 01 September 2006
European Journal of Mineralogy (2006) 18 (5): 569–582.
...+ in the M1 site; it occurs at the Praborna manganese mine, Saint-Marcel, Aosta valley, Italy, in a Mesozoic eclogite-facies ophiolitic unit of the western Alps. Associated minerals are rhodochrosite and Mn-pyroxenoid, with minor calderite, spessartine, hematite and pyrophanite. The structural formula is A1...
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Journal Article
Published: 01 March 2003
European Journal of Mineralogy (2003) 15 (2): 427–433.
...+ , Al). In rutile from St. Marcel-Praborna, Italy, Smith & Perseil (1997) recognised that Sb is present entirely as Sb 5+ , and substitutes for Ti 4+ by the following cation exchange mechanism: 2 VI M 4+ ↔ VI M 3+ + VI M 5+ , where VI M 3+ = (Al, Cr, Mn, Fe) 3+ . The rutile...
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Journal Article
Published: 01 March 2014
European Journal of Mineralogy (2014) 26 (1): 171–178.
... literature, only two other phases belonging to this group were described with a double b (or c , according to a tetragonal cell) periodicity, i.e . ferrihollandite from Kajlidongri, India ( Mukherjee, 1960 ) and strontiomelane from Praborna, Italy ( Meisser et al. , 1999 ). In the priderite group...
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Journal Article
Published: 01 October 2013
Mineralogical Magazine (2013) 77 (7): 3027–3037.
... not show any peak in the O–H bending and stretching regions. A similar sharp absorption peak at 3613 cm −1 was observed by Brugger et al. ( 1997 ) in a roméite-group mineral from Praborna, Italy; on the contrary, the specimen from Fianel, Switzerland, showed no such peak, owing to its F-rich nature...
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Journal Article
Published: 01 August 2014
Mineralogical Magazine (2014) 78 (4): 919–940.
... of many thinner fibrils, intricately intergrown and separable by mechanical stress. This present study describes an atypical occurrence of sepiolite from Perletoa village, in the Gressoney Valley near the town of Aosta (Western Alps, Italy), showing unusually long fibres wrapped by a sheath...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 June 2017
Lithosphere (2017) 9 (3): 399–407.
... , A. , and Tartarotti , P. , 2015b , Tectonic significance of different block-in-matrix structures in exhumed convergent plate margins: Examples from oceanic and continental HP rocks in inner western Alps (northwest Italy) : International Geology Review , v. 57 , p. 581 – 605 , doi:10.1080/00206814.2014.943307...
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Journal Article
Published: 01 January 2009
American Mineralogist (2009) 94 (1): 121–134.
... epidotes from Praborna (St. Marcel, Aosta Valley, Italy). European Journal of Mineralogy , 8 , 655 –665. Drake, M.J. and Weill, D.F. ( 1972 ) New rare earth elements standards for electron microprobe analysis. Chemical Geology , 10 , 179 –181. Ercit, T.S. ( 2002 ) The mess that is allanite...
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Journal Article
Published: 01 September 2006
European Journal of Mineralogy (2006) 18 (5): 551–567.
... Praborna mine, St. Marcel, Aosta Valley, in the Italian Western Alps, was named piemontite (originally “Piemontit” ) by Kenngott (1853) . The English spelling of the Italian word Piemonte is Piedmont, and Dana (1896) arbitrarily anglicized the mineral name to piedmontite. However, the Italian region...
FIGURES
Journal Article
Published: 01 October 2012
European Journal of Mineralogy (2013) 25 (1): 85–90.
... mineral of the cryptomelane group from St. Marcel-Praborna, Aosta Valley, Italy . Can. Mineral. , 37 , 673 – 678 . Mitchell R.H. Haggerty S.E. ( 1986 ): A new potassium vanadium barium titanate related to priderite from the New Elands kimberlite, South Africa . N. Jb. Mineral. Mh...
Journal Article
Published: 01 February 2008
American Mineralogist (2008) 93 (2-3): 451–455.
..., Italy . Mineralogical Magazine , 41 , 400 – 402 . Brigatti , M.F. , Frigieri , P. , and Poppi , L. ( 1998 ) Crystal chemistry of Mg-, Fe-bearing muscovite 2 M 1 . American Mineralogist , 83 , 775 – 785 . Bruno , M. , Compagnoni , R. , Hirajima , T...
FIGURES
Journal Article
Published: 01 January 2005
Reviews in Mineralogy and Geochemistry (2005) 57 (1): 291–305.
... species of the cryptomelane group from St. Marcel-Praborna, Aosta Valley, Italy . Can Mineral 37 : 673 – 678 Menard HW , Shipek CJ ( 1958 ) Surface concentrations of manganese nodules . Nature 182 : 1156 – 1158 Mitchell RH , Yakovenchuk VN , Chakhmouradian AR...
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Journal Article
Published: 27 January 2015
The Canadian Mineralogist (2014) 52 (5): 799–808.
... in synthetic and biological apatites . Calcified Tissue International 63 , 475 – 481 . Perseil , E. , Blanc , P. , & Ohnenstetter , D. ( 2000 ) As-Bearing fluorapatite, St. Marcel – Praborna, Italy . Canadian Mineralogist 38 , 101 – 117 . Rinaudo , C. , Gastaldi...
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Series: Geological Society, London, Geology of Series
Published: 01 January 2008
DOI: 10.1144/CEV2P.9
EISBN: 9781862393899
...), Bosnia-Herzogovina (BiH), Croatia (HR), Czech Republic (CZ), Denmark (DK), France (F), Germany (D), Hungary (H), Italy (I), Lithuania (LT), Luxembourg (L), the Netherlands (NL), Poland (PL), Russia (RU), Serbia (SRB), Slovakia (SK), Slovenia (SLO), Spain (E), Switzerland (CH). Several...
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