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Palon di Resy, Champoluc, Ayas, Ayas Valley, Aosta Valley, Italy

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 45° North , 7° East (est.)
Margin of Error:~10km
Other regions containing this locality:The Alps, Europe
Köppen climate type:Dfc : Subarctic climate
Name(s) in local language(s):Palon di Resy (Palon de Resy), Champoluc, Ayas, Val d'Ayas, Valle d'Aosta (Vallée d'Aoste), Italia


Palon di Resy (2675 m), also spelled as Pallon in the old mountaineering literature, is a mountain located SW of Monte Rosso di Verra (3021 m), W of Punta Bettolina (2996 m), and ENE of the village of Fiéry, between the mouths of Vallone della Forca (aka Vallone di Fourcaré, Comba di Fourcaré or Combe de Fourcaré) and Vallone di Verra (aka Comba di Verra, Combe de Verra or Combe de Véraz).

The mountain mainly consists of magnetite-bearing antigorite serpentinite, but its south slope is made of greenschist facies tholeiitic metabasalt, with scattered eclogite relics, and metasedimentary horizons of the so-called Palon di Resy mélange, i.e. garnet micaschists and minor impure marbles with subrounded exotic inclusions of eclogitic-to-retrogressed metabasalt, probably fed by submarine pillow breccia (Dal Piaz, 1992; Dal Piaz & Ernst, 1978; Ernst & Dal Piaz, 1978; Dal Piaz et al., 1979).

At the west foot of the mountain, a little mass of grey-green fractured serpentinite crops out along the dirt road that connects Saint-Jacques-des-Allemands to Pian di Verra Inferiore (Plan de Verra Inférieur), about 300 m before the little bridge on the Verra stream (Torrente Verra). Morenosite with average composition (Ni0.70Mg0.30)SO4∙6.90H20 is found within these fractures as apple-green to grey-green incrustations (Boscardin & Colmelet, 1977).


Mineral List


14 valid minerals.

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References

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Boscardin, M., Colmelet, G. (1977) Morenosite della Val d'Ayas (Aosta). Rivista Mineralogica Italiana, 1 [8], 2, 31-32.
Dal Piaz, G.V., Ernst, W.G. (1978) Areal geology and petrology of eclogites and associated metabasites of the Piemonte ophiolite nappe, Breuil-St. Jacques area, Italian Western Alps. Tectonophysics, 51, 99-126.
Ernst, W.G., Dal Piaz, G.V. (1978) Mineral parageneses of eclogitic rocks and related mafic schists of the Piemonte ophiolite nappe, Breuil-St. Jacques area, Italian Western Alps. American Mineralogist, 63, 621-640.
Dal Piaz, G.V., Di Battistini, G., Gosso, G., Venturelli, G. (1979) Micascisti granatiferi a relitti di omfacite e quarziti a glaucofane e granato nell'unità di Zermatt-Saas della falda ofiolitica piemontese tra St. Jacques ed il Breuil. Rendiconti della Società Italiana di Mineralogia e Petrologia, 35, 2, 815-830.
Dal Piaz, G.V. (1992) Le Alpi dal Monte Bianco al Lago Maggiore - Volume 1. Guide Geologiche Regionali. Società Geologica Italiana, BE-MA Editrice, Milano, 311 pp.
Dal Piaz, G.V. (2004) From the European continental margin to the Mesozoic Thetyan Ocean: A geological map of the upper Ayas Valley (Western Alps). In: Pasquaré, G., Venturini C., (Eds), Groppelli G., (Ass.t Ed.), Mapping Geology in Italy. APAT - Agenzia per la Protenzione dell'Ambiente e per i Servizi Tecnici, Dipartimento Difesa del Suolo - Servizio Geologico d’Italia, S.EL.CA., Firenze, pages 267-272.
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007) Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" di Alba, Ed., Alba, 607 pp.

 
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