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Breithorn-Roccia Nera ridge (Breithorn-Schwarzfluh ridge; Breithorn ridge), 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:~3km
Name(s) in local language(s):Catena Breithorn-Roccia Nera (Catena del Breithorn; Chaîne du Breithorn et du Schwarzfluh; Chaîne du Breithorn; Breithorn-Schwarzfluh-Kamm; Breithornkamm), Champoluc, Ayas, Val d'Ayas, Valle d'Aosta (Vallée d'Aoste), Italia
Other regions containing this locality:The Alps, Europe


The Breithorn-Roccia Nera/Schwarzfluh ridge, or more simply Breithorn ridge, is located on the border between Aosta Valley (Italy) and Valais (Switzerland) and consists of five peaks: Breithorn Occidentale (Breithorn Occidental)/Breithornwestgipfel (4165 m), Breithorn Centrale (Breithorn Central)/Breithornmittelgipfel (4160 m), Breithorn Orientale (Breithorn Oriental)/Breithornostgipfel (4139 m), Gemelli del Breithorn (Zwillinge or Jumeaux du Breithorn)/Breithornzwillinge (4106 m), Roccia Nera (Roche Noire)/Schwarzfluh (4075 m). Schwartzruken is an alternative German name for Schwarzfluh.

The Italian side of this ridge is competely made of magnetite-bearing antigorite serpentinite (ophiolitic Zermatt-Saas nappe) with lenses and veins rich in reddish titanclinohumite, diopside, and olivine (forsterite). Rodingite bodies are known near the summit of Roccia Nera/Schwarzfluh and in the Breithorn area.

Minerals reported from the Swiss side are listed separately (see http://www.mindat.org/loc-144452.html).

Mineral List


8 valid minerals.

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References

Dal Piaz, G.V. (1967) Le "granatiti" (rodingiti l.s.) nelle serpentine delle Alpi occidentali italiane. Memorie della Società Geologica Italiana, 6, 267-313.

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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