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Rendiconti Lincei

, Volume 1, Issue 4, pp 379–385 | Cite as

Cummingtonite nelle plutoni ti della Val Blandino (Como)

  • Luisa De Capitani
  • Giuseppe Liborio
  • G. Schiavinato
Mineralogia
  • 30 Downloads

Riassunto

Viene segnalata la presenza di cummingtonite sia come unico anfibolo, associato talora a pirosseni, sia concresciuta con Ca-anfiboli in zone marginali, prevalentemente gabbrodioritiche, delle plutoniti della Val Biandino. Ľinterpretazione dei dati cristallochimici ha permesso di chiarire il significato di questo minerale in relazione alle ipotesi di messa in posto ed evoluzione delle plutoniti stesse.

Cummingtonite in the plutonio masses of Val Biandino (Como, Italy)

Abstract

Cummingtonite occurs in the marginal rind of the Val Biandino intrusion (Orobic Alps, Como, Italy), both as the only amphibole phase in association with pyroxene, and as linked to calcian amphiboles of different types. Crystalchemical data point out the relationship of cummingtonite with the early stage of intrusion of the Val Biandino masses.

Key words

Cummingtonite Ca-amphiboles Plutonic rocks Val Biandino Southalpine Basement 

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Copyright information

© Accademia nazionale dei Lincei 1990

Authors and Affiliations

  • Luisa De Capitani
    • 1
  • Giuseppe Liborio
    • 1
  • G. Schiavinato
    • 1
  1. 1.Dipartimento di Scienze della Terra - Sezione MineralogiaUniversità degli Studi di Milano Via S. BotticelliMilano

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