Italian Journal of Geosciences - Vol. 129 (2010) f.2

Phreatic sulphide bearing quartz breccias between crystalline basement and Collio formation (Southern Alps, Italy)

Diego Servida(*), Marilena Moroni(*), Daniele Ravagnani(**), Franco Rodeghiero (***), Ida Venerandi(*), Luisa De Capitani(*) & Giovanni Grieco(*)
(*) Università degli Studi di Milano, Dipartimento di Scienze della Terra «A. Desio», Via Botticelli, 23 - 20133 Milano (Italy), tel. 02/50315619, e-mail: ida.venerandi@unimi.it (**) GeoTer, Via Rossini, 2 - 24020 Ardesio (BG, Italy). (***) Università degli Studi di Milano Bicocca, Dipartimento di Scienze Geologiche e Geotecnologie - Piazza della Scienza, 4 - 20126 Milano (Italy).


DOI: https://doi.org/10.3301/IJG.2010.03
Volume: 129 (2010) f.2
Pages: 223-236

Abstract

In this work a report is given of the geological, petrographic and ore mineralogical features of several sulphide-bearing quartz breccias (SQB) bodies outcropping in a structurally complex sector of the Orobic Alps (Southern Alpine domain) and close to the uranium-rich mining area of Novazza. Although little studied, these breccia bodies were previously attributed to different genetic processes and/or geological domains (e.g., Crystalline Basement, Basal Conglomerate formation). The features of the SQB bodies suggest a hydrothermal origin likely related to the large-scale hydrothermal process causing the formation of the nearby uranium ore deposit at Novazza.

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