Articles | Volume 35, issue 3
https://doi.org/10.5194/ejm-35-347-2023
https://doi.org/10.5194/ejm-35-347-2023
Research article
 | 
31 May 2023
Research article |  | 31 May 2023

Late metamorphic veins with dominant PS-15 polygonal serpentine in the Monte Avic ultramafite

Luca Barale, Giancarlo Capitani, Paolo Castello, Roberto Compagnoni, Roberto Cossio, Gianluca Fiore, Linda Pastero, and Marcello Mellini

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Short summary
The first occurrence of centimeter-thick PS-15 polygonal serpentine veins from ultramafics of Monte Avic, Val d'Aosta, is here reported. The combined mineralogical study led by three techniques with different resolutions has provided new analytical tools capable of recognizing the PS-15 polygonal serpentine. In particular, X-ray powder diffraction data (XRPD) and micro-Raman recognize polygonal serpentine more quickly and easily than transmission electron microscopy (TEM) but equally rigorously.