“Fe-rich, analysed (EPMA + IR + Raman) chrysocolla. Collection and photo Giorgio Bortolozzi. The simplified formula (O = 9), based on EPMA results, is [Cu1.06,Fe0.94](Si2O5)(OH)4·nH2O, i.e., a Cu-dominant composition. The Raman and IR spectra are very similar to that of "chrysocolla" reported in the literature. This material was described in: Bortolozzi, G., Ciriotti, M.E., Bittarello, E., and Moeckel S. (2015) Monte Avanza, Forni Avoltri; Carnia (Udine, Friuli-Venezia Giulia): conferme e nuovi ritrovamenti. Micro, 1-2015, 2-39.”