(Monte Cavalluccio, Caldera di Sacrofano, Sacrofano, Campagnano di Roma, Roma, Lazio, Italia)
Mottanaite-(Ce) was found in miarolitic cavities and voids in feldspathoid-bearing alkali-syenitic ejectum from the lower pyroclastic flow of the Sabatini volcanic complex.
Peprossiite-(Ce) was found in vugs of sanidinite ejectum within the pyroclastites of the Sacrofano volcanic centre. It results from the late-stage deposition from pneumatolytic to hydrothermal fluids circulating through the solidified sanidinites.
Ref.:
Fabio Bellatreccia, Enrico Caprilli, Giancarlo Della Ventura, Salvatore Fiori, Paolo Rossi (1999): Scheelite (CaWO4) e ferberite (FeWO4) associate a minerali di Th, U e REE negli inclusi sienitici del Lazio ed ipotesi genetiche - Rend. Fis. Acc. Lincei, s. 9, v. 10 (1999) 1, 9-19.
Mineral List:20 entries listed. 18 valid minerals. 2 type localities (valid minerals).
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