..., Padova, Italy . Demartin F. Gramaccioli C.M. ( 2008 ) The crystal structure of Cervandonite-(Ce), an interesting example of As 3+ → Si diadochy . The Canadian Mineralogist , 46 , 423 – 430 . Demartin F. Gramaccioli C.M. Pilati T. ( 1994 ) Paraniite-(Y), a new...

... ] ( Demartin and Gramaccioli 2008 ); fetiasite [(Fe 2+ ,Fe 3+ ,Ti) 3 O 2 (As 2 3+ O 5 )] ( Graeser et al. 1994 ); gasparite-(Ce) [(Ce,La,Nd)AsO 4 ] ( Graeser and Schwander 1987 ); and paraniite-(Y) [Ca 2 Y(AsO 4 )(WO 4 ) 2 ] ( Demartin et al. 1994 ). Fergusonite single crystal X-ray diffraction...

...) (Armbruster et al. , 1988 ), fetiasite (Graeser et al., 1994 ), gasparite-(Ce) (Graeser and Schwander, 1987 ) and paraniite-(Y) (Demartin et al. , 1994 ). Mount Cervandone is also the type locality of deveroite-(Ce), a natural REE-oxalate (Guastoni et al. , 2013 ). Marchettiite ( Fig. 1...

... 2 gasparite-(Ce) (Ce,REE)AsO 4 giessenite (Cu,Fe) 2 Pb 26.4 (Bi,Sb) 19.6 S 57 graeserite Fe 4 3+ Ti 3 As 3+ O 13 (OH) hatchite AgTlPbAs 2 S 5 hutchinsonite TlPbAs 5 S 9 jordanite Pb 14 (As,Sb) 6 S 23 molybdenite MoS 2 orpiment As 2 S 3 paraniite-(Y) (Ca,Y...

... that led to partial replacement of the original grains of fluorapatite by As-rich fluorapatite, and to the appearance of paraniite-(Y) in scheelite–powellite ( Brugger et al. 1998 ). A hematite – quartz – carbonate – fluorapatite –strontian barite schist, up to 1 m thick, crops out at Piz La Mazza...

..., hematite, hingganite-(Y), hundolmenite-(Y), jarosite, lazulite, magnetite, mitridatite, monazite-(Ce), monazite-(La), paraniite-(Y), pyrite, pyrrothite, rhabdophane-(Nd), rutile, schorl–dravite tourmaline series, thortveitite, titanite, wulfenite and xenotime-(Y) ( Bracco et al. , 2006 , 2007 , 2009...

.... , Gramaccioli , C.M. & Pilati , T. ( 1994 ): Paraniite-(Y), a new tungstate arsenate mineral from Alpine fissures . Schweiz. Mineral. Petrogr. Mitt . 74 , 155 – 160 . Edenharter , A. , Nowacki , W. & Weibel , M. ( 1977 ): Zur Struktur und Zusammensetzung von Cafarsit...

... is: superior: 3, excellent: 2, good: 0, fair: 1, poor: 6, incomplete data: 6. Listed here are the minerals in the fair category: phyllotungstite, in the poor category: cuprotungstite, paraniite-(Y), pinalite, scheelite, tungstibite and yttrotungstite-(Y), and in the incomplete data category: anthoinite...

...-particle irradiation . Proc. Phys. Soc. Lond. , A64 , 511 . Brugger , J. , Gieré , R. , Grobety , B. and Uspensky , E. ( 1998a ) Scheelite-powellite and paraniite-(Y) from Fianel, Val Ferrera, GR (Swiss Alps) . Amer. Mineral. , 83 , 1100 – 10 . Brugger , J...

... ) is not surprising as other REE type-locality minerals from this occurrence are the arsenite cervandonite-(Ce), the arsenates paraniite-(Y) and gasparite-(Ce), and the oxalate deveroite-(Ce), see also Guastoni et al. (2006) . One would expect that REE 3+ incorporation at Ca sites ( Fig. 2 ) follows the equation...

...), Nb-anatase, As-fergusonite-beta-(Y), cervandonite-(Ce), chernovite-(Y), crichtonite-senaite, fluorite, gadolinite-(Y), monazite-(Ce), paraniite-(Y), synchysite-(Ce), and xenotime-(Y)] as well as meter-long quartz veins crosscutting pegmatite dikes. Deveroite-(Ce) crystallization related...

... . Brugger J. Gieré R. Graeser S. Meisser N. (1997) The crystal chemistry of roméite . Contributions to Mineralogy and Petrology , 127 , 136 – 146 . Brugger J. Gieré R. Grobety B. Uspensky E. (1998) Scheelite-powellite and paraniite-(Y) from Fianel, Val Ferrera...

... , P. ( 1986 ) Kusuite becomes plombean wakefieldite (Ce) . Bulletin de Mineralogie , 109 ( 3 ), 305 . Demartin , F. , Gramaccioli , C.M. , and Pilati , T. ( 1994 ) Paraniite-(Y), a new tungstate arsenate mineral from Alpine fissures . Schweizerische Mineralogische und...

..., cassiterite, cerussite, chernovite-(Y), churchite-(Y), clinochlore, fergusonite-(Y), gorceixite, goyazite, hematite, hingganite-(Y), hundolmenite-(Y), jarosite, magnetite, mitridatite, monazite-(Ce), monazite-(La), paraniite-(Y), pyrite, pyrrhotite, rhabdophane-(Nd), rutile, schorl-dravite tourmaline series...

..., eastern Swiss Alps . Can Mineral 38 : 1075 – 1101 Brugger J , Gieré R , Grobéty B , Uspensky E ( 1998 ) Scheelite-powellite and paraniite-(Y) from the Fe-Mn deposit at Flanel, eastern Swiss Alps . Am Mineral 83 : 1100 – 1110 Bulnaev KB ( 1996 ) Origin...