... sedimentary rocks sheet silicates silicates siliceous Southern Europe stratigraphy Tintinnidae Val di Vara Val Graveglia ...

...L. Bindi; C. Carbone; D. Belmonte; R. Cabella; R. Bracco Abstract Weissite, Cu 2– x Te ( x ≈ 0.21), a very rare copper telluride, occurs in a sample from the Gambatesa mine, Val Graveglia, Liguria, Italy, where it occurs as purplish black anhedral grains up to 0.1 mm in length and shows a black...

...L. Bindi; C. Carbone; R. Cabella; G. Lucchetti Abstract Bassoite, ideally SrV 3 O 7 ·4H 2 O, is a new mineral from the Molinello manganese mine, Val Graveglia, eastern Liguria, northern Apennines, Italy. It occurs as black euhedral to subhedral grains up to 400 μm across, closely associated...

...Stuart J. Mills; Luca Bindi; Marcella Cadoni; Anthony R. Kampf; Marco E. Ciriotti; Giovanni Ferraris Abstract Paseroite, ideally PbMn 2+ (Mn 2+ ,Fe 2+ ) 2 (V 5+ ,Ti,Fe 3+ ,□) 18 O 38 , is a new mineral (IMA2011-069) from fossil wood in the upper part of the Molinello mine, Val Graveglia, Italy...

...Mariko Nagashima; Thomas Armbruster Abstract Saneroite, Na 1–1.5 Mn 5 [Si 5 O 14 (OH)](Si,V,As)O 3 (OH) ( Z = 2, space group P 1̅), has only been reported from two localities: (1) Val Graveglia, Italy, and (2) Fianel, Switzerland. Samples from both localities were studied using electron-microprobe...

...Maria Franca Brigatti; Enrico Caprilli; Marco Marchesini Abstract Poppiite, a new mineral from Gambatesa mine (Val Graveglia, Genova, Northern Italy), is the V 3+ end-member of the pumpellyite group [ [VII] (Ca 7.68 Na 0.27 K 0.03 Rb 0.02 ) ∑8.00 [VI] (V 3+ 1.26 Fe 3+ 1.02 Mg 0.78 Mn 2+ 0.59 Al...

...F igure 1. SEM image of a crystal from the Molinello Mine, Val Graveglia, Italy (image courtesy of S. Magnanelli, Ferrania Imaging Technologies). Scale bar 100 μm. ...

...Maria Franca Brigatti; Enrico Caprilli; Marco Marchesini; Luciano Poppi Abstract Single-crystal X-ray diffraction experiments were carried out on roscoelite crystals from Reppia, Val Graveglia, Italy. Roscoelite [structural formula: XII (Ba 0.006 K 0.994 ) IV (Si 3.150 Al 0.850 ) VI(Al 0.040 Fe...

... blueschist facies (Cravasco/Voltaggio U.), 0.34 (± 0.06) °Δ2𝛉 in the pumpellyite-actinolite facies (Mt. Figogna U.), and 0.53 (± 0.07) °Δ2𝛉 in the prehnite-pumpellyite facies (Bracco/Val Graveglia U.). In the TDU average CIS scale-standardized IC values vary from 0.27 ± 0.03 to 0.30 ± 0.03 °Δ2𝛉 in rocks...

... manganiferous veins. The geology is similar to that of the more famous Val Graveglia manganese district to the east ( Cortesogno et al. , 1979 ; Marchesini & Pagano, 2001 ). Stratiform manganese ores are located near the base of a chert sequence in the ‘Diaspri di Monte Alpe’ formation, which overlays...

... – 0.52 0.47 0.49 I + Chl + I-S? Population 9 : 
 Bracco/Val Graveglia Unit 
 (Internal Ligurid Units, N Apennines E Liguria, Italy) 
 Palombini Shale Formation Diagenesis Qtz + Cal + Pl + I + Chl± I-S± K/Na mica 82 0.46 0.45 0.39 0.45 I + Chl 83 0.45 0.44...

... ardennite group In the Val Graveglia (Northern Apennines, Liguria, Italy) rare and new minerals are widespread in manganese ore deposits and in silicified woods associated to metacherts (“Diaspri di M. Alpe” Formation) that occur at Molinello, Gambatesa, Statale, and Cassagna mines ( Cortesogno...

.... This surface had to be reduced to about 3 × 3 μm 2 to analyze the small inclusions of fianelite. The quality of the analytical procedure was verified by analyzing simultaneously large (up to 5 mm) crystals of reppiaite from Val Graveglia, Italy. The resulting empirical formula of reppiaite (average of four...

... plains [ e.g. , Ködnitz Valley, Eastern Alps; Abrecht (1990) ; Graubünden, Central Alps; Geiger (1948) ; Praborna and Val Graveglia, Southern Alps; Martin-Vernizzi (1984) , Cortesogno et al. (1979) ; Haute-Maurienne, Western Alps; Chopin (1978) ]. These deposits are all related to the opening...

... specimen from each of the following localities was studied: (1) Salam-Château, Ardennes, Belgium (type locality: Donnay and Allmann, 1968 ), and (2) Vernetto mine, Val Lanzo, Torino, Piedmont, Italy. Tiragalloite: A specimen from the Gambatesa mine, Val Graveglia, Liguria, Italy (type locality...

..., and allowed the genesis of a great variety of rare and new minerals, both at Cerchiara ( e.g . Basso et al. , 1993 , 1997 , 2000 ; Cabella et al. , 1993 ) and the nearby manganese mines of Val Graveglia ( e.g . Lucchetti et al. , 1981 ; Basso et al. , 2005 , 2008 ; Bindi et al. , 2011 , 2013...