 | | Journal (issue) | | Articles The Val Graveglia m anganese district, Liguria, I t a ly .......................................Donato, Italy macco.marchesini@agip.it Renato Pagano Casella Postale 37 1-20092 Cinisello, Italy renpagan@tin... Figure 1. The Val Graveglia area, Genoa Province, Northern Italy. 1— Cassagna mine 2—Gambatesa mine...manganese district of Val Graveglia in northern Italy produced over one million tons of high-grade ore...coastal region of the Tyrrenian Sea is called Liguria: the name is from an ancient people known as the |  | | Report (issue) | | Ca2 (Mn2+ ; Mg)(Al; Mn 3+; Fe)2 (SiO4 )(Si2 O7)(OH)2 ² H2 O Pumpellyite-(Mn2+ ) ° c 2001 Mineral Data...Monoclinic. Point Group: 2=m: [010] and tabular on f001g; ¯ne granular. Platy crystals, to 0.1 mm, elongated along...2.205 (45) Chemistry: SiO 2 TiO2 Al 2 O3 Fe2 O3 Mn2 O3 MnO MgO CaO Na 2 O H2 O Total (1) 35.66 0.02...by di®erence; corresponds to 2+ 3+ 3+ ² (Ca 1:89 Mn2+ 0:08 )§=1:97 (Mn0:89 Mg 0:11 )§=1:00 (Al 1:34 Mn0:50...Si 3:03 O11 (OH)2 1:26H2 O: Mineral Group: Pumpellyite group. Occurrence: In braunite ore in a syngenetic |  | | Journal (article/letter/editorial) | | common occurrence of lawsonite (_+ albite), pumpellyite, and aegirine-jadeite (Jad~ 15- 35)+ quartz (Bavay...reduced pressures within the stability field of pumpellyite (T< 390 ~ C at 8 kbar and <370 ~ C at 5 kbar;...assemblages with albite, epidote, chlorite, pumpellyite, quartz, calcite, titanite, and rare biotite...Massonne 1981 ; Lattard and Schreyer 1981). Pumpellyite and lawsonite have not been found in a wide range...(Mn z+, Ca)4A12(A1, Ti, Mg, Cu 2+, Fe 3+, Mn 3+, ? Mn2+)4[(SiO4)2/(Siz(O,OH)7)z/(OH)6], occurs as prismatic |  | | Journal (issue) | | -From Italy : Fabio Bigazzi ,Via dell'Acqua Ghiaccia, 4 - Fontana - 53038 Staggia Senese - Si Italy - fontana99@valdelsa...Eckermannite and Ferro-eckermannite, Macfallite, Pumpellyite-(Mn) and a top find of Piemontite crystals."...in a Quartz matrix. Very good specimens; -Pumpellyite-(Mn2+) xx , Mt. Vassiliko, Katakalaii, Andros Island...crystals like this are exceptionally rare; -Pumpellyite-(Mn2+) xx , Mt. Vassiliko, Katakalaii, Andros Island...electricity from geothermal energy was confined to Italy and interest in this technology was slow to spread |  | | Book (edition) | | Republic). W.D. Birch (Australia), Elena Bonaccorsi (Italy), Ernst A.J. Burke (Netherlands), L.J. Cabri (Canada)...M. Dcliens (Belgium). Giancarlo Delia Ventura (Italy), T.S. Ercit (Canada). Alexander Falster (USA)....(Canada). L.A. Groat (Canada). Alessandro Guastoni (Italy), William A. Henderson. Jr. (USA). D.D. Hogarth...(ltaly). Igor Pekov (Russia), atale Perchiazzi (Italy). Ole V. Petersen (Denmark). Fedcrico Pezzotta (ltaly)...Radon H In I Ir Fe Kr La Pb Li Lu Mg Mn Hg Mo Nd Ne Ni Nb N Os 0 Pd p Pt K Pr Ra Rn Rhenium Rhodium |  | | Book (edition) | | Tenacity properties in all directions), as No and Ne for optically uniaxial minerals. and as Np, Nm, and...opaque, Juster brown. luster vitreous. H > 4. D = 321. Ne,o = 1.586. metallic. Sectile. H 2-2.5. D = 7.22.... Actinolite - byssolite, 50 mm, Valle d'Aosta, Italy, G short-columnar crystals, usually in granular...Austria, and at Passo di Vizze, Trentino-Alto Adige, Italy. Actinolite asbestos occurs mainly in the Alps between...Mont Blanc, as well as in Val Malenco, Lombardy, Italy. A component of some skarns and eclogites. With |  | | Book (volume) | | 2O where D and M are octahedral cations Mg, Zn, Mn2+, Fe2+, Fe3+ and Al. The transition from monoclinic...and additional octahedra DO6 (typically, D ¼ Fe2+, Mn2+, Zn, Mg or Ca); A, B and C are low-force-strength...constants of bonds formed by oxygen and cations (Fe2+, Mn2+, Zn, Mg), Ca and Na, respectively. 8 1 The Application...involving groups of cations K+ ↔ Na+, Fe2+ ↔ Mg2+ ↔ Mn2+ or anions F ↔Cl) or heterovalent (the typical...Ti4+, Nb5+, Zr4+, Al3+, Fe3+, Y3+, Mn3+, Sn4+, W6+ Mn2+, Fe2+, Mg2+, Zn2+, Ca2+ Na+, K+, Ca2+, Sr2+, Ba2+ |  | | Book | | powstałe w wysokich temperaturach fazy są metastab~ne, to_znaczy choć termodynamicznie nietrwale, są w...rzadki rzadki rzadki 2,5 5,64-5,68 zmeta morfizowa ne rudy Mn i Zn 3,02 skarny 6,45 strefa wietrzenia kruszców...szary, czarny Ba(Mn'\Mn2+) 8 O,6 Sr(Mn•• ,Mn2+)8 O,6 jedn. czarny jedn. Pb(Mn'•,Mn2+)8 O,6 ciemnoszary... czarny 5 4,74k Batiferryt 2001 Ba(Fe2• ,Mg,Mn2<) 2FeHaTi2O,s heks. czarny 6 czarny 6,5 Układ...romb. (Mg,Mn 2 •)z(Mn3 • ,Fe3 •)B0 3 0 2 romb . (Mn2 ♦ ,MglJ (Mn ,FeH) Sb 3(803)15032 romb. 3 5 • 5 |  | | Book (volume) | | southwest¬ ern extension of the Kuril Arc and displays a NE-SW to almost E-W structural trend. Distributed in...early Aptian; ca. 110 -120 Ma). The ore bodies strike NE to N30°E and dip 20 to 40 ° to the NW. The ore beds...calcite and orientite. Mn2+-Pumpellyite-Okhotskite The chemical formulae of pumpellyite group minerals C04:...n(OH)n W: Ca2+, Mn2+ X: Mg2+, Mn2+, Fe2+, Fe3+ Y: AI3+, Mn3+, Fe3+ Z: Si4" Mn2+-Pumpellyite: Mn2+ in X site...in Y site > 50 % (Togari & Akasaka, 1987) The pumpellyite group minerals are common in both the banded |
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Gambatesa Mine, Reppia, Ne, Genoa, Liguria, Italy