 | Oberti, Roberta, Ventura, Giancarlo Della, Ottolini, Luisa, Hawthorne, Frank C., Bonazzi, Paola (2002) Re-definition, nomenclature and crystal-chemistry of the hellandite group. American Mineralogist, 87 (5) 745-752 doi:10.2138/am-2002-5-618 | Journal (article/letter/editorial) | | Cristallografia (CSCC), via Ferrata 1, I-27100 Pavia, Italy Dipartimento di Scienze della Terra, Università...della Calabria, I-87030 Arcavacata di Rende (CS), Italy 3 Department of Geological Sciences, University...Terra, Università di Firenze, I-50121 Firenze, Italy ABSTRACT Detailed X-ray single-crystal structure...samples of hellandite recently found in Latium (Italy), together with a critical re-evaluation of the...Merlino (1977) for a Y-rich sample from Predazzo (Italy), a new tetrahedrally coordinated site has been |  | | Catalog/List | | inn. colourful Halite MINERALS 047 BASTNAESITE Ce La CO/3 F Rich distribution of tiny brown grains...on rock £2.50 (Rudabanya Hungary) 248 GADOLINITE (Ce La Nd Y) Fe Be Silicate.2mm to 3mm brown crystal...Norway) lxl to lx 54 only 1 crystal £4 229 MELANOCERITE Ce Ca Si OH F Two or three brown 3mm areas in 2cm matrix...(Imiter Morocco) half x half ins £3.50 407 TADZHIKITE Ce Ca (Ce Nd La) (Ti Al Fe) B SiO vitreous brownish...micro plates on Sandine (arrowed).(le Tre Croci Vetralla Italy) Ixlins £4.50 396 TORBERNITE Cu UO PO/4 |  | | 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)...Helium Holmium Al Sb A As Ba Be Bi B Br Cd Ca C Ce Cs Cl Cr Co Cu Dy Er Eu F Gd Ga Ge Au Hf He Ho Hydrogen |  | | Book (volume) | | unambiguous. For example, carbokentbrooksite (Na,□)12(Na,Ce)3Ca6Mn2+3 Zr3Nb(Si25O73)(OH)3(CO3)·2H2O can be classified...Ca2B4O4(OH)7Cl·7H2O Locality: Salar de Carcote deposit, El Loa province, Antofagasta, Chile. Description: Colourless crystal...borax deposit, Salar del Hombre Muerto, Salta province, Argentina (type locality). Description: Colourless...District, Vakinankaratra Region, Antananarivo Province, Madagascar. Description: Grey grains from the...borax deposit, Salar del Hombre Muerto, Salta Province, Argentina. Description: Colourless crystal. Identified |  | | Book (edition) | | Prague Printedin Czech Republicby Finidr.u.o .. Ce,ky Te~in 14/02/03/0 I All rights reserved•• ·o pan...dominant rareearth element (REE). e.g. monazite-(Ce), monazite(Nd), etc. In a few cases a similar procedure...expressed in abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture)...the revolution in 1997. Its mineral rich Katanga province was renamed Shaba by Mobutu, and is now the Katanga...Katanga administrative region again. The former Kivu province is now divided to three regions: INTRODUCTION |  | | Book | | (Si3.60Al0.40O10)(OH)2 from Dora Maira massif, Italy; at 3515 and 3552 cm−1 (CrR3+□ and MgCr□, respectively)...32) of holotype tsilaisite from island of Elba, Italy, containing [Mn2+1.34Al1.14 Li0.54Ti0.04] at the...spectra of cordierite from Allumiere, Latium, Italy have been assigned to C = O-stretching vibrations...absorption spectra of cordierite from Allumiere, Latium, Italy in the region of C = O-stretching vibrations collected...·2H2O from Monte Cavalluccio, Sacrofano, Rome, Italy show a sharp band at 2351 cm−1 having maximum absorption |
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Tre Croci, Vetralla, Viterbo Province, Lazio, Italy