 | | Thesis/Dissertation | | content of beryllium-bearing minerals and micas from Tørdal pegmatites and its genetic and economic implications...to the Høydalen area and other pegmatite areas of the Tørdal pegmatite field for investigation and geological...of Tørdal pegmatite field, which are situated in the Vestfold and Telemark county in South Norway, have...17 Tørdal pegmatites in order to better understand the distribution of Sc and Be within pegmatite bodies...bodies as well as across the entire pegmatite field. The mineral chemistries were determined with EPMA |  | Novák, Milan, Cícha, Jaroslav, Čopjaková, Renata, Škoda, Radek, Vašinová Galiová, Michaela (2017) Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole carriers of Be from the magmatic to hydrothermal stage. European Journal of Mineralogy, 29 (4) 755-766 doi:10.1127/ejm/2017/0029-2652 | Journal (article/letter/editorial) | | Zdeněk Johan Milarite-group minerals from the NYF pegmatite Velká skála, Písek district, Czech Republic: sole...milarite-group minerals were distinguished in the NYF pegmatite Velká skála, Písek district, Czech Republic (Moldanubian...simply zoned (Kfs,Plg,Ab,Qz > Bt > Ap > Tur) pegmatite dike, ∼60 cm thick, is enclosed in durbachite...Milaritegroup minerals are the sole carriers of Be in the pegmatite, no relics or pseudomorphs after other Be-rich...durbachite suggest a NYF affinity of the Velká skála pegmatite as well as a close relation to euxenite-type pegmatites |  | | Journal (article/letter/editorial) | | Urals, Russia) and the Larvik alkalic complex, Norway, but nonetheless related to continental collision;...tourmaline (rubellite) from Manjaka, Sahatany Pegmatite Field, Antananarivo Province, Madagascar. Coin...Y2FeBe2(Si2O8)O2 [gadolinite(Y)], and Y2oBe2(Si2O8) (OH)2 [hingganite-(Y)]. Furthermore discussion of the status of...valid Be minerals. Pršek et al. (2010) reported a hingganite in which Nd is dominant among the rare earth...yttrium, which is potentially a new species, hingganite-(Nd). Hawthorne (2002) suggested that yttrian |  | | Journal (article/letter/editorial) | | CATION ORDER IN THE CRYSTAL STRUCTURE OF ‘Ca-HINGGANITE-(Y)’ MARK A. COOPER AND FRANK C. HAWTHORNE§...32, N-1650, Sellebakk, Norway ABSTRACT The crystal structure of ‘Ca-hingganite-(Y)’, triclinic P1, a...show the A-site cation ordering present in ‘Ca-hingganite-(Y)’. Ca and Y(Ln) are ordered over four A sites:...occupied by Si. The simplified formula for ‘Ca-hingganite-(Y)’ (Z ¼ 1) is A[(Y,Ln)Ca(Y,Ca,Ln)2]M(A,Fe)2Q(Be...Fe)2Q(Be,B,Si)4TSi4O16[(OH),O]4. Keywords: ‘Ca-hingganite-(Y)’, crystal structure, P1 symmetry, cation |  | | Journal (article/letter/editorial) | | 806 THE CANADIAN MINERALOGIST Cerite-(La) (La,Ce,Ca)9(Fe,Ca,Mg)(SiO4)3[SiO3(OH)]4(OH)3 T RIGONAL ...are: aegirine, anatase, ancylite-(Ce), barylite, catapleiite, cerite-(Ce), chabazite-Ca, edingtonite, fluorapatite...unidentified hexagonal prismatic mineral, possibly belovite-(Ce). Cerite-(La) occurs as framework-like aggregates...of cerite-(Ce). Name: Reflects its composition as the La-dominant analogue of cerite-(Ce). Comments:...KRIVOVICHEV, S.V. & B URNS , P.C. (2002): Cerite-(La), (La,Ce,Ca) 9 (Fe,Ca,Mg)(SiO 4 ) 3 [SiO 3 (OH)]4(OH)3, a |  | Gorelova, Liudmila, Vereshchagin, Oleg, Cuchet, Stéphane, Shilovskikh, Vladimir, Pankin, Dmitrii (2020) Low-Temperature Crystal Chemistry of Hingganite-(Y), from the Wanni Glacier, Switzerland. Minerals, 10 (4) 322 doi:10.3390/min10040322 | Journal (article/letter/editorial) | | Article Low-Temperature Crystal Chemistry of Hingganite-(Y), from the Wanni Glacier, Switzerland Liudmila...Published: 4 April 2020 Abstract: Hingganite from the Wanni glacier (Switzerland) was studied...investigated mineral should be considered as hingganite-(Y). It showed a relatively high content of Gd...single-crystal X-ray diffraction, it was shown that the hingganite-(Y) crystal structure was stable in the studied...temperature range and no phase transitions occurred. Hingganite-(Y) demonstrated low volumetric thermal expansion |  | | Journal (article/letter/editorial) | | 5a shows the sheet of tetrahedra in ferronordite-(Ce). As is apparent in the cross-section of a narrow...involving 4-connected tetrahedra (as in ferronordite-(Ce), it does occur in sheets with only 3-connected tetrahedra...coordinated by O2–6(OH)–2; the X site is vacant in hingganite minerals, and is occupied by Fe2+ in gadolinite...preliminary results suggest that (at least) some hingganite minerals have similar symmetry and cation order...ion that is [6]-coordinated by O2–6. In sazhinite-(Ce) and sazhinite-(La) (Fig. 21c), four-membered rings |  | | 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...= 99°37' Z = 4. Stable by <173°C, Abenakiite-(Ce) a26(Ce,Nd)c,[Ol(C?,,)61all argentite specimens are actually...celestine, fluorite, and jarlite in cryolite pegmatite at Ivigtut, Greenland. MR 24, 36, 1993. Adamite...tennination, also radiating fibrous aggregates ore ce yellow-!!reen underSWand LWUV light. Adamiteformedby |
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