 | | Journal (article/letter/editorial) | | Pannonian Basin; pyrochlore; xenolith 1. Introduction Niobium belongs to the group of incompatible high-field-strength...minerals (Fe–Ti oxides, zircon, thorite, and pyrochlore) in the granite xenoliths from Čamovce have...challenging task due to multiple interferences within the group of high-field-strength elements. A CAMECA SX-100...SX-100 electron probe interferences within the group of high-field-strength elements. A CAMECA SX-100 electron...Ca3. (c) Complex domain zoning of pyrochlore and fergusonite pyrochlore and fergusonite caused by variable |  | Gonçalves, , Melgarejo, , Alfonso, , Amores, , Paniagua, , Neto, , Morais, , Camprubí, (2019) The Distribution of Rare Metals in the LCT Pegmatites from the Giraúl Field, Angola. Minerals, 9 (10) 580 doi:10.3390/min9100580 | Journal (article/letter/editorial) | | Abstract: The Giraúl granitic pegmatite field in Angola is composed of five pegmatite types, the most evolved...the evolution of the pegmatites and within each pegmatite body from border to inner zones, and especially...and Bi. Keywords: pegmatites; columbite-group minerals; pyrochlore supergroup; niobium; tantalum; beryllium;...minerals is quite characteristic in granites and pegmatite rocks and gives us information about their petrogenesis...processes [12,13]. However, in the late processes of pegmatite evolution, such as those that form albitites, |  | Atencio, D., Andrade, M. B., Christy, A. G., Giere, R., Kartashov, P. M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48 (3) 673-698 doi:10.3749/canmin.48.3.673 | Journal (article/letter/editorial) | | 673-698 (2010) DOI : 10.3749/canmin.48.3.673 THE PYROCHLORE SUPERGROUP OF MINERALS: NOMENCLATURE Daniel ATENCIO§...Abstract A new scheme of nomenclature for the pyrochlore supergroup, approved by the CNMNC–IMA, is based...referred to until now as the pyrochlore group should be referred to as the pyrochlore supergroup, and the subgroups...Ta, Sb, Ti, and W. The recommended groups are pyrochlore, microlite, roméite, betafite, and elsmoreite...and one root name (identical to the name of the group). The first prefix refers to the dominant anion |  | | Book | | minerals fit into chemical groups, and for each group a few minerals are selected to illustrate their...silicate mineral, tho rite (ThSiO4 ), found in a pegmatite on an island in Langesund Fjord, southern Norway...either as separate accessory minerals in the same pegmatite or as substitutional solid solution species in...carnotite and tyuyamunite, followed by autunite-group phosphates and arsenates, and silicates, particularly...uranothorite, thorianite, euxenite, thorite, pyrochlore, chevkinite, fluorite, bastnaesite, and davidite |  | | Book (edition) | | supergroup (Pasero et al., EJM 22, 163-179, 2010), pyrochlore supergroup (Atencio et al., CM 48, 673-698, 2010)...expensive analyses (especially amphibole and pyrochlore supergroups). In the case of light elements,...Al;[(OH) 4 IPO;(OH)l(PO4))'4Hi0 (8.D, turquoise group). Triclinic, PT, a,b,c = 7.39, 7.72, ll.34,a,p,y=99°46'...luster vitreous, streak white. Cleav- (8.D, mixite group). Hexagonal, P6/111, a,c = 13.55, age {001} perfect...Czech Rep. Ahrensite Fe2SiO4 (9.A, ringwoodite group). Cubic, FdJm, a= 8.16. d: 2.46(10) - 1.245(8) - |  | | Book | | Author: ( ·u/lector .,· c;uide 10 the A,nphibole Group, 978-0-7643-4870-9 /11t1Dductio11 to Rudioocth•e...Guide lo the Zeolite Group. 978-0-7643-4675-0 Colll:'ctor} G11ide to the Feldspar Group, 978-0-7643-4329-2...dendritic uraninite altering to orange gummite in pegmatite,from the Ruggles 111ine. New Hampshire. The activity...carnotite and tyuyan1unite, followed by autun ite-group phosphates and arsenates, and silicates, pariicularly...su Ifates, carbonates, men1bers ofthe autunite group, and various uranyl silicates. In vanadiferous ores |  | | Book (edition) | | to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System...) 6-21 %. VHN(synth.) (10.C. purine-porphyrine group). a nickel porphyrine. With quartz. rutile, piemontite |
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