 | | Journal (article/letter/editorial) | | Creek (USA)] or re-evaluated [e.g. Oka (Canada); Fen (Norway); Panda Hill (Tanzania)] for their economic potential...review. To date, all major operating and former (Oka, Fen, Lueshe) Nb mines have been developed in primary...are typically considered as multi-commodity Nb–Ta–Y-REE deposits rather than single sources of niobium...Pekov, 2000) in the lujavrites of the Lovozero complex from which a concentrate with about 8 wt.% Nb2O5...Nb, due to the penchant for the element to form complex anions (NbO34 −; NbO76 −; Nb2O26 −) which cannot |  | Mikhailova, Julia A., Pakhomovsky, Yakov A., Konopleva, Natalia G., Kalashnikov, Andrey O., Yakovenchuk, Victor N. (2022) Fluorine Controls Mineral Assemblages of Alkaline Metasomatites. Minerals, 12 (9) 1076 doi:10.3390/min12091076 | Journal (article/letter/editorial) | | pioneering work on the rocks of the Fen complex in southern Norway [6]. He defined fenites as a suite...sourced from ijolite–melteigite magma within the complex. The term ‘fenite’ has since taken on a more general...Eudialyte, and Poikilitic complexes. The Layered complex comprises 77% of the massif volume [17], has a...contacts between the rhythms are sharp. The Eudialyte complex is located in the upper part of the Lovozero massif...18% of its volume [17]. The thickness of this complex is from 100 m (in the east) to 800 m (in the northwest) |  | | Book | | draining through Chhottanagpur Granite Gneiss Complex terrain in central and eastern India have been...tonnes of REO resource in Amba Dongar carbonatite complex, by taking average grade of 1.34% TREO. In the...REO. In northeast India, Samchampi carbonatite complex contains very low-grade Yttrium ore. The carbonatites...various dimensions associated with Siwana Ring Complex in western Rajasthan are potential for HREE. A...million tonne is speculated by AMD from Siwana ring complex. In southern India, peraluminous to peralkaline |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | and O, OH, F, and H20 Groups and Other Anions or Complex and Some Beryllosilicates 1020 1061 1106 1116...Mineralogisk-Geologisk Museum, University of Oslo, Oslo, Norway. Richard J. Reeder: Dept. of Earth Sciences, State...followed in this edition. The many and often very complex silicate minerals are here classified for the first...example, tritomite-(Ce) and tritomite-(Y) are end members [Ce+Y] in the tritomite series [AM 51:152(1966)]...nal order detectable by diffract at least a implies y generall here use fied exhibits external faces, but |  | | Book | | sulphides. Localities. Silver is found at Kongsberg, Norway, sometimes as fine, large speci¬ mens; at Freiberg...rocks. Localities. Found in Czechoslovakia and Norway; in Bolivia; in California and Colorado in the...Localities. Good quality specimens are found at Raade, Norway, at Blue Hill, Maine and in Colorado. There are...Carinthia, Austria; in Trentino, Italy; and in Norway and Sweden. The nickel-bearing variety is found...in sulphide deposits. Localities. From Sweden; Norway; Yellowknife, Northwest Territories; etc. Linnaeite |  | | Book | | purpose of improving communication over a very complex field. Most of the important current literature...atoms and how they combine to form spectacular and complex crystals is to miss contact with a fascinating...Si Ag Na Sr S Ta Te Tb Tl Th Tm Sn Ti W U V Xe Yb Y Zn Zr atomic number 60 10 28 41 7 76 8 46 15 78 19...rare gases neon, Valencies of some simple and complex ions cations valency 5+ P 3 4 13 THE CHEMISTRY...predominantly covalent way, forming what are known as complex ions or radicals. An example of this is the tetrahedral | | | Book | | cruciandus,20cidé ait Ena inlapidario fuo. mY Yj J y% Y4 Vj 4 Y4 pal een Above. A page from a late...with the purpose of improving field. over a very complex communication Most of the important current literature...atoms and how they combine to form spectacular and complex crystals is to miss contact with a fascinating...mapnesium oxide oxygen Valencies of some simple and complex ions cations valency 6+ P anions 4+ Si Sn...predominantly covalent way, forming what are known as complex ions or radicals. An example of this is the tetrahedral |  | | Book | | . . . . . . . . . . . . . . . . . . 115 Nikolay Y. Groshev and Bartosz T. Karykowski The Main Anorthosite...Suite of the Pechenga Structure on the Russian-Norway Border Zone with the Use of MHD Installation “Khibiny”...Silicocarbonatite, Seiland Igneous Province in Northern Norway: Prerequisites for Zeolite Deposits in Carbonatite...Mineralogical Mapping of the Kovdor Phoscorite–Carbonatite Complex, NW Russia: I. Forsterite Reprinted from: Minerals...Mineralogical Mapping of the Kovdor Phoscorite-Carbonatite Complex, NW Russia: II. Sulfides Reprinted from: Minerals |  | | Book | | 5 5.1 5.2 5.3 5.4 5.5 Sulfides, Arsenides and Complex Sulfides (Sulfosalts). . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . 102 Complex Metal Sulfides (Sulfosalts). . . . . . . . . ....between a1, a2 and a3. Examples: bastnäsite, (Ce,La,Y)CO3F, benitoite, BaTi[Si3O9]. 5 *622, hex.-trapezohedral:...metal alloys with dominantly metallic bonding. The complex interactions between the atomic nuclei and the...described by an index ellipsoid with the axes X, Y, Z, referred to as the optical indicatrix (in short: |
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