2 edition of Ixiolite--A Columbite Substructure. found in the catalog.
Ixiolite--A Columbite Substructure.
Canada. Dept. of Mines and Technical Surveys. Mines Branch.
|Series||Canada Mines Branch Research Report -- 124|
|Contributions||Nickel, E.H., Rowland, J.F., Mcadam, R.C.|
Tl-Ag -bearing rouxelite from Monte Arsiccio mine: occurrence and crystal chemistry. A series of late Ta-rich minerals from Kola Peninsula was described during the past 4 years by Voloshin et at. However, some of these are also found in, and a few are characteristic of, anorogenic alkaline igneous sequences from carbonatites and gabbros to nepheline syenites and alkaline granites. This process is experimental and the keywords may be updated as the learning algorithm improves.
Anns mine, Karoi District, Zimbabwe. Gaines showed at least seven different phases, but no ashanite E. Journal of the Mineralogical Society of Japan 6, Krivovichev Unique thallium mineralization in the fumaroles of Tolbachik volcano, Kamchatka Peninsula, Russia. Kampf, A. The columbites-tantalites examined so far exhibit a wide range of order-disorder, and they confirm the opinions of Giese and Sa-hama that disordered phases may be widespread in this group Figure 1A.
Its unit cell a — 9. Kampf A review of the structural architecture of tellurium oxycompounds. Polyakov and Cherepivskaya provided a detailed description of what seems to be a monoclinic ixiolite. It has the ixiolite-type cell in natural state but its behaviour on heating is not known.
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The range of the totals is 1. PopoviteCu5O2 AsO4 2. Belakovskiy, Evgeny G. Figure 4A shows the bulk compositions of niobian and tantalian rutiles based on the data collected by Cerny et al. PharmazinciteKZnAsO4. Markhininite, TlBi SO4 2. Meerschautite, Ag,Cu 5. Min Mag — Google Scholar Maksimyuk IE, Lebedeva SI A study of physical properties of cassiterite aimed at clarification of the mode of tantalum and niobium incorporation.
Otherwise, the data indicate an almost uniform distribution of all degrees of order except the more or less completely ordered state close to the synthetic phases. In contrast, Ta-dominant compositions are homogeneous.
Studies on the basic arsenates of manganese: retzian, hemafibrite, synadelphite, arsenoclasite, arseniopleite, and akrochordite.
Siidra, Oleg I. Mineralogical Magazine, 80 6 American Mineralogist 49, L.
Structurally, all specimens examined to date have monorutile unit cells. Tantite, Ta Voloshin et al. European Journal of Mineralogy, 30, List of IMA numbers of other special procedures[ edit ] Property: main subject mineralogy Beginnings: Hey M H, Gottardi G, On the use of names, prefixes and suffixes, and adjectival modifiers in the mineralogical nomenclature.
Exceptions to this behaviour are very rare. Voloshin et al. Moreau and Tramasurerun No. Coulsonite: A.
They also recognized the influence of Nb, Ti and Mn substitutions on the unit cell dimensions. Organova, Nikolay V. In: Lebedeva SI ed Physical properties of rare-element minerals and methods of their examination.
However, some analyses obtained by Lahti et al. Its structure and complex, chemical composition, essentially an Al,Ta,Nb,Sb -borosilicate, are related to those of dumortierite. However, a re-examination of this relationship is desirable.
Lithiotantite, Li Ta,NbVoloshin et al. McGee, and George E.This paper describes riesite, a new high-pressure polymorph of TiO2 from the Ries impact structure, Germany.
Riesite occurs in shock-induced melt veins within xenoliths of bedrock in suevite. It is structurally closely related to srilankite from which it differs by having two distinct cation sites rather than one and through its monoclinic symmetry. It is indicative that riesite forms only Author: Oliver Tschauner, Chi Ma, Antonio Lanzirotti, Matthew G.
Newville. On a procédé à l'examen des données existantes sur la composition chimique et les propriétés structurales de columbite-tantalite, ferrotapiolite-manganotapiolite, ixiolite, wodginite, rutile tantalifère et niobifère, cassitérite niobo-tantalifère, et du groupe de pyrochlore.
La compréhension de la cristallochimie de certaines de ces espèces apparaît quelque peu atlasbowling.com by: Niobian wolframite is chemically an intermediate between wolframite and an iron-manganese niobate of the type FeNbO atlasbowling.com crystal X-ray photographs indicate systematic extinctions consistent with the monoclinic wolfaamite space group P2/c.
a 0 =, b 0 =, c 0 =, β=90°. The mineral is opaque, in colour dark grey to almost atlasbowling.com by: 4. Рекомендованный список диссертаций по специальности «Физическая химия», шифр ВАК. Физико-химические свойства и процессы в оксидных и металлических системах, содержащих тантал, ниобий, олово год, доктор.
Nickel E H, Rowland J F, McAdam R C () Ixiolite - a columbite substructure, American Mineralogist 48, ; IMA s.p.: Jambor J L, Traill R J () On rozenite and siderotil, The Canadian Mineralogist 7, ; Kato T () New data on the so-called bementite.
Journal of the Mineralogical Society of Japan 6, Ixiolite (Ta,Nb,Sn,Fe,Mn)O2 c Mineral Data Publishing, version 1 Crystal Data: Monoclinic, pseudo-orthorhombic. Point Group: 2/m. As crudely prismatic .