DOCSLIB.ORG

New Mineral Names*

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
New Mineral Names* American Mineralogist, Volume 90, pages 768–773, 2005 New Mineral Names* PAULA C. PIILONEN,1,† T. SCOTT ERCIT,1,‡ AND ANDREW C. ROBERTS2 1Research Division, Canadian Museum of Nature, P.O. Box 3443, Stn. D, Ottawa, Ontario K1P 6P4, Canada 2Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada ANKINOVICHITE 17.8098(8), b = 5.1228(2), c = 8.8665(4) Å, β = 92.141(1)°, V 3 3 3 Karpenko, V.Yu., Pautov, L.A., Sokolova, E.V., Hawthorne, F.G., = 808.4(2) Å , Z = 2, Dobs = 2.48(2) g/cm , Dcalc = 2.476 g/cm . Agakhanov, A.A., Dikaya, T.V., Bekenova, G.K. (2004) Anki- The strongest lines on the powder X-ray diffraction pattern (FeKα radiation, 34 lines) are 8.89(100,200), 7.83(100,101), novichite, the nickel analogue of alvanite, a new mineral from – 5.01(30,301), 4.91(20,110), 3.354(40,012), 3.266(50,501), Kurumsak (Kazakhstan) and Kara-Chagyr (Krygyzstan). Za- – – 2.944(30, 312), 2.631(20,412), 2.463(20,701,220), 2.378(30, piski Vseross. Mineral. Obshch. 133(2), 59–70 (in Russian, – – – 313,221), 2.323(30,313), 1.970(80,613,422), 1.935(20,023), English abstract). – 1.904(70,621), 1.680(40,820), 1.605(50,623), 1.539(30,804,332). Ankinovichite is described from two localities—Kurumsak, The mineral is isostructural with alvanite and is its Ni analogue. Chminken Oblysy, Kazakhstan, and Mount Kara-Chagyr, Osh The high R1 value is thought to be due to twinning, although Oblast, Krygyzstan). The material from Kurumsak occurs as the reÞ ned site occupancies match well with those obtained by crusts of prismatic, pale green, elongate crystals up to 0.5 electron microprobe analyses. Ankinovichite is only the second mm. The material from Mount Kara-Chagyr occurs as green mineral known to have chains of V tetrahedra. to light blue, tabular, commonly elongate crystals 0.05 to 0.2 Ankinovichite was found in the vanadium-bearing schists mm in length. The crystals often occur in aggregates, and are of the Kara-Tau range, south Kazakhstan. It is a low-tempera- commonly twinned. Ankinovichite is brittle, with perfect (010) ture hydrothermal or supergene mineral, forming after earlier cleavage, Mohs hardness 2.5 to 3, microindentation hardness sphalerite, tetrahedrite, sulvanite, patronite, and breithauptite. VHN 68 kg/mm2. The mineral is transparent and vitreous. At Kurumsak, ankinovichite was found in a dump at a bore pit Electron microprobe analyses (Kara-Chagyr/Kurumsak) gave within a middle Cambrian schist rich in carbonaceous material and clay and interbedded with dolomites. It is associated with Al2O3 33.82/33.79, SiO2 0.59/0.67, V2O5 28.41/27.98, FeO volborthite, carnotite, goethite and an unknown dark orange V 0.14/0.35, NiO 8.43/7.19, CuO 0.27/0.20, ZnO 2.24/4.20, H2O 23.30 (PenÞ eld method)/25.65(by difference), sum 97.20/100.00 oxide. Ankinovichite at Kara-Chagyra (Isfayramsay River, Osh Oblastʼ) occurs in fractures and as a cement in schist fragments wt%, corresponding to (Ni0.68Zn0.17Cu0.02Fe0.01)Σ0.88Al4(VO3)1.88Si0.06 (early Paleozoic) found within a serpentinite matrix, part of (OH)12.12(H2O)2.67 for material from Kara-Chagyr and (Ni0.58Zn0.31 the early Carboniferous Fergana complex. It is associated with Cu0.02Fe0.03)Σ0.94Al4(VO3)1.85Si0.06(OH)12.27(H2O)2.46 for material allophone, kolovratite, volborthite, nickelalumite, metatyuy- from Kurumsak. The simpliÞ ed general formula is (Ni,Zn)Al4 amunite, roscoelite and tangeite. Ankinovichite was named for (VO3)2(OH)12·2H2O based on 4 Al atoms pfu. The IR spectrum of ankinovichite contains bands at 3570, 3460, and 3175, 1735, Ekaterina Aleksandrovna Ankinovich (1911–1991) and Stepane and 1620 cm–1, as well as less intense bands in the range from Gerasimoviche Ankinovich (1912–1985), a well-known miner- 1025 to 465 cm–1. Neither a discussion of the IR spectrum nor alogist and geologist, respectively. The type material has been identiÞ cation of the absorption bands is given. It is biaxial nega- deposited at the A.E. Fersman Mineralogical Museum, Russian Academy of Science, Moscow, Russia (catalogue no. 6798). tive, α = 1.653(2) β = 1.677(2), γ = 1.706(3), 2Vobs-86(2)°, 2Vcalc- 86°. Ankinovichite has parallel extinction, positive elongation, is P.C.P./T.S.E. non-pleochroic and non-ß uorescent under UV radiation. Discussion. The authors state that they succeeded in locat- The crystal structure of ankinovichite was reÞ ned on a 0.06 ing two hydrogen atoms of the H2O group although this seems × 0.004 × 0.006 mm crystal by single-crystal X-ray diffraction unlikely given the poor quality of the Þ nal reÞ nement. methods, R1 = 0.128 for 1143 reß ections with I > 4σ(I). Start- ing parameters were taken from alvanite (Dunn et al. 1990; BARI-OLGITE* Mineral. Mag. 54, 609–611; Pertlik et al. 1990; Neues Jahrb. Mineral. Mh. 385–392). The mineral is monoclinic, P21/n, a = Pekov, I.V., Chukanov, N.V., Kulikova, I.M., Zubkova, N.V., Krotova, O.D., Sorokina, N.I., Pushcharovsky, D.S. (2004) A new mineral, bari-olgite Ba(Na,Sr,REE)2Na[PO4]2, and its crystal structure. Zapiski Vseross. Mineral. Obshch. 133(1), * Before publication, minerals marked with an asterisk were approved by the Commission on New Minerals and Mineral 41–49 (in Russian, English abstract). Names, International Mineralogical Association. † E-mail: [email protected] Bari-olgite occurs as irregular, isometric or ß attened crys- ‡ English translations of the articles are available upon request tals, sometimes with a hexagonal outline, up to 1.5 × 1.0 cm. (E-mail: [email protected]) The crystals are transparent, light green, with a white streak 0003-004X/05/0004–768$05.00/DOI: 10.2138/am.2005.432 768 PIILONEN ET AL.: NEW MINERAL NAMES 769 and a vitreous luster. The dominat forms are trigonal prisms accurate than the WDS results, based on similar results for bast- – – – [{100}, {100}] and trigonal pyramids [{101}, {101}, {101}, nåsite analyzed under the same conditions. A proposed general – – 3+ 4+ and {101}]. They often resemble quartz crystals. It ß uoresces formula for the natural mineral is La(1-y)[Ce (y-x)Ce x]O(1+x)F(1-x). bright pink-orange in short-wave and weak pink-red in long-wave The density could not be determined but was calculated to be 6.5 2 UV radiation. Bari-olgite is brittle, has uneven fracture, a Mohs g/cm . The mineral is expected to be isotropic, ncalc ≈ 1.9. A single hardness of 4 to 4.5, and imperfect (00l) and (hk0) cleavage. crystal structure determination was not possible and therefore Electron microprobe analyses gave Na2O 14.78, K2O 0.87, CaO the Rietveld method was employed. The strongest lines on the 0.32, SrO 16.57, BaO 31.17, MnO 0.39, La2O3 2.41, Ce2O3 1.90, X-ray diffraction pattern [Guinier-Hägg camera, (40.16 mm, d- Pr2O3 0.10, Nd2O3 0.16, SiO2 0.08, P2O5 31.77, sum 100.52 wt%, spacings), diffractometer (intensities), CuKα, 17 lines given] are corresponding to (Na2.14K0.08Ca0.03Mn0.02Sr0.72Ba0.91La0.07Ce0.05)Σ4.02 3.252(100,111), 2.815(31,200), 1.991(61,220), 1.6969(46,311), P2.01O8 based on 8 oxygen atoms pfu. The simpliÞ ed general 1.2916(331), 1.1486(12,422). A Rietveld reÞ nement of the pow- 2 formula is Ba(Na,Sr,REE)2Na[PO4]2. The IR spectrum of bari- der X-ray diffraction data was performed (RF = 0.051, χ = 0.86, olgite is simple, containing only three absorption bands in the 12 reÞ ned parameters). Results indicate håleniusite-(La) to be region 400–1200 cm–1: 1035, 946, and 563 cm–1. The mineral cubic, Fm3m, a = 5.6282(5) Å, V = 178.28(5) Å3, and Z = 4. The is uniaxial negative, ε = 1.623(3), ω = 1.628(2). It is colorless mineral is isostructural with ß uorite. and non-pleochroic. Håleniusite-(La) was found on the dumps of the Bastnäs The crystal structure of the mineral was reÞ ned by single-crystal Cu-REE mines in Våstmanland, Sweden. It is associated with X-ray diffraction methods, R1 = 0.038 for 601 reß ections with I bastnåsite-(Ce), brochanite, ferriallanite-(Ce), and quartz. Ad- > 4σ(I). The mineral is trigonal, P3, a = 5.541(2), c = 7.020(3) ditional minerals in the dumps include cerite-(Ce), molybdenite, 3 3 3 Å, V = 186.6 Å , Z = 1, Dobs = 3.986 g/cm , Dcalc = 4.000 g/cm , µ and an amphibole. The mineral is a secondary alteration product = 9.995 mm–1. Starting parameters for the reÞ nement were taken of bastnåsite-(La) via a decarbonation reaction. The name of the from those of olgite (Sokolova et al. 1990; Vestnik MGU Ser.4, mineral is for Ulf Hålenius, Professor of Mineralogy, Swedish Geologiya, 1, 87–91). The strongest lines of the powder X-ray dif- Museum of Natural History. The type material has been deposited fraction pattern (diffractometer, CoKα, 25 lines) are 7.044(22,001), at the Swedish Museum of Natural History, Stockholm, Sweden 3.964(60,101,011), 2.839(100,012), 2.774(100,110), 2.344(20,003), (catalogue no. 20030025). – 2.272(19,021), 1.984(40,202), 1.611(26,212,122), 1.387(19,220).
Load more

Recommended publications
  • Mineral Processing
    Mineral Processing Foundations of theory and practice of minerallurgy 1st English edition JAN DRZYMALA, C. Eng., Ph.D., D.Sc. Member of the Polish Mineral Processing Society Wroclaw University of Technology 2007 Translation: J. Drzymala, A. Swatek Reviewer: A. Luszczkiewicz Published as supplied by the author ©Copyright by Jan Drzymala, Wroclaw 2007 Computer typesetting: Danuta Szyszka Cover design: Danuta Szyszka Cover photo: Sebastian Bożek Oficyna Wydawnicza Politechniki Wrocławskiej Wybrzeze Wyspianskiego 27 50-370 Wroclaw Any part of this publication can be used in any form by any means provided that the usage is acknowledged by the citation: Drzymala, J., Mineral Processing, Foundations of theory and practice of minerallurgy, Oficyna Wydawnicza PWr., 2007, www.ig.pwr.wroc.pl/minproc ISBN 978-83-7493-362-9 Contents Introduction ....................................................................................................................9 Part I Introduction to mineral processing .....................................................................13 1. From the Big Bang to mineral processing................................................................14 1.1. The formation of matter ...................................................................................14 1.2. Elementary particles.........................................................................................16 1.3. Molecules .........................................................................................................18 1.4. Solids................................................................................................................19
    [Show full text]
  • Cafetite, Ca[Ti2o5](H2O): Crystal Structure and Revision of Chemical Formula
    American Mineralogist, Volume 88, pages 424–429, 2003 Cafetite, Ca[Ti2O5](H2O): Crystal structure and revision of chemical formula SERGEY V. K RIVOVICHEV,1,* VICTOR N. YAKOVENCHUK,2 PETER C. BURNS,3 YAKOV A. PAKHOMOVSKY,2 AND YURY P. MENSHIKOV2 1Department of Crystallography, St. Petersburg State University, University Embankment 7/9, St. Petersburg 199034, Russia 2Geological Institute, Kola Science Centre, Russian Academy of Sciences, Fersmana 14, 184200-RU Apatity, Russia 3Department of Civil Engineering and Geological Sciences, University of Notre Dame, Notre Dame, Indiana 46556-0767, U.S.A. ABSTRACT The crystal structure of cafetite, ideally Ca[Ti2O5](H2O), (monoclinic, P21/n, a = 4.9436(15), b = 12.109(4), c = 15.911(5) Å, b = 98.937(5)∞, V = 940.9(5) Å3, Z = 8) has been solved by direct methods and refined to R1 = 0.057 using X-ray diffraction data collected from a crystal pseudo-merohedrally twinned on (001). There are four symmetrically independent Ti cations; each is octahedrally coordi- nated by six O atoms. The coordination polyhedra around the Ti cations are strongly distorted with individual Ti-O bond lengths ranging from 1.743 to 2.223 Å (the average <Ti-O> bond length is 1.98 Å). Two symmetrically independent Ca cations are coordinated by six and eight anions for Ca1 and Ca2, respectively. The structure is based on [Ti2O5] sheets of TiO6 octahedra parallel to (001). The Ca atoms and H2O groups are located between the sheets and link them into a three-dimensional struc- ture. The structural formula of cafetite confirmed by electron microprobe analysis is Ca[Ti2O5](H2O), .
    [Show full text]
  • New Minerals Approved Bythe Ima Commission on New
    NEW MINERALS APPROVED BY THE IMA COMMISSION ON NEW MINERALS AND MINERAL NAMES ALLABOGDANITE, (Fe,Ni)l Allabogdanite, a mineral dimorphous with barringerite, was discovered in the Onello iron meteorite (Ni-rich ataxite) found in 1997 in the alluvium of the Bol'shoy Dolguchan River, a tributary of the Onello River, Aldan River basin, South Yakutia (Republic of Sakha- Yakutia), Russia. The mineral occurs as light straw-yellow, with strong metallic luster, lamellar crystals up to 0.0 I x 0.1 x 0.4 rnrn, typically twinned, in plessite. Associated minerals are nickel phosphide, schreibersite, awaruite and graphite (Britvin e.a., 2002b). Name: in honour of Alia Nikolaevna BOG DAN OVA (1947-2004), Russian crys- tallographer, for her contribution to the study of new minerals; Geological Institute of Kola Science Center of Russian Academy of Sciences, Apatity. fMA No.: 2000-038. TS: PU 1/18632. ALLOCHALCOSELITE, Cu+Cu~+PbOZ(Se03)P5 Allochalcoselite was found in the fumarole products of the Second cinder cone, Northern Breakthrought of the Tolbachik Main Fracture Eruption (1975-1976), Tolbachik Volcano, Kamchatka, Russia. It occurs as transparent dark brown pris- matic crystals up to 0.1 mm long. Associated minerals are cotunnite, sofiite, ilin- skite, georgbokiite and burn site (Vergasova e.a., 2005). Name: for the chemical composition: presence of selenium and different oxidation states of copper, from the Greek aA.Ao~(different) and xaAxo~ (copper). fMA No.: 2004-025. TS: no reliable information. ALSAKHAROVITE-Zn, NaSrKZn(Ti,Nb)JSi401ZJz(0,OH)4·7HzO photo 1 Labuntsovite group Alsakharovite-Zn was discovered in the Pegmatite #45, Lepkhe-Nel'm MI.
    [Show full text]
  • Delindeite and Lourenswalsite, Two New Titanosilicates from the Magnet Cove Region, Arkansas
    Delindeite and lourenswalsite, two new titanosilicates from the Magnet Cove region, Arkansas DANIEL E. ApPLEMAN Department of Mineral Sciences, Smithsonian Institution, Washington, D.C. 20560, USA AND How ARD T. EVANS, JR., GORDON L. NORD, EDWARD J. DWORNIK AND CHARLES MIL TON U.S. Geological Survey, Reston, Virginia 22092, USA Abstract Delindeite and lourenswalsite are two new barium titanosilicate minerals found as microscopic crystals in miarolitic cavities in nepheline syenite in the Diamond Jo quarry, Hot Spring County, Arkansas. Delindeite is found as aggregates of flake-like crystallites in compact spherules, light pinkish grey in colour, with a resinous, pearly lustre. The flakes are biaxial positivewith average n ~ 1.813;the measured density is 3.3 g/cm3. Electron diffraction revealed a monoclinic unit cell in space group C2/m or subgroup, with a = 21.617(13), b = 6.816(5), c = 5.383(3) A, P = 94.03(5t(refined from X-ray powder data). The strongest X-ray lines are (hkl, dobs,!re'):(200,10.80,100); (311,3.54,24); (601,3.083,28); (601, 2.888, 31);(221, 2.806, 20); (910, 2.262,18). The crystals are submicroscopically twinned on (100) and also produce additional continuous diffraction streaks parallel to a*, which double the band c axes. The formula derived from electron and ion probe analyses (H20 by difference), as constrained by density and molar volume data, is approximately (Na,Kb.7(Ba,Ca)4(Ti,Fe,AI)6Sig026(OH)14' with Na> K, Ba »Ca, Ti» Fe,AI; Z = 1. Lourenswalsite occurs as very thin hexagonal plates in rosettes, silver grey to light brownish grey in colour.
    [Show full text]
  • STRONG and WEAK INTERLAYER INTERACTIONS of TWO-DIMENSIONAL MATERIALS and THEIR ASSEMBLIES Tyler William Farnsworth a Dissertati
    STRONG AND WEAK INTERLAYER INTERACTIONS OF TWO-DIMENSIONAL MATERIALS AND THEIR ASSEMBLIES Tyler William Farnsworth A dissertation submitted to the faculty at the University of North Carolina at Chapel Hill in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Chemistry. Chapel Hill 2018 Approved by: Scott C. Warren James F. Cahoon Wei You Joanna M. Atkin Matthew K. Brennaman © 2018 Tyler William Farnsworth ALL RIGHTS RESERVED ii ABSTRACT Tyler William Farnsworth: Strong and weak interlayer interactions of two-dimensional materials and their assemblies (Under the direction of Scott C. Warren) The ability to control the properties of a macroscopic material through systematic modification of its component parts is a central theme in materials science. This concept is exemplified by the assembly of quantum dots into 3D solids, but the application of similar design principles to other quantum-confined systems, namely 2D materials, remains largely unexplored. Here I demonstrate that solution-processed 2D semiconductors retain their quantum-confined properties even when assembled into electrically conductive, thick films. Structural investigations show how this behavior is caused by turbostratic disorder and interlayer adsorbates, which weaken interlayer interactions and allow access to a quantum- confined but electronically coupled state. I generalize these findings to use a variety of 2D building blocks to create electrically conductive 3D solids with virtually any band gap. I next introduce a strategy for discovering new 2D materials. Previous efforts to identify novel 2D materials were limited to van der Waals layered materials, but I demonstrate that layered crystals with strong interlayer interactions can be exfoliated into few-layer or monolayer materials.
    [Show full text]
  • Applied Geminography - Symmetry Analysis of Twinned Crystals and Definition of Twinning by Reticular Polyholohedry Massimo Nespolo, Giovanni Ferraris
    Applied geminography - symmetry analysis of twinned crystals and definition of twinning by reticular polyholohedry Massimo Nespolo, Giovanni Ferraris To cite this version: Massimo Nespolo, Giovanni Ferraris. Applied geminography - symmetry analysis of twinned crystals and definition of twinning by reticular polyholohedry. Acta Crystallographica Sec- tion A Foundations and Advances, International Union of Crystallography, 2004, 60, pp.89-95. 10.1107/S0108767303025625. hal-00130548 HAL Id: hal-00130548 https://hal.archives-ouvertes.fr/hal-00130548 Submitted on 12 Feb 2007 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. electronic reprint Acta Crystallographica Section A Foundations of Crystallography ISSN 0108-7673 Editor: D. Schwarzenbach Applied geminography – symmetry analysis of twinned crystals and definition of twinning by reticular polyholohedry Massimo Nespolo and Giovanni Ferraris Copyright © International Union of Crystallography Author(s) of this paper may load this reprint on their own web site provided that this cover page is retained.
    [Show full text]
  • Shin-Skinner January 2018 Edition
    Page 1 The Shin-Skinner News Vol 57, No 1; January 2018 Che-Hanna Rock & Mineral Club, Inc. P.O. Box 142, Sayre PA 18840-0142 PURPOSE: The club was organized in 1962 in Sayre, PA OFFICERS to assemble for the purpose of studying and collecting rock, President: Bob McGuire [email protected] mineral, fossil, and shell specimens, and to develop skills in Vice-Pres: Ted Rieth [email protected] the lapidary arts. We are members of the Eastern Acting Secretary: JoAnn McGuire [email protected] Federation of Mineralogical & Lapidary Societies (EFMLS) Treasurer & member chair: Trish Benish and the American Federation of Mineralogical Societies [email protected] (AFMS). Immed. Past Pres. Inga Wells [email protected] DUES are payable to the treasurer BY January 1st of each year. After that date membership will be terminated. Make BOARD meetings are held at 6PM on odd-numbered checks payable to Che-Hanna Rock & Mineral Club, Inc. as months unless special meetings are called by the follows: $12.00 for Family; $8.00 for Subscribing Patron; president. $8.00 for Individual and Junior members (under age 17) not BOARD MEMBERS: covered by a family membership. Bruce Benish, Jeff Benish, Mary Walter MEETINGS are held at the Sayre High School (on Lockhart APPOINTED Street) at 7:00 PM in the cafeteria, the 2nd Wednesday Programs: Ted Rieth [email protected] each month, except JUNE, JULY, AUGUST, and Publicity: Hazel Remaley 570-888-7544 DECEMBER. Those meetings and events (and any [email protected] changes) will be announced in this newsletter, with location Editor: David Dick and schedule, as well as on our website [email protected] chehannarocks.com.
    [Show full text]
  • Styles of Alteration of Ti Oxydes of the Kimberlite Groundmass: Implications on the Petrogenesis and Classification of Kimberlites and Similar Rocks
    11th International Kimberlite Conference Extended Abstract No. 11IKC-4629, 2017 Styles of alteration of Ti oxydes of the kimberlite groundmass: implications on the petrogenesis and classification of kimberlites and similar rocks Jingyao Xu1, Joan Carles Melgarejo2, Montgarri Castillo-Oliver3 1 Departament de Mineralogia, Petrologia i Geologia Aplicada, Facultat de Ciències de la Terra, Universitat de Barcelona, Barcelona, Spain, [email protected] 2 Departament de Mineralogia, Petrologia i Geologia Aplicada, Facultat de Ciències de la Terra, Universitat de Barcelona, Barcelona, Spain, [email protected] 3 ARC Centre of Excellence for Core to Crust Fluid Systems and GEMOC, Department of Earth and Planetary Sciences, Macquarie University, NSW, Australia, [email protected] Introduction Ti-minerals as ilmenite, spinels and perovskite are diamond indicator minerals and are important carriers of petrogenetic information. However, in many cases these minerals suffer complex alteration processes during the hydrothermal or supergene late stages of the kimberlite crystallization sequence. Altered kimberlites occur in the Bastar craton (central India) and the Eastern Dharwar craton (EDC, Southern India) in India. Kimberlite pipes and dikes (around 100 intrusions) from the EDC of southern India are distributed in three distinct fields: 1) the southern Wajrakarur kimberlite field; 2) the northern Narayanpet kimberlite field; and 3) the Raichur kimberlite field (Chalapathi Rao et al, 2013). This study compares the sequences of alteration in samples from two nearby pipes (SK-1 and SK-2, about 1100 m of distance) from Siddanpalli, Raichur Kimberlite field, EDC, southern India. The emplacement of these kimberlites is assumed to have taken place during the Mesoproterozoic, around 1,1 Ga (Chalapathi Rao et al., 2013).
    [Show full text]
  • Kassite Cati2o4(OH)2 C 2001-2005 Mineral Data Publishing, Version 1 Crystal Data: Orthorhombic, Pseudohexagonal
    Kassite CaTi2O4(OH)2 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic, pseudohexagonal. Point Group: n.d. As six-sided crystals, flattened on {010}, and as rosettes of platy crystals, to 0.5 mm, and smaller spherules. Twinning: Common, on {101} and {181}. Physical Properties: Cleavage: {010}, perfect; {101}, distinct. Tenacity: Very brittle. Hardness = 5 D(meas.) = 3.42 D(calc.) = 3.418 Paramagnetic. Some data presented here may be that of cafetite. Optical Properties: Translucent. Color: Brownish pink to pale yellow. Luster: Adamantine. Optical Class: Biaxial (–). Pleochroism: Weak; colorless to pale yellow. Orientation: X = c; Z = b. Dispersion: r> v; very strong. α = 1.95(1) β = 2.13 γ = 2.21 2V(meas.) = 58◦ Cell Data: Space Group: n.d. a = 8.99–9.08 b = 9.55–[9.56] c = 5.23–5.26 Z = 4 X-ray Powder Pattern: Afrikanda massif, Russia. 3.30 (10), 1.761 (10), 4.77 (5), 3.63 (4), 2.29 (4), 1.501 (4), 7.2 (3) Chemistry: (1) (3) SiO2 0.55 TiO2 65.59 68.32 Al2O3 0.98 Fe2O3 1.92 CaO 23.03 23.98 SrO 0.05 Na2O 0.11 K2O 0.04 F 0.04 + H2O 8.04 7.70 − H2O trace −O=F2 0.02 Total 100.33 100.00 (1) Afrikanda massif, Russia; after deduction of SiO2 as titanite, corresponds to [Ca0.95(H3O)0.04Na0.01]Σ=0.96(Ti1.92Fe0.06Al0.05)Σ=2.03O3.96(OH)2.04. (2) Josephine Creek, Oregon, USA; by electron microprobe, analysis not given; stated to correspond to Ca(Ti1.87Fe0.13)Σ=2.00O3.87(OH)2.13.
    [Show full text]
  • 29 2003 Auth Indexword.Indd
    American Mineralogist, Volume 88, pages i–x, 2003 2003 Author Index Akaogi, M., see Sugawara and Akaogi, 1020 Baron, D., see Drouet et al., 1949 crystal-chemical characterization, 464 Alberti, A., Fois, E., and Gamba, A.: A mo- Barrès, O., see Pelletier et al., 1801 Bindi, L., see Bonazzi et al., 223 lecular dynamics study of the behavior of Barrett, S., see Bickmore et al., 709 Bindi, L., see Bonazzi et al., 1796 sodium in low albite, 1 Barron, L.M.: A simple model for the pres- Binu-Lal, S.S., see Santosh et al., 1689 Alcock, J., Myer, K., and Muller, P.D.: Three- sure preservation index of inclusions in Bird, D.K., see Fridriksson et al., 277 dimensional model of heat flow in the diamond, 1615 Bird, D.K., see Fridriksson et al., 1060 aureole of the Marcy anorthosite, Adiron- Barrón, V., Torrent, J., and Grave, E.: Hydroma- Bird, D.K., see Neuhoff et al., 410 dack Highlands, New York: Implications ghemite, an intermediate in the hydrother- Bish, D.L., see Dera et al., 1428 for depth of emplacement, 474 mal transformation of 2-line ferrihydrite Bish, D.L., see Fridriksson et al., 277 Allan, N.L., see Lavrentiev et al., 1522 into hematite, 1679 Bish, D.L., see Fridriksson et al., 1060 Allwardt, J.R., Lee, S.K., and Stebbins, J.F.: Bass, J.D., see Wang et al., 1608 Bish, D.L., see Hou et al., 167 Bonding preferences of non-bridging O at- Baxter, G., see Lesher et al., 1181 Bish, D.L., Vaniman, D.T., Chipera, S.J., and oms: Evidence from 17O MAS and 3QMAS Beane, R.J., see Bostick et al., 1709 Carey, J.W.: The distribution of zeolites and
    [Show full text]
  • Minerals Localities
    MINERALS and their LOCALITIES This book is respectfully dedicated to the memory of Dr. John Sinkankas for his kind initiative and support to publish this book in English version. MINERALS and their LOCALITIES Jan H. Bernard and Jaroslav Hyršl Edited by Vandall T. King © 2004 by Granit, s.r.o. © 2004 Text by Jan H. Bernard and Jaroslav Hyršl © 2004 Photos by Jaroslav Hyršl (463), Studio Granit (534), Jaromír Tvrdý (34), Petr Zajíček (4) The photographed specimens are from the collections of both authors as well as from many other collections. The autors are grateful to all institutions and persons who allowed to photograph their specimens for this book. Front cover photos: Turquoise, polished, 55 mm, Zhilandy, Kazakhstan, G Galena, 45 mm, Madan, Bulgaria, G Sphalerite, xx 12 mm, Morococha, Peru, H Gypsum, xx 40 mm, Las Salinas, Peru, H Variscite, xx 5 mm, Itumbiara, Brazil, H Rhodochrosite, polished, 50 mm, Capillitas, Argentina, H Back cover photo: Wolframite, 45 mm, Yaogangxian, China, H Page 1: Muscovite, 45 mm, Linopolis, Brazil, H Page 2: Vivianite, 100 mm, Huanzala, Bolivia, H Page 3: Liddicoatite, polished, 70 mm, Anjanabonoina, Madagaskar, G Page 5: Opal - fire, polished, 50 mm, Mezezo, Ethiopia, G Page 12: Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm, Eagle's Nest Mine, California, G Published by Granit, s.r.o. Štefánikova 43, 150 00 Praha 5, Czech Republic e-mail: [email protected] www.granit-publishing.cz Composition and reproduction by Studio VVG, Prague Printed in Czech Republic by Finidr, s.r.o., Český Těšín 14/02/03/01 All rights reserved.
    [Show full text]
  • Styles of Alteration of Ti Oxides of the Kimberlite Groundmass: Implications on the Petrogenesis and Classification of Kimberlites and Similar Rocks
    minerals Article Styles of Alteration of Ti Oxides of the Kimberlite Groundmass: Implications on the Petrogenesis and Classification of Kimberlites and Similar Rocks Jingyao Xu 1,* ID , Joan Carles Melgarejo 1 ID and Montgarri Castillo-Oliver 2 1 Department of Mineralogy, Petrology and Applied Geology, Faculty of Earth Sciences, University of Barcelona, 08028 Barcelona, Spain; [email protected] 2 ARC Centre of Excellence for Core to Crust Fluid Systems and GEMOC, Department of Earth and Planetary Sciences, Macquarie University, Sydney, NSW 2019, Australia; [email protected] * Correspondence: [email protected]; Tel.: +34-934-020-406 Received: 27 November 2017; Accepted: 1 February 2018; Published: 6 February 2018 Abstract: The sequence of replacement in groundmass perovskite and spinel from SK-1 and SK-2 kimberlites (Eastern Dharwar craton, India) has been established. Two types of perovskite occur in the studied Indian kimberlites. Type 1 perovskite is found in the groundmass, crystallized directly from the kimberlite magma, it is light rare-earth elements (LREE)-rich and Fe-poor and its DNNO calculated value is from −3.82 to −0.73. The second generation of perovskite (type 2 perovskite) is found replacing groundmass atoll spinel, it was formed from hydrothermal fluids, it is LREE-free and Fe-rich and has very high DNNO value (from 1.03 to 10.52). Type 1 groundmass perovskite may be either replaced by anatase or kassite along with aeschynite-(Ce). These differences in the alteration are related to different f (CO2) and f (H2O) conditions. Furthermore, primary perovskite may be strongly altered to secondary minerals, resulting in redistribution of rare-earth elements (REE) and, potentially, U, Pb and Th.
    [Show full text]