The Journal of Gemmology VOLUME 25 NUMBER 1 JANUARY 1996
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Infrared and Raman Spectroscopic Characterization of the Silicateв
Journal of Molecular Structure 1042 (2013) 1–7 Contents lists available at SciVerse ScienceDirect Journal of Molecular Structure journal homepage: www.elsevier.com/locate/molstruc Infrared and Raman spectroscopic characterization of the silicate–carbonate mineral carletonite – KNa4Ca4Si8O18(CO3)4(OH,F)ÁH2O ⇑ Ray L. Frost a, , Yunfei Xi a, Ricardo Scholz b, Andrés López a, Fernanda Maria Belotti c a School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia b Geology Department, School of Mines, Federal University of Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-00, Brazil c Federal University of Itajubá, Campus Itabira, Itabira, MG 35903-087, Brazil article info abstract Article history: An assessment of the molecular structure of carletonite a rare phyllosilicate mineral with general chem- Received 28 February 2013 ical formula given as KNa4Ca4Si8O18(CO3)4(OH,F)ÁH2O has been undertaken using vibrational spectros- Received in revised form 19 March 2013 copy. Carletonite has a complex layered structure. Within one period of c, it contains a silicate layer of Accepted 19 March 2013 composition NaKSi O ÁH O, a carbonate layer of composition NaCO Á0.5H O and two carbonate layers Available online 26 March 2013 8 18 2 3 2 of composition NaCa2CO3(F,OH)0.5. À1 2À Raman bands are observed at 1066, 1075 and 1086 cm . Whether these bands are due to the CO m1 Keywords: 3 symmetric stretching mode or to an SiO stretching vibration is open to question. Carletonite Multiple bands are observed in the 300–800 cmÀ1 spectral region, making the attribution of these Carbonate Infrared bands difficult. -
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 -
Apophyllite-(Kf)
December 2013 Mineral of the Month APOPHYLLITE-(KF) Apophyllite-(KF) is a complex mineral with the unusual tendency to “leaf apart” when heated. It is a favorite among collectors because of its extraordinary transparency, bright luster, well- developed crystal habits, and occurrence in composite specimens with various zeolite minerals. OVERVIEW PHYSICAL PROPERTIES Chemistry: KCa4Si8O20(F,OH)·8H20 Basic Hydrous Potassium Calcium Fluorosilicate (Basic Potassium Calcium Silicate Fluoride Hydrate), often containing some sodium and trace amounts of iron and nickel. Class: Silicates Subclass: Phyllosilicates (Sheet Silicates) Group: Apophyllite Crystal System: Tetragonal Crystal Habits: Usually well-formed, cube-like or tabular crystals with rectangular, longitudinally striated prisms, square cross sections, and steep, diamond-shaped, pyramidal termination faces; pseudo-cubic prisms usually have flat terminations with beveled, distinctly triangular corners; also granular, lamellar, and compact. Color: Usually colorless or white; sometimes pale shades of green; occasionally pale shades of yellow, red, blue, or violet. Luster: Vitreous to pearly on crystal faces, pearly on cleavage surfaces with occasional iridescence. Transparency: Transparent to translucent Streak: White Cleavage: Perfect in one direction Fracture: Uneven, brittle. Hardness: 4.5-5.0 Specific Gravity: 2.3-2.4 Luminescence: Often fluoresces pale yellow-green. Refractive Index: 1.535-1.537 Distinctive Features and Tests: Pseudo-cubic crystals with pearly luster on cleavage surfaces; longitudinal striations; and occurrence as a secondary mineral in association with various zeolite minerals. Laboratory analysis is necessary to differentiate apophyllite-(KF) from closely-related apophyllite-(KOH). Can be confused with such zeolite minerals as stilbite-Ca [hydrous calcium sodium potassium aluminum silicate, Ca0.5,K,Na)9(Al9Si27O72)·28H2O], which forms tabular, wheat-sheaf-like, monoclinic crystals. -
Adamsite-(Y), a New Sodium–Yttrium Carbonate Mineral
1457 The Canadian Mineralogist Vol. 38, pp. 1457-1466 (2000) ADAMSITE-(Y), A NEW SODIUM–YTTRIUM CARBONATE MINERAL SPECIES FROM MONT SAINT-HILAIRE, QUEBEC JOEL D. GRICE§ and ROBERT A. GAULT Research Division, Canadian Museum of Nature, P.O. Box 3443, Station D, Ottawa, Ontario K1P 6P4, Canada ANDREW C. ROBERTS Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario K1A 0E8, Canada MARK A. COOPER Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada ABSTRACT Adamsite-(Y), ideally NaY(CO3)2•6H2O, is a newly identified mineral from the Poudrette quarry, Mont Saint-Hilaire, Quebec. It occurs as groups of colorless to white and pale pink, rarely pale purple, flat, acicular to fibrous crystals. These crystals are up to 2.5 cm in length and form spherical radiating aggregates. Associated minerals include aegirine, albite, analcime, ancylite-(Ce), calcite, catapleiite, dawsonite, donnayite-(Y), elpidite, epididymite, eudialyte, eudidymite, fluorite, franconite, gaidonnayite, galena, genthelvite, gmelinite, gonnardite, horváthite-(Y), kupletskite, leifite, microcline, molybdenite, narsarsukite, natrolite, nenadkevichite, petersenite-(Ce), polylithionite, pyrochlore, quartz, rhodochrosite, rutile, sabinaite, sérandite, siderite, sphalerite, thomasclarkite-(Y), zircon and an unidentified Na–REE carbonate (UK 91). The transparent to translucent mineral has a vitreous to pearly luster and a white streak. It is soft (Mohs hardness 3) and brittle with perfect {001} and good {100} and {010} cleav- ␣  ␥ ° ° ages. Adamsite-(Y) is biaxial positive, = V 1.480(4), = 1.498(2), = 1.571(4), 2Vmeas. = 53(3) , 2Vcalc. = 55 and is nonpleochroic. Optical orientation: X = [001], Y = b, Z a = 14° (in  obtuse). It is triclinic, space group P1,¯ with unit-cell parameters refined from powder data: a 6.262(2), b 13.047(6), c 13.220(5) Å, ␣ 91.17(4),  103.70(4), ␥ 89.99(4)°, V 1049.1(5) Å3 and Z = 4. -
The Journal of Gemmology Editor: Dr R.R
he Journa TGemmolog Volume 25 No. 8 October 1997 The Gemmological Association and Gem Testing Laboratory of Great Britain Gemmological Association and Gem Testing Laboratory of Great Britain 27 Greville Street, London Eel N SSU Tel: 0171 404 1134 Fax: 0171 404 8843 e-mail: [email protected] Website: www.gagtl.ac.uklgagtl President: Professor R.A. Howie Vice-Presidents: LM. Bruton, Af'. ram, D.C. Kent, R.K. Mitchell Honorary Fellows: R.A. Howie, R.T. Liddicoat Inr, K. Nassau Honorary Life Members: D.). Callaghan, LA. lobbins, H. Tillander Council of Management: C.R. Cavey, T.]. Davidson, N.W. Decks, R.R. Harding, I. Thomson, V.P. Watson Members' Council: Aj. Allnutt, P. Dwyer-Hickey, R. fuller, l. Greatwood. B. jackson, J. Kessler, j. Monnickendam, L. Music, l.B. Nelson, P.G. Read, R. Shepherd, C.H. VVinter Branch Chairmen: Midlands - C.M. Green, North West - I. Knight, Scottish - B. jackson Examiners: A.j. Allnutt, M.Sc., Ph.D., leA, S.M. Anderson, B.Se. (Hons), I-CA, L. Bartlett, 13.Se, .'vI.phil., I-G/\' DCi\, E.M. Bruton, FGA, DC/\, c.~. Cavey, FGA, S. Coelho, B.Se, I-G,\' DGt\, Prof. A.T. Collins, B.Sc, Ph.D, A.G. Good, FGA, f1GA, Cj.E. Halt B.Sc. (Hons), FGr\, G.M. Howe, FG,'\, oo-, G.H. jones, B.Se, PhD., FCA, M. Newton, B.Se, D.PhiL, H.L. Plumb, B.Sc., ICA, DCA, R.D. Ross, B.5e, I-GA, DGA, P..A.. Sadler, 13.5c., IGA, DCA, E. Stern, I'GA, DC/\, Prof. I. -
General Index
CAL – CAL GENERAL INDEX CACOXENITE United States Prospect quarry (rhombs to 3 cm) 25:189– Not verified from pegmatites; most id as strunzite Arizona 190p 4:119, 4:121 Campbell shaft, Bisbee 24:428n Unanderra quarry 19:393c Australia California Willy Wally Gully (spherulitic) 19:401 Queensland Golden Rule mine, Tuolumne County 18:63 Queensland Mt. Isa mine 19:479 Stanislaus mine, Calaveras County 13:396h Mt. Isa mine (some scepter) 19:479 South Australia Colorado South Australia Moonta mines 19:(412) Cresson mine, Teller County (1 cm crystals; Beltana mine: smithsonite after 22:454p; Brazil some poss. melonite after) 16:234–236d,c white rhombs to 1 cm 22:452 Minas Gerais Cripple Creek, Teller County 13:395–396p,d, Wallaroo mines 19:413 Conselheiro Pena (id as acicular beraunite) 13:399 Tasmania 24:385n San Juan Mountains 10:358n Renison mine 19:384 Ireland Oregon Victoria Ft. Lismeenagh, Shenagolden, County Limer- Last Chance mine, Baker County 13:398n Flinders area 19:456 ick 20:396 Wisconsin Hunter River valley, north of Sydney (“glen- Spain Rib Mountain, Marathon County (5 mm laths donite,” poss. after ikaite) 19:368p,h Horcajo mines, Ciudad Real (rosettes; crystals in quartz) 12:95 Jindevick quarry, Warregul (oriented on cal- to 1 cm) 25:22p, 25:25 CALCIO-ANCYLITE-(Ce), -(Nd) cite) 19:199, 19:200p Kennon Head, Phillip Island 19:456 Sweden Canada Phelans Bluff, Phillip Island 19:456 Leveäniemi iron mine, Norrbotten 20:345p, Québec 20:346, 22:(48) Phillip Island 19:456 Mt. St-Hilaire (calcio-ancylite-(Ce)) 21:295– Austria United States -
Carbon Mineral Ecology: Predicting the Undiscovered Minerals of Carbon
American Mineralogist, Volume 101, pages 889–906, 2016 Carbon mineral ecology: Predicting the undiscovered minerals of carbon ROBERT M. HAZEN1,*, DANIEL R. HUMMER1, GRETHE HYSTAD2, ROBERT T. DOWNS3, AND JOSHUA J. GOLDEN3 1Geophysical Laboratory, Carnegie Institution, 5251 Broad Branch Road NW, Washington, D.C. 20015, U.S.A. 2Department of Mathematics, Computer Science, and Statistics, Purdue University Calumet, Hammond, Indiana 46323, U.S.A. 3Department of Geosciences, University of Arizona, 1040 East 4th Street, Tucson, Arizona 85721-0077, U.S.A. ABSTRACT Studies in mineral ecology exploit mineralogical databases to document diversity-distribution rela- tionships of minerals—relationships that are integral to characterizing “Earth-like” planets. As carbon is the most crucial element to life on Earth, as well as one of the defining constituents of a planet’s near-surface mineralogy, we focus here on the diversity and distribution of carbon-bearing minerals. We applied a Large Number of Rare Events (LNRE) model to the 403 known minerals of carbon, using 82 922 mineral species/locality data tabulated in http://mindat.org (as of 1 January 2015). We find that all carbon-bearing minerals, as well as subsets containing C with O, H, Ca, or Na, conform to LNRE distributions. Our model predicts that at least 548 C minerals exist on Earth today, indicating that at least 145 carbon-bearing mineral species have yet to be discovered. Furthermore, by analyzing subsets of the most common additional elements in carbon-bearing minerals (i.e., 378 C + O species; 282 C + H species; 133 C + Ca species; and 100 C + Na species), we predict that approximately 129 of these missing carbon minerals contain oxygen, 118 contain hydrogen, 52 contain calcium, and more than 60 contain sodium. -
AUTHOR INDEX to VOLUME 56 3-4 620 3-4 665 L-2 354 7-8 Ll47 3-4 628 5-6 888 9-10 1760 L-2 307 7-8 1208 7-8 1180 9-10 1617 Rr-12 2
AUTHOR INDEX TO VOLUME 56 Albright, Jarnes N. Vaterite stability 3-4 620 Allen, Rhesa M., Jr. Memorial of Alfred Leonard Anderson; November 19, 3-4 665 1900-January 27, 1964 1-9 1))') Anderson, C. P. Refinement ofthe crystal structure ofapophyllite; I, X'ray diffraction and physical properties Anderson, Charles P. Refinement of the crystal structure of apophyllite [abstr.] l-2 354 Anthony, John W. The crystal structure of legrandite 7-8 ll47 Aoki, Ilideki Reactions of magnesium carbonates by direct x-ray diffraction under 3-4 628 hydrothermal conditions Appleman, Daniel E. Crystal chemistry of a lunar pigeonite 5-6 888 Aramaki, Shigeo. Hydrothermal determination of temperature and water pressure of 9-10 1760 the magma of Aira caldera, Japan Arern, Joel E. Chevkinite and perrierite; synthesis, crystal growth and polymorphism l-2 307 Bachinski, Sharon W. Rate of Al-Si ordering in sanidines from an ignimbrite cooling 7-8 1208 unit Bailey, S. W. Antiphase domain structure of the intermediate composition plagioclase 7-8 1180 feldspars Bancroft, G. M. Miissbauer spectra of minerals along the diopside-hedenbergite tie 9-10 1617 line Barber, D. J. Mounting methods for mineral grains to be examined by high resolution rr-12 2152 electron microscopy Barton, Paul B., Jr. Sub-solidus relations in the system PbS-CdS ll-12 2034 Barton, R., Jr. Refinement of the crystal structure of elbaite [abstr.] r-2 356 Bates, Thornas F, Presentation of the Roebling Medal of the Mineralogical Society 3-4 653 of America for 1970 to George W. Brindley Bates,Ihornas F. Memorial of Paul Dimitri Krynine; September 19, 19O2-September 3-4 690 12. -
A New Beryllium Silicate Mineral Species from Mont Saint-Hilaire, Quebec
193 The Canadian Mineralogist Vol. 47, pp. 193-204 (2009) DOI : 10.3749/canmin.47.1.193 BUSSYITE-(Ce), A NEW BERYLLIUM SILICATE MINERAL SPECIES FROM MONT SAINT-HILAIRE, QUEBEC JOEL D. GRICE§, RALPH ROWE AN D GLENN POIRIER Research Division, Canadian Museum of Nature, P.O. Box 3443, Station D, Ottawa, Ontario K1P 6P4, Canada ALLEN PRATT CANMET, Mining and Mineral Sciences Laboratories, 555 Booth Street, Ottawa, Ontario K1A 0G1, Canada JAMES FRANCIS Surface Science Western, University Western Ontario, London, Ontario N6A 5B7, Canada ABS tr A ct Bussyite-(Ce), ideally (Ce,REE,Ca)3(Na,H2O)6MnSi9Be5(O,OH)30(F,OH)4, a new mineral species, was found in the Mont Saint-Hilaire quarry, Quebec. The crystals are transparent to translucent, pale pinkish orange in color, with a white streak and vitreous luster. Bladed crystals are prismatic, having forms {111} and {101}; they are elongate on [101], up to 10 mm in length. Associated minerals include aegirine, albite, analcime, ancylite-(Ce), calcite, catapleiite, gonnardite, hydrotalcite, kupletskite, leucophanite, microcline, nenadkevichite, polylithionite, serandite and sphalerite. Bussyite-(Ce) is monoclinic, space group C2/c, with unit-cell parameters refined from powder-diffraction data: a 11.654(3), b 13.916(3), c 16.583(4) Å, b 95.86(2)°, V 3 2675.4(8) Å and Z = 4. Electron-microprobe and secondary-ion mass spectrometric analyses give the average and ranges: Na2O 7.63 (9.40–6.62), K2O 0.05 (0.13–0.0), BeO 8.33 (SIMS), CaO 5.35 (5.95–4.17), MgO 0.03 (0.11–0.00), MnO 2.49 (3.00–1.71), Al2O3 0.82 (1.54–0.39), Y2O3 1.97 (2.68–1.51), La2O3 2.65 (3.11–2.16), Ce2O3 9.77 (11.22 –8.15), Pr2O3 1.23 (1.49 –0.74), Nd2O3 4.54 (5.13–3.91), Sm2O3 0.99 (1.25–0.68), Eu2O3 0.010 (0.25–0.0), Gd2O3 1.03 (1.23–0.81), SiO2 38.66 (39.94–37.66), ThO2 3.31 (4.59–2.12), F 3.67 (6.39–2.54), S 0.03 (0.08–0), H2O 4.12 (determined from crystal-structure analysis), for a total of 95.21 wt.%. -
Combined Single-Crystal X-Ray and Neutron Powder Diffraction Structure
American Mineralogist, Volume 95, pages 519–526, 2010 Combined single-crystal X-ray and neutron powder diffraction structure analysis exemplified through full structure determinations of framework and layer beryllate minerals JENNIFER A. ARMSTRONG ,1 HENRIK FRIIS,2 ALEX A NDR A LIEB ,1,* ADRI A N A. FINC H ,2 A ND MA RK T. WELLER 1,† 1School of Chemistry, University of Southampton, Highfield, Southampton, Hampshire SO17 1BJ, U.K. 2School of Geography and Geosciences, Irvine Building, University of St. Andrews, North Street, St. Andrews, Fife KY16 9AL, U.K. ABSTR A CT Structural analysis, using neutron powder diffraction (NPD) data on small quantities (<300 mg) and in combination with single-crystal X-ray diffraction (SXD) data, has been employed to determine accurately the position of hydrogen and other light atoms in three rare beryllate minerals, namely bavenite, leifite/IMA 2007-017, and nabesite. For bavenite, leifite/IMA 2007-017, and nabesite, sig- nificant differences in the distribution of H, as compared to the literature using SXD analysis alone, have been found. The benefits of NPD data, even with small quantities of H-containing materials, and, more generally, in applying a combined SXD-NPD method to structure analysis of minerals are discussed, with reference to the quality of the crystallographic information obtained. Keywords: Hydrogen, beryllium, minerals, powder neutron diffraction INTRODUCTION lower cation charge, Be2+ vs. Si4+. Thus, a bridging or terminal Information on crystal structure of minerals, including the O forming part of a Beϕ4 tetrahedron is under-bonded compared localization of light atoms such as H and Be, is of considerable to the equivalent Siφ4 unit leading to the prevalence of Be-OH importance because it allows a better understanding of the min- and Be-F in beryllate minerals (Hawthorne and Huminicki eral behavior under natural conditions. -
Written in Stone: Remembering Master Facetor Art Grant
GEMOLOGY Written in Stone: Remembering Master Faceter Art Grant By Elise A. Skalwold f ever a person’s legacy could be said to be “written Fig. 1: Arthur Tracey Grant, Jr. 1925-2015 in stone” it may well be that of legendary gem (Photo courtesy of cutter, Arthur Tracey Grant, Jr. who passed away on Nancy Grant Pritchard) September 24, 2015, in Richmond, Kentucky at the age of 90 (Fig. 1). Even for those Iwho do not frequent the yearly Fig. 2: The Scovil, Robert Weldon, Michael shows and symposia of the mineral 3,965.35-carat blue J. Bainbridge and Chip Clark; and gem community, a visit to the fluorite known as the latter’s images appear in the “Big Blue” from the venerable Smithsonian Institution in Minerva #2 mine, Smithsonian’s publications and Washington D.C. is hardly complete Hardin County, on its website. It was through a Illinois resides in without wandering through the gem the Smithsonian’s photographer’s eye and in the and mineral collections housed course of gemological studies Fig.2A: A restored National Gem within its great halls. 1987 snapshot of Collection, a gift of that I first became aware of the Harold and Doris Awestruck visitors, young and old, Art at the Desert astounding skill of this lapidary Inn, Tucson, Arizona Dibble in 1992 (Photo can gaze upon some of the largest holding the fluorite by Tino Hammid. artist and of the beauty which Courtesy of Nancy and most magnificent gemstones in octahedron from he was capable of bringing forth which he cut the Big Grant Pritchard). -
Stability of Na–Be Minerals in Late-Magmatic Fluids of the Ilímaussaq Alkaline Complex, South Greenland
Stability of Na–Be minerals in late-magmatic fluids of the Ilímaussaq alkaline complex, South Greenland Gregor Markl Various Na-bearing Be silicates occur in late-stage veins and in alkaline rocks metasomatised by late-magmatic fluids of the Ilímaussaq alkaline complex in South Greenland. First, chkalovite crys- tallised with sodalite around 600°C at 1 kbar. Late-magmatic assemblages formed between 400 and 200°C and replaced chkalovite or grew in later veins from an H2O-rich fluid. This fluid is also recorded in secondary fluid inclusions in most Ilímaussaq nepheline syenites. The late assem- blages comprise chkalovite + ussingite, tugtupite + analcime ± albite, epididymite + albite, bertrandite ± beryllite + analcime, and sphaerobertrandite + albite or analcime(?). Quantitative phase diagrams involving minerals of the Na–Al–Si–O–H–Cl system and various Be minerals show that tugtupite co-exists at 400°C only with very Na-rich or very alkalic fluids [log 2 (a /a ) > 6–8; log (a 2+/(a ) ) > –3]. The abundance of Na-rich minerals and of the NaOH-bear- Na+ H+ Be H+ ing silicate ussingite indicates the importance of both of these parameters. Water activity and silica activity in these fluids were in the range 0.7–1 and 0.05–0.3, and XNaCl in a binary hydrous fluid was below 0.2 at 400°C. As bertrandite is only stable at < 220°C at 1 kbar, the rare formation of epididymite, eudidymite, bertrandite and sphaerobertrandite by chkalovite-consuming reactions occurred at still lower temperatures and possibly involved fluids of higher silica activity. Institut für Mineralogie, Petrologie und Geochemie, Eberhard-Karls-Universität, Wilhelmstrasse 56, D-72074 Tübingen, Germany.