Tantalum, Tungsten, and Tin (“Conflict Minerals)
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Overview of Tungsten Indicator Minerals Scheelite and Wolframite with Examples from the Sisson W-Mo Deposit, Canada
Overview of tungsten indicator minerals scheelite and wolframite with examples from the Sisson W-Mo deposit, Canada M. Beth McClenaghan1, M.A. Parkhill2, A.A. Seaman3, A.G. Pronk3, M. McCurdy1 & D.J. Kontak4 1Geological Survey of Canada, 601 Booth Street, Ottawa, Ontario, Canada K1A 0E8 (e-mail: [email protected]) 2New Brunswick Department of Energy and Mines, Geological Surveys Branch, P.O. Box 50, Bathurst, New Brunswick, Canada E2A 3Z1 3New Brunswick Department of Energy and Mines, Geological Surveys Branch, P.O. Box 6000, Fredericton, New Brunswick, Canada E3B 5H1 4Department of Earth Sciences, Laurentian University, Sudbury, Ontario, Canada P3E 2C6 These short course notes provide an overview of published lit- Table 1. List of regional surveys and case studies conducted around erature on the use of scheelite and wolframite as indicator min- the world in which scheelite and/or wolframite in surficial sediments erals for W, Mo, and Au exploration. The use of scheelite and have been used as indicator minerals. wolframite in stream sediments is well documented for mineral Mineral Media Location Source of Information exploration but less so for using glacial sediments (Table 1). scheelite stream sediments Pakistan Asrarullah (1982) wolframite stream sediments Burma ESCAP Scretariat (1982) The Geological Survey of Canada has recently conducted a scheelite, wolframite stream sediments USA Theobald & Thompson (1960) glacial till and stream sediment indicator mineral case study scheelite stream sediments, soil Thailand Silakul (1986) around the Sisson W-Mo deposit in eastern Canada. scheelite stream sediments Greenland Hallenstein et al. (1981) Preliminary indicator mineral results from this ongoing study scheelite stream sediments Spain Fernández-Turiel et al. -
Repoussé Work for Amateurs
rf Bi oN? ^ ^ iTION av op OCT i 3 f943 2 MAY 8 1933 DEC 3 1938 MAY 6 id i 28 dec j o m? Digitized by the Internet Archive in 2011 with funding from Boston Public Library http://www.archive.org/details/repoussworkforamOOhasl GROUP OF LEAVES. Repousse Work for Amateurs. : REPOUSSE WORK FOR AMATEURS: BEING THE ART OF ORNAMENTING THIN METAL WITH RAISED FIGURES. tfjLd*- 6 By L. L. HASLOPE. ILLUSTRATED. LONDON L. UPCOTT GILL, 170, STRAND, W.C, 1887. PRINTED BY A. BRADLEY, 170, STRAND, LONDON. 3W PREFACE. " JjJjtfN these days, when of making books there is no end," ^*^ and every description of work, whether professional or amateur, has a literature of its own, it is strange that scarcely anything should have been written on the fascinating arts of Chasing and Repousse Work. It is true that a few articles have appeared in various periodicals on the subject, but with scarcely an exception they treated only of Working on Wood, and the directions given were generally crude and imperfect. This is the more surprising when we consider how fashionable Repousse Work has become of late years, both here and in America; indeed, in the latter country, "Do you pound brass ? " is said to be a very common question. I have written the following pages in the hope that they might, in some measure, supply a want, and prove of service to my brother amateurs. It has been hinted to me that some of my chapters are rather "advanced;" in other words, that I have gone farther than amateurs are likely to follow me. -
The H/F Ratio As an Indicator of Contrasted Wolframite Deposition Mechanisms
Ore Geology Reviews 104 (2019) 266–272 Contents lists available at ScienceDirect Ore Geology Reviews journal homepage: www.elsevier.com/locate/oregeorev Short communication The H/F ratio as an indicator of contrasted wolframite deposition T mechanisms ⁎ Julie Anne-Sophie Michaud , Michel Pichavant Université d'Orléans/CNRS/ISTO/BRGM, UMR 7327, 1A rue de la Férollerie, 45100 Orléans, France ARTICLE INFO ABSTRACT Keywords: Understanding wolframite deposition mechanisms is a key to develop reliable exploration guides for W. In quartz Wolframite veins from the Variscan belt of Europe and elsewhere, wolframites have a wide range of compositions, from Hübnerite hübnerite- (MnWO4) to ferberite-rich (FeWO4). Deposition style, source of Mn and Fe, distance from the heat/ W deposition fluid source and temperature have been proposed to govern the wolframite H/F (hübnerite/ferberite ratio) Magmatic control defined as 100 at. Mn/(Fe + Mn). The Argemela mineralized district, located near the world-class Panasqueira W ore deposit W mine in Portugal, exposes a quartz-wolframite vein system in close spatial and genetic association with a rare- Veins metal granite. Wolframite is absent as a magmatic phase, but W-rich whole-rock chemical data suggest that the granite magma is the source of W. Wolframite occurs as large homogeneous hübnerites (H/F = 64–75%) co- existing with montebrasite, K-feldspar and cassiterite in the latest generation of intragranitic veins corre- sponding to magmatic fluids exsolved from the granite. Locally, early hübnerites evolve to late more Fe-rich compositions (H/F = 45–55%). In a country rock vein, an early generation of Fe-rich hübnerites (H/ F = 50–63%) is followed by late ferberites (H/F = 6–23%). -
Washington State Minerals Checklist
Division of Geology and Earth Resources MS 47007; Olympia, WA 98504-7007 Washington State 360-902-1450; 360-902-1785 fax E-mail: [email protected] Website: http://www.dnr.wa.gov/geology Minerals Checklist Note: Mineral names in parentheses are the preferred species names. Compiled by Raymond Lasmanis o Acanthite o Arsenopalladinite o Bustamite o Clinohumite o Enstatite o Harmotome o Actinolite o Arsenopyrite o Bytownite o Clinoptilolite o Epidesmine (Stilbite) o Hastingsite o Adularia o Arsenosulvanite (Plagioclase) o Clinozoisite o Epidote o Hausmannite (Orthoclase) o Arsenpolybasite o Cairngorm (Quartz) o Cobaltite o Epistilbite o Hedenbergite o Aegirine o Astrophyllite o Calamine o Cochromite o Epsomite o Hedleyite o Aenigmatite o Atacamite (Hemimorphite) o Coffinite o Erionite o Hematite o Aeschynite o Atokite o Calaverite o Columbite o Erythrite o Hemimorphite o Agardite-Y o Augite o Calciohilairite (Ferrocolumbite) o Euchroite o Hercynite o Agate (Quartz) o Aurostibite o Calcite, see also o Conichalcite o Euxenite o Hessite o Aguilarite o Austinite Manganocalcite o Connellite o Euxenite-Y o Heulandite o Aktashite o Onyx o Copiapite o o Autunite o Fairchildite Hexahydrite o Alabandite o Caledonite o Copper o o Awaruite o Famatinite Hibschite o Albite o Cancrinite o Copper-zinc o o Axinite group o Fayalite Hillebrandite o Algodonite o Carnelian (Quartz) o Coquandite o o Azurite o Feldspar group Hisingerite o Allanite o Cassiterite o Cordierite o o Barite o Ferberite Hongshiite o Allanite-Ce o Catapleiite o Corrensite o o Bastnäsite -
The Use of Titanium in Dentistry
Cells and Materials Volume 5 Number 2 Article 9 1995 The Use of Titanium in Dentistry Toru Okabe Baylor College of Dentistry, Dallas Hakon Hero Scandinavian Institute of Dental Materials, Haslum Follow this and additional works at: https://digitalcommons.usu.edu/cellsandmaterials Part of the Dentistry Commons Recommended Citation Okabe, Toru and Hero, Hakon (1995) "The Use of Titanium in Dentistry," Cells and Materials: Vol. 5 : No. 2 , Article 9. Available at: https://digitalcommons.usu.edu/cellsandmaterials/vol5/iss2/9 This Article is brought to you for free and open access by the Western Dairy Center at DigitalCommons@USU. It has been accepted for inclusion in Cells and Materials by an authorized administrator of DigitalCommons@USU. For more information, please contact [email protected]. Cells and Materials, Vol. 5, No. 2, 1995 (Pages 211-230) 1051-6794/95$5 0 00 + 0 25 Scanning Microscopy International, Chicago (AMF O'Hare), IL 60666 USA THE USE OF TITANIUM IN DENTISTRY Toru Okabe• and HAkon Hem1 Baylor College of Dentistry, Dallas, TX, USA 1Scandinavian Institute of Dental Materials (NIOM), Haslum, Norway (Received for publication August 8, 1994 and in revised form September 6, 1995) Abstract Introduction The aerospace, energy, and chemical industries have Compared to the metals and alloys commonly used benefitted from favorable applications of titanium and for many years for various industrial applications, tita titanium alloys since the 1950's. Only about 15 years nium is a rather "new" metal. Before the success of the ago, researchers began investigating titanium as a mate Kroll process in 1938, no commercially feasible way to rial with the potential for various uses in the dental field, produce pure titanium had been found. -
Metals and Metal Products Tariff Schedules of the United States
251 SCHEDULE 6. - METALS AND METAL PRODUCTS TARIFF SCHEDULES OF THE UNITED STATES SCHEDULE 6. - METALS AND METAL PRODUCTS 252 Part 1 - Metal-Bearing Ores and Other Metal-Bearing Schedule 6 headnotes: Materials 1, This schedule does not cover — Part 2 Metals, Their Alloys, and Their Basic Shapes and Forms (II chemical elements (except thorium and uranium) and isotopes which are usefully radioactive (see A. Precious Metals part I3B of schedule 4); B. Iron or Steel (II) the alkali metals. I.e., cesium, lithium, potas C. Copper sium, rubidium, and sodium (see part 2A of sched D. Aluminum ule 4); or E. Nickel (lii) certain articles and parts thereof, of metal, F. Tin provided for in schedule 7 and elsewhere. G. Lead 2. For the purposes of the tariff schedules, unless the H. Zinc context requires otherwise — J. Beryllium, Columbium, Germanium, Hafnium, (a) the term "precious metal" embraces gold, silver, Indium, Magnesium, Molybdenum, Rhenium, platinum and other metals of the platinum group (iridium, Tantalum, Titanium, Tungsten, Uranium, osmium, palladium, rhodium, and ruthenium), and precious- and Zirconium metaI a Iloys; K, Other Base Metals (b) the term "base metal" embraces aluminum, antimony, arsenic, barium, beryllium, bismuth, boron, cadmium, calcium, chromium, cobalt, columbium, copper, gallium, germanium, Part 3 Metal Products hafnium, indium, iron, lead, magnesium, manganese, mercury, A. Metallic Containers molybdenum, nickel, rhenium, the rare-earth metals (Including B. Wire Cordage; Wire Screen, Netting and scandium and yttrium), selenium, silicon, strontium, tantalum, Fencing; Bale Ties tellurium, thallium, thorium, tin, titanium, tungsten, urani C. Metal Leaf and FoU; Metallics um, vanadium, zinc, and zirconium, and base-metal alloys; D, Nails, Screws, Bolts, and Other Fasteners; (c) the term "meta I" embraces precious metals, base Locks, Builders' Hardware; Furniture, metals, and their alloys; and Luggage, and Saddlery Hardware (d) in determining which of two or more equally specific provisions for articles "of iron or steel", "of copper", E. -
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 -
The Mineral Industry of Burundi in 2016
2016 Minerals Yearbook BURUNDI [ADVANCE RELEASE] U.S. Department of the Interior January 2020 U.S. Geological Survey The Mineral Industry of Burundi By Thomas R. Yager In 2016, the production of mineral commodities—notably can be found in previous editions of the U.S. Geological Survey gold, tantalum, tin, and tungsten—represented only a minor Minerals Yearbook, volume III, Area Reports—International— part of the economy of Burundi (United Nations Economic Africa, which are available at https://www.usgs.gov/centers/ Commission for Africa, 2017). The legislative framework for nmic/africa-and-middle-east. the mineral sector in Burundi is provided by the Mining Code of Burundi (law No. 1/21 of October 15, 2013). The legislative Reference Cited framework for the petroleum sector is provided by the Mining United Nations Economic Commission for Africa, 2017, Burundi, in African and Petroleum Act of 1976. Data on mineral production are statistical yearbook 2017: United Nations Economic Commission for Africa, in table 1. Table 2 is a list of major mineral industry facilities. p. 113–117. (Accessed November 7, 2018, at https://www.uneca.org/sites/ More-extensive coverage of the mineral industry of Burundi default/files/PublicationFiles/asyb-2017.pdf.) TABLE 1 BURUNDI: PRODUCTION OF MINERAL COMMODITIES1 (Metric tons, gross weight, unless otherwise specified) Commodity2 2012 2013 2014 2015 2016 METALS Gold, mine, Au contente kilograms 500 400 500 500 500 Niobium and tantalum, mine, columbite-tantalite concentrate: Gross weight do. 258,578 73,518 105,547 53,093 r 31,687 Nb contente do. 51,000 14,000 21,000 10,000 r 6,200 Ta contente do. -
Minerals and Mineral Products in Our Bedroom Bed Hematite
Minerals and Mineral Products in our Bedroom Make-Up Kit Muscovite Bed Talc Hematite: hinges, handles, Mica mattress springs Hematite: for color Chromite: chrome plating Bismuth Radio Barite Copper: wiring Plastic Pail Quartz: clock Mica Gold: connections Cassiterite: solder Toilet Bowl / Tub Closet Feldspar: porcelain Chromite: chrome plating Pyrolusite: coloring Hematite: hinges, handles (steel) Chromite: plumbing fixtures Quartz : mirror on door Copper: tubing Desk Toothpaste Hematite: hinges, handles (steel) Apatite: teeth Chromite: chrome plating Fluorite: toothpaste Mirror Rutile: to color false Hematite: handle, frame teeth yellow Chromite: plating Gold: fillings Gold: plating Cinnabar: fillings Quartz: mirror Towels Table Lamp Sphalerite: dyes Brass (an alloy of copper and Chromite: dyes zinc): base Quartz: bulb Water Pipe/Faucet/Shower bulb Wolframite: lamp filament Brass Copper: wiring Iron Nickel Minerals and Mineral Products in our Bedroom Chrome: stainless steel Bathroom Cleaner Department of Environment and Natural Resources Borax: abrasive, cleaner, and antiseptic MINES AND GEOSCIENCES BUREAU Deodorant Spray Can Cassiterite Chromite Copper Carpet Quartz Sphalerite: dyes Telephone Chromite: dyes Drinking Glasses Copper: wiring Sulfur: foam padding Quartz Chromite: plating Gold: red color Clock Silver: electronics Pentlandite: spring Graphite: batteries Refrigerator Quartz: glass, time keeper Hematite Television Chromite: stainless steel Chromite: plating Computer Galena Wolframite: monitor Wolframite: monitor Copper Copper: -
The Periodic Table of Elements
The Periodic Table of Elements 1 2 6 Atomic Number = Number of Protons = Number of Electrons HYDROGENH HELIUMHe 1 Chemical Symbol NON-METALS 4 3 4 C 5 6 7 8 9 10 Li Be CARBON Chemical Name B C N O F Ne LITHIUM BERYLLIUM = Number of Protons + Number of Neutrons* BORON CARBON NITROGEN OXYGEN FLUORINE NEON 7 9 12 Atomic Weight 11 12 14 16 19 20 11 12 13 14 15 16 17 18 SODIUMNa MAGNESIUMMg ALUMINUMAl SILICONSi PHOSPHORUSP SULFURS CHLORINECl ARGONAr 23 24 METALS 27 28 31 32 35 40 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 POTASSIUMK CALCIUMCa SCANDIUMSc TITANIUMTi VANADIUMV CHROMIUMCr MANGANESEMn FeIRON COBALTCo NICKELNi CuCOPPER ZnZINC GALLIUMGa GERMANIUMGe ARSENICAs SELENIUMSe BROMINEBr KRYPTONKr 39 40 45 48 51 52 55 56 59 59 64 65 70 73 75 79 80 84 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 RUBIDIUMRb STRONTIUMSr YTTRIUMY ZIRCONIUMZr NIOBIUMNb MOLYBDENUMMo TECHNETIUMTc RUTHENIUMRu RHODIUMRh PALLADIUMPd AgSILVER CADMIUMCd INDIUMIn SnTIN ANTIMONYSb TELLURIUMTe IODINEI XeXENON 85 88 89 91 93 96 98 101 103 106 108 112 115 119 122 128 127 131 55 56 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 CESIUMCs BARIUMBa HAFNIUMHf TANTALUMTa TUNGSTENW RHENIUMRe OSMIUMOs IRIDIUMIr PLATINUMPt AuGOLD MERCURYHg THALLIUMTl PbLEAD BISMUTHBi POLONIUMPo ASTATINEAt RnRADON 133 137 178 181 184 186 190 192 195 197 201 204 207 209 209 210 222 87 88 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 FRANCIUMFr RADIUMRa RUTHERFORDIUMRf DUBNIUMDb SEABORGIUMSg BOHRIUMBh HASSIUMHs MEITNERIUMMt DARMSTADTIUMDs ROENTGENIUMRg COPERNICIUMCn NIHONIUMNh -
6 W Elding Accessories Tungsten Electrodes Magnesium Aluminum
Sylvania Tungsten Vendor Code: SYL Tungsten Electrodes Magnesium Magnesium alloys are in 3 groups. They are: (1) aluminum-zinc-magnesium, (2) aluminum-magnesium and (3) manganese-magnesium. Since magnesium will absorb a number of harmful ingredients and oxidize rapidly when subjected to welding heat, TIG welding in an inert gas atmosphere is distinctly advantageous. The welding of magnesium is similar, in many respects, to the welding of aluminum. Magnesium was one of the first metals to be welded commercially by the inert-gas nonconsumable process (TIG). Accessories Welding Aluminum The use of TIG welding for aluminum has many advantages for both manual and automatic processes. Filler metal can be either wire or rod and should be compatible with the base alloy. Filler metal must be Ground Dia. Length Electrodes dry, free of oxides, grease or other foreign matter. If filler metal becomes damp, heat for 2 hours at Part No. (inches) (inches) 250˚ F before using. Although AC high-frequency stabilized current is recommended, DC reverse polarity 0407G .040 7 has been successfully used for thicknesses up to 3/32". 1167G 1/16 7 Stainless Steel Pure 3327G 3/32 7 In TIG welding of stainless steel, welding rods having the AWS-ASTM prefixes of E or ER can be used as 187G 1/8 7 filler rods. However, only bare uncoated rods should be used. Stainless steel can be welded using AC high frequency stabilized current, however, for DC straight polarity current recommendations must be increased 5327G 5/32 7 6 25%. Light gauge metal less than 1/16" thick should always be welded with DC straight polarity using 0407GL .040 7 argon gas. -
Stainless Steel Activator for Gold
CASWELL 7696 Route 31, Lyons NY 14489 Voice - (315) 946-1213 Fax - (315) 946-4456 Www.caswellplating.com [email protected] STAINLESS STEEL ACTIVATOR FOR GOLD 1. Fill a one quart or 1000 ml beaker nearly full with Activator-SS. 2. Check solution temperature to assure it is between 80-100 degrees Fahrenheit. 3. Check connections from power supply to anode and work to be sure the negative (-) and positive (+) wires are connected properly. • The work should be charged negative (-), and the anode positive (+). • Use a Stainless Steel Anode 4. Turn rectifier on. 5. Activate at 6-8 volts for 45-60 seconds depending on size of part. Part should be completely clean prior to further plating. 6. Larger parts require slightly higher voltage, while smaller parts require lower voltage. If part shows any burning such as dark or gray deposits around the edges, you are burning the part and must lower the voltage. If part is not cleaning after two minutes, voltage is too low, therefore, increase voltage slightly. 7. After Activating, rinse part thoroughly in water and continue the plating process with Fastgold brush plating or Caswell Tank Plating Gold at 140 degrees Fahrenheit. Plate 15- 30 seconds longer than normal. 8. If you are not going to continue the plating process immediately, then dry the part thoroughly. When you continue the plating process, re-activate the part in Activator~SS to assure better adhesion. 9. Change solution when Activator-55 becomes inactive, reaches a pH higher than 2, or noticeably dirty. Discard &: Replace: Activator-SSTM is a rugged solution and is designed to help assure long life.