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Vanadium Pentoxide and Other Inorganic Vanadium Compounds
This report contains the collective views of an international group of experts and does not necessarily represent the decisions or the stated policy of the United Nations Environment Programme, the International Labour Organization, or the World Health Organization. Concise International Chemical Assessment Document 29 VANADIUM PENTOXIDE AND OTHER INORGANIC VANADIUM COMPOUNDS Note that the layout and pagination of this pdf file are not identical to the printed CICAD First draft prepared by Dr M. Costigan and Mr R. Cary, Health and Safety Executive, Liverpool, United Kingdom, and Dr S. Dobson, Centre for Ecology and Hydrology, Huntingdon, United Kingdom Published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organization, and the World Health Organization, and produced within the framework of the Inter-Organization Programme for the Sound Management of Chemicals. World Health Organization Geneva, 2001 The International Programme on Chemical Safety (IPCS), established in 1980, is a joint venture of the United Nations Environment Programme (UNEP), the International Labour Organization (ILO), and the World Health Organization (WHO). The overall objectives of the IPCS are to establish the scientific basis for assessment of the risk to human health and the environment from exposure to chemicals, through international peer review processes, as a prerequisite for the promotion of chemical safety, and to provide technical assistance in strengthening national capacities for the sound management -
C:\Documents and Settings\Alan Smithee\My Documents\MOTM\Smithsonite.Wpd
@oqhk1//0Lhmdq`knesgdLnmsg9Rlhsgrnmhsd We are delighted to present another mineral, beautiful in appearance, significant to modern man and to our ancestors, and whose name honors a man who never saw America, but made a most significant contribution to its national education! OGXRHB@K OQNODQSHDR Chemistry: ZnCo3 Zinc Carbonate Class: Carbonates Dana’s: Anhydrous Carbonates Crystal System: Hexagonal-Trigonal Crystal Habits: Crystals are rare, usually as rhombohedrons, often curved and rough, or more rarely, as scalenohedrons; Usually as crusts; Botryoidal, stalactitic, reniform; Massive, granular, earthy Color: Grayish white to dark gray, greenish or brownish white, also green to apple-green, blue, green- blue, yellow, pink, brown, or white; rarely, colorless and transparent Luster: Greasy to vitreous Transparency: Transparent to translucent Streak: White Refractive Index: 1.848, 1.621 Cleavage: Perfect in one direction Fracture: Uneven to conchoidal; brittle Hardness: 4.5 Specific Gravity: 4.2 Luminescence: Often fluoresces white, vivid blue, pink, red, yellow, and orange under shortwave and longwave ultraviolet light Distinctive Features and Tests: Specific gravity and hardness higher than other carbonates; Infusible Dana Classification Number: 14.1.1.6 M @L D Our featured mineral is pronounced smith!-sun-t, and was named in 1832 in honor of British mineralogist and chemist James Smithson (1765-1829), whose legacy provided for the foundation of the Smithsonian Institute, and who did much research into zinc and zinc minerals. See History and Lore for more information on the man and the institution. BNL ONRHSHNM Smithsonite is the sixth member of the carbonates class to be our featured mineral, after azurite (September 1996), calcite (November 1996), rhodochrosite (October 1997), aragonite (June 2000) and dolomite (January 2001). -
Download PDF About Minerals Sorted by Mineral Name
MINERALS SORTED BY NAME Here is an alphabetical list of minerals discussed on this site. More information on and photographs of these minerals in Kentucky is available in the book “Rocks and Minerals of Kentucky” (Anderson, 1994). APATITE Crystal system: hexagonal. Fracture: conchoidal. Color: red, brown, white. Hardness: 5.0. Luster: opaque or semitransparent. Specific gravity: 3.1. Apatite, also called cellophane, occurs in peridotites in eastern and western Kentucky. A microcrystalline variety of collophane found in northern Woodford County is dark reddish brown, porous, and occurs in phosphatic beds, lenses, and nodules in the Tanglewood Member of the Lexington Limestone. Some fossils in the Tanglewood Member are coated with phosphate. Beds are generally very thin, but occasionally several feet thick. The Woodford County phosphate beds were mined during the early 1900s near Wallace, Ky. BARITE Crystal system: orthorhombic. Cleavage: often in groups of platy or tabular crystals. Color: usually white, but may be light shades of blue, brown, yellow, or red. Hardness: 3.0 to 3.5. Streak: white. Luster: vitreous to pearly. Specific gravity: 4.5. Tenacity: brittle. Uses: in heavy muds in oil-well drilling, to increase brilliance in the glass-making industry, as filler for paper, cosmetics, textiles, linoleum, rubber goods, paints. Barite generally occurs in a white massive variety (often appearing earthy when weathered), although some clear to bluish, bladed barite crystals have been observed in several vein deposits in central Kentucky, and commonly occurs as a solid solution series with celestite where barium and strontium can substitute for each other. Various nodular zones have been observed in Silurian–Devonian rocks in east-central Kentucky. -
JAN Iia 20U T6T1/V
IN REPLY REFER TO: UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY WASHINGTON 25. D.C. November 19, 1956 AEC-193/7 Mr. Robert D. Nininger Assistant Director for Exploration Division of Bav Materials U* S. Atomic Energy Commission Washington 25, D. C, Dear Bobs Transmitted herewith are three copies of TEI-622, "The crystal chemistry and mineralogy of vanadium," by Ho-ward T. Evans, Jr. Me are asking Mr. Hosted to approve our plan to publish this report as a chapter of a Geological Survey professional paper on miner alogy and geochemistry of the ores of the Colorado Plateau. Aelrnovledg- ment of AEC sponsorship will be made in the introductory chapter* Sincerely yours, r ^ O U—— TV , Z^*i—w«__ ™~ W. H. Bradley Chief Geoldigist .JAN iia 20U T6T1/V Geology and 8$i:aeralQgy This document consists of k-2 pages* Series A» Howard T. Erans, Jr, Trace Elements Investigations Report 622 This preliminary report is distributed without editorial and technical review for conformity with official standards and nomenclature. It is not for public inspection or quotation* *This report concerns work done on behalf of the Division of Raw Materials of the U. S« Atomic Energy Commission* - TEI-622 AHD MIHERALQ6T Distribution (Series A) Ro. of copies Atomic Energy Commission, Washington .»**«»..*»..«*»..««..*... 2 Division of Rs¥ Materials, Albuquerque ,...****.*.«.»*.....*.. 1 Division of Raw Materials, Austin »«,..«.»...»*.»...*«..*...«» 1 Diylsion of Raw Materials, Butte *«*,.»».*..,*...».»......*.*. 1 Division of Raw Materials, Casper ............a............... 1 Division of Raw Ifeterials, Denver ,........»...».....«.,.*..... 1 Division of Raw Materials, Ishpeming .................a....... 1 Division of Raw Materials, Pnoenix ...a.....,....*........*... 1 Division of Eaw Materials, Rapid City ....................... -
Crystal Chemistry of Wulfenite (Pbmoo4) and Wolframite (Fe,Mn)WO4 Author Information – Darren A
Crystal Chemistry of Wulfenite (PbMoO4) and Wolframite (Fe,Mn)WO4 Author information – Darren A. Umbsaar Affiliation – University of Calgary Summary In this study, the crystal structure and chemistry of a selection of wulfenite (PbMoO4) and wolframite ((Fe,Mn)WO4) samples from various worldwide localities are examined. These 2+ minerals have the same general formula, ABO4, where A is a divalent metal cation (e.g. Mn , Fe2+, Pb2+, etc.) and B is a highly charged cation (W6+ or Mo6+). These minerals crystallize in two different space groups; (1) wulfenite crystallizes in the tetragonal scheelite-type structure (space group I41/a, formula units, Z, = 4), whereas (2) wolframite crystallizes in the monoclinic wolframite- type structure (space group P2/c, Z = 2). The space group symmetry and cell dimensions are largely dictated by the ionic radius of the A site cation. In general, when the A cation radius is >0.90Å the crystal will form the tetragonal scheelite-type structure, whereas an A cation radius <0.90Å will favor the monoclinic wolframite-type structure. X-ray diffraction analyses of these minerals have long been a challenge because they are composed of heavy atoms (Pb, Mo, and W) which dominate in scattering X-rays. This makes it challenging to precisely determine the atomic coordinates of oxygen, being a much lighter element with a weaker atomic scattering power. Therefore, in an effort to overcome the aforementioned obstacle, and to acquire accurate structural data for these minerals, this study uses synchrotron high resolution powder X-ray diffraction (HRPXRD). The natural wulfenite specimens analyzed so far in this study from various worldwide localities are very pure in composition, with all specimens being represented by the formula: Pb0.99- 5+ 6+ 6+ 6+ 1.00Mo0.99-1.00O4. -
2012 Bmc Auction Specimens
A SAMPLER OF SELECTED 2017 BMC AUCTION SPECIMENS (2017 Auction Date is Saturday, 21 January) Volume 3 3+ Hematite [Fe 2O3] & Quartz [SiO2] Locality Cleator Moor Iron Mines Cleator Moor West Cumberland Iron Field Cumbria, England, UK Size 13.5 x 9.5 x 7.0 cm 1498 g Donated by Stonetrust Hematite Crystal System: Trigonal Photograph by Mike Haritos Physical Properties Transparency: Subtranslucent to opaque Mohs hardness: 6.5 Density: approx 5.3 gm/cm3 Streak: Red Luster: Metalic Vanadinite [Pb5(VO4)3Cl] var. Endlichite Locality Erupción Mine (Ahumada Mine) Los Lamentos Mountains (Sierra de Los Lamentos) Mun. de Ahumada Chihuahua, Mexico Size 12.0 x 9.5 x 7.0 cm 1134 g Donated by Stonetrust Crystal System: Hexagonal Physical Properties Transparency: Subtranslucent to opaque Mohs hardness: 3.5-4 Photograph by Mike Haritos Density: 6.8 to 7.1 gm/cm3 Streak: Brownish yellow Endlichite, Pb5([V, As]O4)3Cl, is the arsenic rich Luster: Adamantine variety of vanadinite with arsenic atoms (As) substituting for some of the vanadium (V) 2+ Dolomite [CaMg(CO3)2] & Chalcopyrite [CuFe S2] Locality Picher Field Tri-State District Ottawa Co. Oklahoma, USA Size 19.0 x 14.5 x 6.0 cm 1892 g Consigned with Reserve by Stonetrust Dolomite Crystal System: Trigonal Physical Properties Photograph by Mike Haritos Transparency: Transparent, Translucent, Opaque Mohs hardness: 3.5 to 4 Density: 2.8 to 2.9 gm/cm3 Streak: White Luster: Vitreous Calcite [CaCO3] Locality Mexico Size 15.5 x 12.8 x 6.2 cm 1074 g Donated by Stonetrust Calcite Crystal System: Trigonal Physical Properties Transparency: Transparent, Translucent Mohs hardness: 3 Density: 2.71 gm/cm3 Streak: White Luster: Vitreous, Sub-Vitreous, Photograph by Mike Haritos Resinous, Waxy, Pearly Quartz [SiO2], var. -
Adsorption of RNA on Mineral Surfaces and Mineral Precipitates
Adsorption of RNA on mineral surfaces and mineral precipitates Elisa Biondi1,2, Yoshihiro Furukawa3, Jun Kawai4 and Steven A. Benner*1,2,5 Full Research Paper Open Access Address: Beilstein J. Org. Chem. 2017, 13, 393–404. 1Foundation for Applied Molecular Evolution, 13709 Progress doi:10.3762/bjoc.13.42 Boulevard, Alachua, FL, 32615, USA, 2Firebird Biomolecular Sciences LLC, 13709 Progress Boulevard, Alachua, FL, 32615, USA, Received: 23 November 2016 3Department of Earth Science, Tohoku University, 2 Chome-1-1 Accepted: 15 February 2017 Katahira, Aoba Ward, Sendai, Miyagi Prefecture 980-8577, Japan, Published: 01 March 2017 4Department of Material Science and Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama This article is part of the Thematic Series "From prebiotic chemistry to 240-8501, Japan and 5The Westheimer Institute for Science and molecular evolution". Technology, 13709 Progress Boulevard, Alachua, FL, 32615, USA Guest Editor: L. Cronin Email: Steven A. Benner* - [email protected] © 2017 Biondi et al.; licensee Beilstein-Institut. License and terms: see end of document. * Corresponding author Keywords: carbonates; natural minerals; origins of life; RNA adsorption; synthetic minerals Abstract The prebiotic significance of laboratory experiments that study the interactions between oligomeric RNA and mineral species is difficult to know. Natural exemplars of specific minerals can differ widely depending on their provenance. While laboratory-gener- ated samples of synthetic minerals can have controlled compositions, they are often viewed as "unnatural". Here, we show how trends in the interaction of RNA with natural mineral specimens, synthetic mineral specimens, and co-precipitated pairs of synthe- tic minerals, can make a persuasive case that the observed interactions reflect the composition of the minerals themselves, rather than their being simply examples of large molecules associating nonspecifically with large surfaces. -
Mottramite Pbcu(VO4)(OH) C 2001-2005 Mineral Data Publishing, Version 1 Crystal Data: Orthorhombic
Mottramite PbCu(VO4)(OH) c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. As crystals, equant or dipyramidal {111}, prismatic [001] or [100], with {101}, {201}, many others, to 3 mm, in drusy crusts, botryoidal, usually granular to compact, massive. Physical Properties: Fracture: Small conchoidal to uneven. Tenacity: Brittle. Hardness = 3–3.5 D(meas.) = ∼5.9 D(calc.) = 6.187 Optical Properties: Transparent to nearly opaque. Color: Grass-green, olive-green, yellow- green, siskin-green, blackish brown, nearly black. Streak: Yellowish green. Luster: Greasy. Optical Class: Biaxial (–), rarely biaxial (+). Pleochroism: Weak to strong; X = Y = canary-yellow to greenish yellow; Z = brownish yellow. Orientation: X = c; Y = b; Z = a. Dispersion: r> v,strong; rarely r< v.α= 2.17(2) β = 2.26(2) γ = 2.32(2) 2V(meas.) = ∼73◦ Cell Data: Space Group: P nma. a = 7.667–7.730 b = 6.034–6.067 c = 9.278–9.332 Z=4 X-ray Powder Pattern: Mottram St. Andrew, England; close to descloizite. 3.24 (vvs), 5.07 (vs), 2.87 (vs), 2.68 (vs), 2.66 (vs), 2.59 (vs), 1.648 (vs) Chemistry: (1) (2) (1) (2) CrO3 0.50 ZnO 0.31 10.08 P2O5 0.24 PbO 55.64 55.30 As2O5 1.33 H2O 3.57 2.23 V2O5 21.21 22.53 insol. 0.17 CuO 17.05 9.86 Total 100.02 100.00 (1) Bisbee, Arizona, USA; average of three analyses. (2) Pb(Cu, Zn)(VO4)(OH) with Zn:Cu = 1:1. -
(Mnco3-Znco3) Solid-Solutions at 5~
The formation of rhodochrosite-smithsonite (MnCO3-ZnCO3) solid-solutions at 5~ MICHAEL E. BOTTCHER* Geochemical Institute, Georg-August-University, Goldschmidtstr.1, D-37077 G6ttingen, Germany Abstract MnxZn(l_x)CO3 solid-solutions were prepared at 5~ by precipitation from metal-beating bicarbonate solutions. The solids were identified by X-ray powder diffraction and infrared spectroscopy. Zn2+ ions substitute extensively for Mn2+ ions in the crystal lattice of anhydrous rhombohedral carbonates. Throughout the 24 h during which the experiments were conducted, the aqueous solutions remained undersaturated with respect to pure oxides, sulphates, hydroxides and hydroxysulphates. The solutions, however, were supersaturated with MnxZno_x)CO3 of any given composition. Besides the anhydrous rhombohedral carbonates, Zn4(OH)2(CO3)3.4H20 was precipitated from an aqueous solution with initially high Zn2+ concentration. The negative logarithm of the solubility product of Zn4(OH)2(CO3)3.4H20 was estimated theoretically to be 43.9 (25~ Remaining saturation with respect to Zn4(OH)z(CO3)3-4H20 was calculated accordingly. The suggestion is made that hydrated zinc hydroxycarbonate is metastable under the experimental conditions used here, but that it should transform into anhydrous carbonates. KEYwoems: rhodochrosite, smithsonite, solid-solutions, zinc hydroxycarbonate, synthesis. Introduction quantitative significance has probably previously been underestimated. However, although B6ttcher A nearly complete natural rhodochrosite-smithsonite et al. (1993) applied a tentative thermodynamic (MnCO3-ZnCO3) solid-solution series has been model to estimate the metal-activity ratios of the found in the oxidized zone of the ore body at aqueous solutions from which the Broken Hill Broken Hill, N.S.W., Australia (Birch, 1986; carbonates were precipitated, less is known on the B6ttcher et al., 1993; B6ttcher et al., in prep.). -
Geology and Mineralogy of the Ape.X Washington County, Utah
Geology and Mineralogy of the Ape.x Germanium-Gallium Mine, Washington County, Utah Geology and Mineralogy of the Apex Germanium-Gallium Mine, Washington County, Utah By LAWRENCE R. BERNSTEIN U.S. GEOLOGICAL SURVEY BULLETIN 1577 DEPARTMENT OF THE INTERIOR DONALD PAUL HODEL, Secretary U.S. GEOLOGICAL SURVEY Dallas L. Peck, Director UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1986 For sale by the Distribution Branch, Text Products Section U.S. Geological Survey 604 South Pickett St. Alexandria, VA 22304 Library of Congress Cataloging-in-Publication Data Bernstein, Lawrence R. Geology and mineralogy of the Apex Germanium Gallium mine, Washington County, Utah (U.S. Geological Survey Bulletin 1577) Bibliography: p. 9 Supt. of Docs. no.: I 19.3:1577 1. Mines and mineral resources-Utah-Washington County. 2. Mineralogy-Utah-Washington County. 3. Geology-Utah-Wasington County. I. Title. II. Series: United States. Geological Survey. Bulletin 1577. QE75.B9 no. 1577 557.3 s 85-600355 [TN24. U8] [553' .09792'48] CONTENTS Abstract 1 Introduction 1 Germanium and gallium 1 Apex Mine 1 Acknowledgments 3 Methods 3 Geologic setting 3 Regional geology 3 Local geology 3 Ore geology 4 Mineralogy 5 Primary ore 5 Supergene ore 5 Discussion and conclusions 7 Primary ore deposition 7. Supergene alteration 8 Implications 8 References 8 FIGURES 1. Map showing location of Apex Mine and generalized geology of surrounding region 2 2. Photograph showing main adit of Apex Mine and gently dipping beds of the Callville Limestone 3 3. Geologic map showing locations of Apex and Paymaster mines and Apex fault zone 4 4. Scanning electron photomicrograph showing plumbian jarosite crystals from the 1,601-m level, Apex Mine 6 TABLES 1. -
Descloizite Pbzn(VO4)(OH) C 2001-2005 Mineral Data Publishing, Version 1
Descloizite PbZn(VO4)(OH) c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic. Point Group: 2/m 2/m 2/m. As crystals, equant or pyramidal {111}, prismatic [001] or [100], or tabular {100}, with {101}, {201}, many others, rarely skeletal, to 5 cm, commonly in drusy crusts, stalactitic or botryoidal, coarsely fibrous, granular to compact, massive. Physical Properties: Fracture: Small conchoidal to uneven. Tenacity: Brittle. Hardness = 3–3.5 D(meas.) = ∼6.2 D(calc.) = 6.202 Optical Properties: Transparent to nearly opaque. Color: Brownish red, red-orange, reddish brown to blackish brown, nearly black. Streak: Orange to brownish red. Luster: Greasy. Optical Class: Biaxial (–), rarely biaxial (+). Pleochroism: Weak to strong; X = Y = canary-yellow to greenish yellow; Z = brownish yellow. Orientation: X = c; Y = b; Z = a. Dispersion: r> v,strong; rarely r< v.α= 2.185(10) β = 2.265(10) γ = 2.35(10) 2V(meas.) = ∼90◦ Cell Data: Space Group: P nma. a = 7.593 b = 6.057 c = 9.416 Z = 4 X-ray Powder Pattern: Venus mine, [El Guaico district, C´ordobaProvince,] Argentina; close to mottramite. 3.23 (vvs), 5.12 (vs), 2.90 (vs), 2.69 (vsb), 2.62 (vsb), 1.652 (vs), 4.25 (s) Chemistry: (1) (2) (1) (2) SiO2 0.02 ZnO 19.21 10.08 As2O5 0.00 PbO 55.47 55.30 +350◦ V2O5 22.76 22.53 H2O 2.17 −350◦ FeO trace H2O 0.02 MnO trace H2O 2.23 CuO 0.56 9.86 Total 100.21 100.00 (1) Abenab, Namibia. -
The Mineralogy of Warsaw Formation Geodes
Proceedings of the Iowa Academy of Science Volume 66 Annual Issue Article 47 1959 The Mineralogy of Warsaw Formation Geodes Richard B. Tripp U.S. Geological Survey Let us know how access to this document benefits ouy Copyright ©1959 Iowa Academy of Science, Inc. Follow this and additional works at: https://scholarworks.uni.edu/pias Recommended Citation Tripp, Richard B. (1959) "The Mineralogy of Warsaw Formation Geodes," Proceedings of the Iowa Academy of Science, 66(1), 350-356. Available at: https://scholarworks.uni.edu/pias/vol66/iss1/47 This Research is brought to you for free and open access by the Iowa Academy of Science at UNI ScholarWorks. It has been accepted for inclusion in Proceedings of the Iowa Academy of Science by an authorized editor of UNI ScholarWorks. For more information, please contact [email protected]. Tripp: The Mineralogy of Warsaw Formation Geodes The Mineralogy of Warsaw Formation Geodes By RICHARD B. TRIPP Abstract. Mineral inclusions found in geodes from the Warsaw formation of southeastern Iowa are described. The following are reported as present: quartz, chalcedony, calcite, dolomite, ankerite, barite, aragonite, smithsonite, iron pyrite, marcasite, chalcopyrite, sphalerite, sulfur, goethite, hematite, pyrolusite, kaolinite, malachite, selenite, and limonite. Tenorite and chalcocite have been tentatively identified. The geodes found in the Warsaw formation of southeastern Iowa and adjacent areas present a number of interesting mineralogical in clusions, many not previously described in the literature. For the past ten years an intensive study has been made of the mineral inclu sions found in geodes collected from thirty-two different exposures in the Keokuk, Iowa, area.