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2 edition of Geochemistry of uranium in apatite and phosphorite found in the catalog.

Geochemistry of uranium in apatite and phosphorite

Z. S. Altschuler

Geochemistry of uranium in apatite and phosphorite

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  • 27 Currently reading

Published by U.S. Govt. Print. Off. in Washington .
Written in English

    Subjects:
  • Uranium.,
  • Apatite.

  • Edition Notes

    Statementby Z. S. Altschuler, R. S. Clarke, Jr., and E. J. Young.
    SeriesShorter contributions to general geology, Geological Survey professional paper 314-D, Shorter contributions to general geology., Geological Survey professional paper ;, 314-D.
    ContributionsClarke, Roy S., joint author., Young, Edward J. 1923- joint author., U.S. Atomic Energy Commission.
    Classifications
    LC ClassificationsQE75 .P9 no. 314-D
    The Physical Object
    Paginationiv, 45-90 p.
    Number of Pages90
    ID Numbers
    Open LibraryOL5168382M
    LC Control Number74605576

    Characterization of fluor-chlorapatites by electron probe microanalysis with a focus on time-dependent intensity variation of halogens Beth Goldoff,1,* James d. WeBster,1 and daniel 2e. harlov 1Department of Earth and Planetary Sciences, American Museum of Natural History, Central Park West at 79th Street, New York, New York , by: apatite is smaller than in geologic apatites due to the limited number of available elements in the body. Among the substituting ions that are known and/or reported in bone and tooth mineral are F,Cl,Na+,K+,Fe2+,Zn2+,Sr2+,Mg2+, citrate, and carbonate [1–3,19,20]. Because apatite is a.


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Geochemistry of uranium in apatite and phosphorite by Z. S. Altschuler Download PDF EPUB FB2

Additional Physical Format: Online version: Altschuler, Z. (Zalman Samuel), Geochemistry of uranium in apatite and phosphorite (OCoLC) Geochemistry of uranium in apatite and phosphorite (DLC) (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Internet Resource, Computer File: All Authors / Contributors.

THE GEOCHEMISTRY OF URANIUM IN APATITE AND PHOSPHORITE By Z. ALTSCHULEK, K. CLAKKE, JR., and E. YOUNG ABSTRACT Apatite contains only traces of uranium, yet as apatite is a minor constituent in most rocks and the major constituent of a few very large deposits, it accounts, paradoxically, for bothCited by: Geochemistry of Uranium in Phosphorites and Black Shales of the Phosphoria Formation GEOLOGICAL SURVEY BULLETIN D This report concerns work done on behalf of the U.S.

Atomic Energy Commission apatite, uranium, and excess fluorine contents of apatite____ Cited by: turning points that, in the course of a few years, have made this The uranium minerals that today are at the centre of worldwide metal an essential raw material.

attention were unknown untilwhen Wagsfort found a First, the destructive property of fission reactions made uranium a metal of fundamental strategic importance, increas­ pitchblende sample in 10hanngeorgenstadt. Major phosphorite deposits of the world with ore reserves of approximately Gt (or 58 Gt P 2 O 5) contain up to 19 Mt of uranium.

Uranium is present in phosphorites in the tetra- and hexavalent, i.e., U(IV) and U(VI) forms, and their ratio is highly by: Manganese and chromium are present in the same general concentration as uranium. Iron, which as Fe(III) is used in analytical work to oxidize TJ(IV), is also present in much larger amounts than the uranium.

In the Determination of the oxidation state of uranium in apatite and phosphorite deposits Table by: Description Table of Contents List of Volumes Volume Uranium: Mineralogy, Geochemistry, and the Environment Peter C.

Burns and Robert Finch, editors i-xvi + pages. ISBN ; ISBN13 @article{osti_, title = {Uranium geochemistry and fission-track mapping of phosphorites, Zefa field, Israel}, author = {Avital, Y and Kolodny, Y and Starinsky, A}, abstractNote = {Uranium concentrations and oxidation states were determined on 45 samples from the Campanian Zefa phosphorite field Geochemistry of uranium in apatite and phosphorite book southern Israel.

Optically anisotropic bone fragments have the lowest. Sedimentary phosphorites contain low concentrations of uranium in fine-grained apatite. Uranium of this type is considered as an unconventional resource.

Uraniferous phosphorites are associated with sedimentary carbonates of the Paleoproterozoic sequences. More than 20 occurrences of uraniferous phosphorite and phosphatic rocks are known in.

Geochemistry of uranium in phosphorites and black shales of the Phosphoria formation: USGS Bulletin D Paperback – J by Richard Porter Sheldon (Author) See all formats and editions Hide other formats and Author: Richard Porter Sheldon. The formation of uranium valence states between 2+ and 6+.

In minerals, only the valences Geochemistry of uranium in apatite and phosphorite book, 5+ and 6+ are known (Wedepohl, ). The present chapter deals the geochemistry of Uranium in rocks, soils, plants and water.

Lithogeochemistry of Uranium: Uranium occurs in a variety of minerals but characteristically is concentrated in a fewFile Size: 1MB. Arsenic in phosphorite and apatite; a reply S. Stow. Stow Search for other works by this author on: GSW Related Book Content. Base and precious metal stream-sediment geochemistry related to mafic-ultramafic bodies in the Alabama and Author: S.

Stow. Apatite is a group of phosphate minerals, usually referring to hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of OH −, F − and Cl − ions, respectively, in the formula of the admixture of the three most common endmembers is written as Ca 10 (PO 4) 6 (OH,F,Cl) 2, and the crystal unit cell formulae of the individual minerals are written as Ca 10 Category: Phosphate mineral.

The Geology and Geochemistry of Uranium and Thorium Deposits Description Despite the lack of interest in uranium as a commodity during the past few years and the loss of expertise during the previous downturn beginning 30 years ago, new ideas and technologies developed over the past 7 years have resulted in an enhanced understanding of the.

Uranium is a silvery-gray metallic weakly radioactive chemical has the chemical symbol U and atomic number The most common isotopes in natural uranium are U (%) and U (%). All uranium isotopes present in natural uranium are radioactive and fissionable, and U is fissile (will support a neutron-mediated chain reaction).

Uranium, thorium, and. Rare earth elements and uranium geochemistry in the Al-Kora Phosphorite province, Late Cretaceous, northwestern Jordan Article (PDF Available) in Arabian Journal of Geosciences 9(3).

THE GEOCHEMISTRY OF URANIUM IN APATITE AND PHOSPHORITE follows: Caio(PO4,COa)6F Thus excess fluorine (or hydroxyl) serves to balance the charge difference created by the substition of (COs)-2 for (PO4) The chemical and spectrographic analyses in tables 2 and 3 illustrate the chemical nature of the sedimentary carbonate-fluorapatites.

PDF | On Apr 1,K F Khan and others published Geochemistry of phosphorite deposits around Hirapur-Mardeora area in Chhatarpur and Sagar Districts, Madhya Pradesh, India |.

• Tabular sandstone uranium deposits – Mined by conventional methods (underground, open pit) – 1 ft zones hard to impossible to mine, 4 ft better • Redistributed or roll-type uranium deposits – Mined by conventional methods (underground, open pit) – Mined by in situ recovery (ISR) methods • Below the water table • Permeable.

The source of apatite need not be biogenic: it can also be sourced from igneous or hydrothermal activity occurring on the ocean floor, or derived as clastic material from the continents.

The end result, is the deposition of apatite as phosphorites. An important property of apatite is that it can accommodate some uranium. Apatite is a minor but ubiquitous mineral in most igneous rocks.

Although the modal proportion of apatite in common rocks is generally low, it can reach high concentrations in enclaves, cumulates, and other rocks of low abundance (i.e., rocks that constitute a small volume of the crust and mantle; e.g., nelsonites).Cited by: Most widespread minerals containing Uranium; This list of minerals containing Uranium is built from the locality database.

This is based on the number of localities entered for mineral species and is therefore slanted towards minerals interesting to collectors with less coverage of common rock-forming-minerals so it does not give an undistorted distribution of.

"Apatite" is a field term for unidentified calcium phosphate members of the apatite group. Most "apatite" is fluorapatite, whereas hydroxylapatite is much less common and chlorapatite is very rare. "Apatite" crystals are short to long hexagonal prisms [], with {10 1 0} and {10 1 1} dominant; also thick tabular {}, frequently in the crystals of hydrothermal origin in.

Geologic and mineralogic evidence indicate that the uranium present in apatite may proxy for calcium in the mineral structure as U(IV). An experimental investigation was conducted and chemical evidence was obtained that establishes the presence of U(IV) in apatite.

The following analytical procedure was developed for the determination of U(IV). Introduction to U-series Geochemistry by Bernard Bourdon, Simon Turner, Gideon M.

Henderson and Craig C. Lundstrom, p. 1 - 22 Chapter 2. Techniques for Measuring Uranium-series Nuclides: by Steven J. Goldstein and Claudine H.

Stirling, p. 23 - 58 Chapter 3. Mineral-Melt Partitioning of Uranium, Thorium and Their Daughters. appears to have been successful, the outcome of the apatite formation of the test was more limited. Two separate overarching issues impact the efficacy of apatite remediation for uranium sequestration within the Area: 1) the efficacy of apatite for sequestering uranium under the present geochemical and.

Apatite is the most common phosphate mineral, and is the main source of the phosphorus required by plants. The bones and teeth of most animals, including humans, are composed of calcium phosphate, which is the same material as Apatite.

(These biological Apatites are almost exclusively the Hydroxylapatite type.) Chemical Formula. T his chapter contains a brief description of the wide variety of geological settings that host uranium deposits worldwide, and then a more specific description of known uranium occurrences in the Commonwealth of Virginia.

This latter section also notes the exploration status and a first-order indication of the exploitation potential of existing uranium resources in Virginia. Purchase Structure and Chemistry of the Apatites and Other Calcium Orthophosphates, Volume 18 - 1st Edition. Print Book & E-Book.

ISBNThe rate of decay of uranium is a time-dependent reaction; therefore, the number of fission tracks in a crystal can be used to measure the time since the formation of the apatite grains.

This is the basis for apatite fission track analysis. Measuring maturity with apatite fission tracksLink: Web page. the geochemistry of uranium in apatite and phosphorite by z. Uranocircite is a uranium mineral with the chemical A White House task force is recommending that President Donald Trump direct the federal government buy more uranium from domestic producers, according to two people familiar with the matter.

U-series Geochemistry - Table of Contents 3 Mineral-Melt Partitioning of Uranium, Thorium and Their Daughters Jonathan Blundy and Bernard Wood 1. INTRODUCTION r.

59 2. PARTITIONING PRELIMINARIES 60 3. SOURCES OF PARTITIONING DATA 61 4. THE IMPORTANCE OF PARTITIONING IN INTERPRETING U-SERIES DATA 62 5. THE LATTICE. URANIUM ORE MINERALS Uranium can be found in a large number of minerals.

X-ray diffraction and SEM are usually used to identify U minerals and the associated alteration products. The most common economic minerals are listed below: 1) Oxides: Uraninite (crystalline UO) Pitchblende {an amorphous, poorly crystalline mix of uranium oxides.

Radioactivity and the 20th century / Rodney C. Ewing -- The crystal chemistry of uranium / Peter C. Burns Systematics and paragenesis of uranium minerals / Robert Finch & Takashi Murakami Stable isotope geochemistry of uranium deposits / Mostafa Fayek & T.

Kurtis Kyser. Apatite II to Remediate Soil or Groundwater Containing Uranium or Plutonium James Conca, Ph.D., LANL Judith Wright, Ph.D., PIMS NW, Inc. Introduction Uranium (U) and plutonium (Pu) are the two actinide elements most likely to occur as contaminants in the environment.

Pu will occur only in a few localized areas associated with weapons production andFile Size: KB. Elves Matiolo, Ligia Gonzaga, and Ana Luiza Guedes, "An Alternative Flotation Process for Apatite Concentration of the Itataia Carbonaceous Uranium-Phosphate Ore" in "Beneficiation of Phosphates VII", P.

Zhang, FIPR; J. Miller, Univ. of Utah; L. Leal, Univ. Uranium Geochemistry in Vadose Zone and Aquifer Sediments from the Area Uranium Plume Editor J. Zachara Collaborators J. Davis C. Liu J. McKinley N. Qafoku D.

Wellman S. Yabusaki July Prepared for the U.S. Department. The book is separated into five chapters: Chapter 1: A summary of world uranium resources and of uranium production. Chapter 2: Uranium geochemistry, in a manner intended to provide sufficient basic information needed within the scope of the work.

Chapter 3: The principal aspects on the genesis of uranium, addressed synoptically. In the apatite He system, for particular types of thermal histories (e.g., protracted cooling or reheating to partial‐retention‐zone temperatures long after initial cooling), this phenomenon manifests as positive correlations between He age and effective uranium (eU), a measurement that combines a crystal's U and Th concentrations, scaled Cited by:.

Archean continents were the nuclei for crustal growth and large volumes of continental crust appear to have been produced during the Archean. Much of the preserved Archean crust is of tonalite-trondhjemite-granodiorite (TTG) composition and it is argued that this made up the bulk of Earth’s earliest crust.

Other models involve a bulk mafic crust that was very different to the Author: Robert Bernard Emo.Abstract. Ores from the Araxa area, Minas Gerais, Brazil were analyzed.

The samples analyzed could be considered as Mixtures of pyrochlores, phosphorite and apatite; they contained titanium, niobium, tantalum, phosphorus and calcium, with small quantities of iron, manganese, uranium. rare earths (cerium), and thorium. Uranium Ore Minerals Primary ore mineral The major primary ore mineral is uraninite or pitchblende (UO2 + UO3, nominally U3O8), though a range of other uranium minerals is found in particular deposits.

These include Carnotite (uranium potassium vanadate), Davidite-brannerite-absite type uranium titanates, and Euxenite-fergusonite-samarskite.