DOCSLIB.ORG

Arc-Related Porphyry Molybdenum Deposit Model

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Arc-Related Porphyry Molybdenum Deposit Model Arc-Related Porphyry Molybdenum Deposit Model Chapter D of Mineral Deposit Models for Resource Assessment 0 1 CENTIMETER 0 0.5 INCH Scientific Investigations Report 2010–5070–D U.S. Department of the Interior U.S. Geological Survey COVER: Quartz-molybdenite vein cutting through potassically altered granite. Photograph by Ryan D. Taylor, U.S. Geological Survey. Arc-Related Porphyry Molybdenum Deposit Model By Ryan D. Taylor, Jane M. Hammarstrom, Nadine M. Piatak, and Robert R. Seal, II Chapter D of Mineral Deposit Model for Resource Assessment Scientific Investigations Report 2010–5070–D U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior KEN SALAZAR, Secretary U.S. Geological Survey Marcia K. McNutt, Director U.S. Geological Survey, Reston, Virginia: 2012 For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment, visit http://www.usgs.gov or call 1–888–ASK–USGS. For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprod To order this and other USGS information products, visit http://store.usgs.gov Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested citation: Taylor, R.D., Hammarstrom, J.M., Piatak, N.M., and Seal, R.R. II, 2012, Arc-related porphyry molybdenum deposit model, chap. D of Mineral deposit models for resource assessment: U.S. Geological Survey Scientific Investigations Report 2010–5070–D, 64 p. iii Contents Abstract ...........................................................................................................................................................1 Introduction.....................................................................................................................................................1 Deposit Type and Associated Commodities ..............................................................................................2 Name ......................................................................................................................................................2 Synonyms ...............................................................................................................................................2 Brief Description ...................................................................................................................................2 Associated Deposit Types ...................................................................................................................3 Primary Commodities ...........................................................................................................................3 Byproduct Commodities ......................................................................................................................3 Trace Constituents ................................................................................................................................3 Example Deposits..................................................................................................................................3 Historical Evolution of Descriptive and Genetic Knowledge and Concepts ........................................6 Regional Environment ...................................................................................................................................7 Geotectonic Environment ....................................................................................................................7 Temporal (Secular) Relations ..............................................................................................................7 Duration of Magmatic-Hydrothermal System ..................................................................................8 Relations to Structures ........................................................................................................................9 Relations to Igneous Rocks ...............................................................................................................10 Relations to Sedimentary Rocks ......................................................................................................10 Relations to Metamorphic Rocks .....................................................................................................10 Physical Description of Deposit ................................................................................................................11 Dimensions in Plan View ...................................................................................................................11 Size of Hydrothermal System Relative to Extent of Economically Mineralized Rock ..............11 Vertical Extent .....................................................................................................................................11 Form/Shape ..........................................................................................................................................11 Host Rocks ...........................................................................................................................................11 Structural Setting(s) and Controls ...................................................................................................11 Hypogene Ore Characteristics ..................................................................................................................12 Mineralogy ...........................................................................................................................................12 Mineral Assemblages ........................................................................................................................12 Paragenesis .........................................................................................................................................12 Zoning Patterns ...................................................................................................................................13 Ore Textures .........................................................................................................................................13 Grain Size .............................................................................................................................................14 Hypogene Gangue Characteristics ...........................................................................................................15 Mineralogy ...........................................................................................................................................15 Mineral Assemblages ........................................................................................................................15 Paragenesis .........................................................................................................................................15 Zoning Patterns ...................................................................................................................................15 Textures, Structures, and Grain Size ...............................................................................................15 iv Hydrothermal Alteration .............................................................................................................................16 Relations Between Alteration, Gangue, and Ore ..........................................................................16 Mineralogy ...........................................................................................................................................16 Mineral Assemblages ........................................................................................................................16 Lateral and Vertical Dimensions ......................................................................................................17 Selvages ...............................................................................................................................................17 Rock Matrix Alteration .......................................................................................................................18 Textures ................................................................................................................................................18 Zoning Patterns ...................................................................................................................................19 Supergene Ore Characteristics .................................................................................................................19 Supergene Gangue Characteristics .........................................................................................................19 Weathering/Supergene Processes ..........................................................................................................20 Geophysical Characteristics ......................................................................................................................20 Magnetic, Gravity, and Electrical Signatures ................................................................................21
Load more

Recommended publications
  • 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.
    [Show full text]
  • 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.
    [Show full text]
  • Porphyry and Other Molybdenum Deposits of Idaho and Montana
    Porphyry and Other Molybdenum Deposits of Idaho and Montana Joseph E. Worthington Idaho Geological Survey University of Idaho Technical Report 07-3 Moscow, Idaho ISBN 1-55765-515-4 CONTENTS Introduction ................................................................................................ 1 Molybdenum Vein Deposits ...................................................................... 2 Tertiary Molybdenum Deposits ................................................................. 2 Little Falls—1 ............................................................................. 3 CUMO—2 .................................................................................. 3 Red Mountain Prospect—45 ...................................................... 3 Rocky Bar District—43 .............................................................. 3 West Eight Mile—37 .................................................................. 3 Devil’s Creek Prospect—46 ....................................................... 3 Walton—8 .................................................................................. 4 Ima—3 ........................................................................................ 4 Liver Peak (a.k.a. Goat Creek)—4 ............................................. 4 Bald Butte—5 ............................................................................. 5 Big Ben—6 ................................................................................. 6 Emigrant Gulch—7 ...................................................................
    [Show full text]
  • 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%).
    [Show full text]
  • 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]
  • URANINITE Adjacent to Graphitic Slate
    discontinuous post-iron ore seams and disseminated particles in oxidized iron formation URANINITE adjacent to graphitic slate. It occurs in UO2 microscopic grains associated with pyrite, A widely distributed uranium mineral in granitic chalcopyrite, sphalerite, and galena. One pod pegmatites, veins, and unoxidized sandstone-type measured 12 mm across (James et al., 1968). At uranium deposits. “Pitchblende” is a synonym. the Buck mine, it is also found with the supergene Northern Peninsula. uranium minerals metatyuyamunite, meta-autunite, metatorbernite, and bassetite (Vickers, 1956b). Baraga County: 1. Big Eric’s Crossing, NW ¼ More recently discovered hydraulic breccias from NW ¼ section 35, T52N R30W: Uraninite is near the Sherwood mine have a matrix composed presumed to be the source of radioactivity in a primarily of sphalerite, chalcopyrite, and uraninite hematite-stained fracture in granite exposed (Lassin, 1998). approximately 100 meters north of the bridge at Big Eric’s Crossing on the Huron River Marquette County: Francis mine, section 27, (Kalliokoski, 1976). 2. Huron River prospect, T45N, R26W: “Pitchblende” has been reported NW ¼ NW ¼ section 1, T51N, R30W: from the Francis mine by Kalliokoski (1976). “Pitchblende” occurs with calcite, metatyu- Ontonagon County: Bergland (Burke) yamunite, and volborthite in a brecciated quartz prospect, NW ¼ SW ¼ section 35, T49N, R42W: vein (thrust fault) exposed in the bank of the With uranophane (q.v.) in fractures in altered Huron River (east branch), near and upstream felsite (Beroni and Patterson, 1956; Kalliokoski, from the falls (Kalliokoski, 1976). 1976). Dickinson County: 1. North edge of Felch FROM: Robinson, G.W., 2004 Mineralogy of Trough: Uraninite (“pitchblende”)-carbonate Michigan by E.W.
    [Show full text]
  • Photosynthesis & the Rise of Atmospheric O
    N N Mg H N N PhotosynthesisPhotosynthesis && thethe RiseRise ofof CH3 H H O O COOCH3 O AtmosphericAtmospheric OO22 H3CHHH3C OCEAN 355 - Fall 2008 CO2 + H2O <---> CH2O + O2 Lecture Notes #5 “The concentration of oxygen in the atmosphere is a kinetic balance between the rates of processes producing oxygen and the rates of processes consuming it.”** Organic Organic Pyrite burial Oxidation of carbon burial carbon & mantle gases weathering weathering We will discuss those processes & explore the geologic record for evidence of their influence on atmospheric O2 levels through time. Bearing in mind that “A sparse geologic record, combined with uncertainties as to its interpretation, yields only a fragmentary and imprecise reading of atmospheric oxygen evolution.” * * D.E. Canfield (2005) Ann. Rev. Earth Planet. Sci Vol. 33: 1-36. Overview of The Rise of Atmospheric Oxygen • Photosynthesis by cyanobacteria began ~3.5 Ga CO2 + H2O ---> CH2O + O2 • No evidence for atmospheric O2 before ~2.4 Ga • Reduced gases in atmosphere & reduced crustal rocks consume O2 produced during 1.2 Gyr • Hydrogen escape irreversibly oxidizes atmosphere • Mantle dynamics & redox evolution reduce O2 sink over time • Geologic & geochemical evidence for O2 : Oxidized Fe & Mn mineral deposits Detrital uraninite & pyrite Paleosols Redbeds Sulfur & Iron isotopes Eukaryotes • Conclusion: Rapid rise of free O2 2.4-2.2 Ga Geologic, Geocehmical & Biologic Evidence for Rise of Atmospheric Oxygen Kalahari Manganese Member, Hotazel Fm., Manatwan Mine, S. Africa Oxidation (+2 to +4)
    [Show full text]
  • A Critical Review of Suitable Methods to Eliminate Mercury in Indonesia's Artisanal Gold Mining
    [Type here] The University of British Columbia Norman B. Keevil Institute of Mining Engineering 6350 Stores Rd., Vancouver, BC, Canada, V6T 1Z4 ph: (604) 8224332, fax: (604) 8225599; [email protected] Report to UNDP Indonesia A Critical Review of Suitable Methods to Eliminate Mercury in Indonesia’s Artisanal Gold Mining: Co-existence is the Solution Marcello M. Veiga, PhD, PEng Professor For UNDP - United Nations Development Programme, Indonesia − March 2020 – A Critical Review of Suitable Methods to Eliminate Mercury in Indonesia’s AGM i Report to UNDP, March 2020, by Marcello M. Veiga _____________________________________________________________________________________ Table of Contents SUMMARY ...................................................................................................................................................... 1 1. MERCURY POLLUTION FROM ARTISANAL GOLD MINERS ..................................................................... 2 1.1. Some Definitions ............................................................................................................................ 2 1.2. Mercury in AGM in Indonesia ........................................................................................................ 3 1.3. Summary of the Main Problems of Mercury in AGM in Indonesia ............................................... 7 2. SOLUTIONS TRIED TO REDUCE/ELIMINATE MERCURY .......................................................................... 8 2.1. Environmental and Health Approach ...........................................................................................
    [Show full text]
  • Occurrence and Extraction of Metals MODULE - 6 Chemistry of Elements
    Occurrence and Extraction of Metals MODULE - 6 Chemistry of Elements 16 Notes OCCURRENCE AND EXTRACTION OF METALS Metals and their alloys are extensively used in our day-to-day life. They are used for making machines, railways, motor vehicles, bridges, buildings, agricultural tools, aircrafts, ships etc. Therefore, production of a variety of metals in large quantities is necessary for the economic growth of a country. Only a few metals such as gold, silver, mercury etc. occur in free state in nature. Most of the other metals, however, occur in the earth's crust in the combined form, i.e., as compounds with different anions such as oxides, sulphides, halides etc. In view of this, the study of recovery of metals from their ores is very important. In this lesson, you shall learn about some of the processes of extraction of metals from their ores, called metallurgical processes. OBJECTIVES After reading this lesson, you will be able to : z differentiate between minerals and ores; z recall the occurrence of metals in native form and in combined form as oxides, sulphides, carbonates and chlorides; z list the names and formulae of some common ores of Na, Al, Sn, Pb ,Ti, Fe, Cu, Ag and Zn; z list the occurrence of minerals of different metals in India; z list different steps involved in the extraction of metals; * An alloy is a material consisting of two or more metals, or a metal and a non-metal. For example, brass is an alloy of copper and zinc; steel is an alloy of iron and carbon.
    [Show full text]
  • Iidentilica2tion and Occurrence of Uranium and Vanadium Identification and Occurrence of Uranium and Vanadium Minerals from the Colorado Plateaus
    IIdentilica2tion and occurrence of uranium and Vanadium Identification and Occurrence of Uranium and Vanadium Minerals From the Colorado Plateaus c By A. D. WEEKS and M. E. THOMPSON A CONTRIBUTION TO THE GEOLOGY OF URANIUM GEOLOGICAL S U R V E Y BULL E TIN 1009-B For jeld geologists and others having few laboratory facilities.- This report concerns work done on behalf of the U. S. Atomic Energy Commission and is published with the permission of the Commission. UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1954 UNITED STATES DEPARTMENT OF THE- INTERIOR FRED A. SEATON, Secretary GEOLOGICAL SURVEY Thomas B. Nolan. Director Reprint, 1957 For sale by the Superintendent of Documents, U. S. Government Printing Ofice Washington 25, D. C. - Price 25 cents (paper cover) CONTENTS Page 13 13 13 14 14 14 15 15 15 15 16 16 17 17 17 18 18 19 20 21 21 22 23 24 25 25 26 27 28 29 29 30 30 31 32 33 33 34 35 36 37 38 39 , 40 41 42 42 1v CONTENTS Page 46 47 48 49 50 50 51 52 53 54 54 55 56 56 57 58 58 59 62 TABLES TABLE1. Optical properties of uranium minerals ______________________ 44 2. List of mine and mining district names showing county and State________________________________________---------- 60 IDENTIFICATION AND OCCURRENCE OF URANIUM AND VANADIUM MINERALS FROM THE COLORADO PLATEAUS By A. D. WEEKSand M. E. THOMPSON ABSTRACT This report, designed to make available to field geologists and others informa- tion obtained in recent investigations by the Geological Survey on identification and occurrence of uranium minerals of the Colorado Plateaus, contains descrip- tions of the physical properties, X-ray data, and in some instances results of chem- ical and spectrographic analysis of 48 uranium arid vanadium minerals.
    [Show full text]
  • Supergene Mineralisation of the Boyongan Porphyry Copper-Gold Deposit, Surigao Del Norte, Philippines
    Supergene Mineralisation of the Boyongan Porphyry Copper-Gold Deposit, Surigao del Norte, Philippines by Allan Maglaya Ignacio B.Sc. Geology, National Institute of Geological Sciences University of the Philippines Thesis submitted in partial fulfilment of the requirements of the Masters of Economic Geology Degree Centre for Ore Deposit Research, University of Tasmania December, 2005 DECLARATION OF ORIGINALITY This thesis contains no material which has been accepted for a degree of diploma by the University of Tasmania or any other institution, except by way of background information and duly acknowledged in the thesis, and contains no previous material previously pub- lished or written by another person except where due acknowledgement is given. Allan Maglaya Ignacio 01 December 2005 _________________________ STATEMENT OF AUTHORITY OF ACCESS This thesis may not to be made available for loan or copying for 1.5 years following the date this statement was signed. Following that time, the thesis may be available for loan and lim- ited copying in accordance with Copyright Act 1968. Allan Maglaya Ignacio 01 December 2005 _________________________ TABLE OF CONTENTS Page (s) LIST OF FIGURES …………………………………………………….. i - iii LIST OF APPENDICES ………………………………………………… iv ACKNOWLEDGMENTS ………………………………………………. v ABSTRACT ……………………………………………………………... vi - vii 1.0 INTRODUCTION ………………………………………………………. 1 - 8 1.1 Introduction …………………………………………………………. 1 1.2 Aims and Objectives ……………………………………………….. 1 1.3 Methods Employed …………………………………………………. 2 1.4 Location and Accessibility …………………………………………. 3 1.5 Climate ……………………………………………………………... 5 1.6 Previous Work ……………………………………………………… 5 2.0 GEOLOGICAL SETTING ………………………………………………. 9 - 37 2.1 Introduction ………………………………………………………. 9 2.2 Regional Tectonics …………….…………………………………. 9 2.3 Regional and Local Stratigraphy ………………………………... 11 2.3.1 Basement (Cretaceous-Paleogene) ………………………. 11 2.3.2 Bacuag Formation (Oliogocene-Miocene) .……………..
    [Show full text]
  • Characterization of Bronze Casting in Insula 56, in Roman Aventicum
    CHARACTERIZATION OF BRONZE CASTING IN INSULA 56, IN ROMAN AVENTICUM by JESSICA WHEAT COOK (Under the Direction of Ervan Garrison) ABSTRACT This study characterizes metallurgical wastes (slag) recovered from a bronze workshop during excavations in 1997-1998 at the Roman provincial city of Aventicum, located in western Switzerland, then Germania Superior. Previous research has identified the workshop as one devoted to the production of large leaded bronze statuary. The slag assemblage analyzed in this study is unusual due to the absence of ceramic crucible fragments normally associated with the production of copper alloys. Instead, this workshop is hypothesized to have used iron crucibles. Electron Microprobe Analysis (EMPA) and X-Ray Diffraction (XRD) were used to analyze the chemical composition of the slags in contrast to previous bulk analysis studies. Modern metal casting methods were observed for analogues. The data show that the slag reached temperatures between 1350°-1400° C and chemical components indicated the use of sand and lime fluxes. Evidence of high temperatures is proposed as one chemical fingerprint that can be used to re-assess slag for the presence of iron crucibles in other Roman bronze workshops. INDEX WORDS: Aventicum, Classical Bronzes, EMPA, XRD, Roman Metallurgy CHARACTERIZATION OF BRONZE CASTING IN INSULA 56, IN ROMAN AVENTICUM by JESSICA WHEAT COOK AB History, Anthropology, The University of Georgia, 2003 A Thesis Submitted to the Graduate Faculty of The University of Georgia in Partial Fulfillment of the Requirements for the Degree MASTER OF SCIENCE ATHENS, GEORGIA 2008 © 2008 Jessica Wheat Cook All Rights Reserved CHARACTERIZATION OF BRONZE CASTING IN INSULA 56, IN ROMAN AVENTICUM by JESSICA WHEAT COOK Major Professor: Ervan Garrison Committee: Samuel Swanson Douglas Crowe Electronic Version Approved: Maureen Grasso Dean of the Graduate School The University of Georgia May 2008 iv ACKNOWLEDGMENTS The author wishes to thank Drs.
    [Show full text]