Mineralization at Le Pulec, Jersey, Channel Islands; No. 1 Lode
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Large-Scale Hydrothermal Zoning Reflectedin The
Canadian Mineralogist Vol. 27, pp. 383-400 (1989) LARGE-SCALE HYDROTHERMAL ZONING REFLECTED IN THE TETRAHEDRITE-FREIBERGITE SOLID SOLUTION, KENO HILL Ag-Pb-Zn DISTRICT, YUKON J.V. GREGORY LYNCH* Department of Geology, The University of Alberta, Edmonton, Alberta T6G 2E3 ABSTRACT en argent se distinguent aussi par une augmentation dans Ie nombre de cations dans leur formule chimique. Le rap- The zoned Keno Hill vein system of central Yukon port Sb/ As demeure uniformement eleve. extends laterally from a Cretaceous plutonic-metamorphic center and surrounding quartz-feldspar veins, to (Traduit par la Redaction) carbonate-Ag-Pb-Zn deposits, and further to peripheral veins having epithermal characteristics. Seven distinct Mots-cles: zonation hydrothermale, nappe aquifere, tetra- mineralogical zones are recognized, and the entire sequence edrite, solution solide, plutonique, epithermal, altera- is continuous from east to west in a 4O-km belt. The fault- tion, district de Keno Hill, Yukon. and fracture-controlled veins are stratabound to the brit- tle moderately dipping Keno Hill Quartzite unit, of Mis- INTRODUCTION sissippian age. The unit is graphitic and appears to have acted as a large-scale hydrothermal aquifer, restricting fluid This paper concerns the large-scale nature of the flow during minera1ization and" development of zoning predominantly to the lateral direction. Tetrahedrite is dis- Keno Hill hydrothermal system. A broad and con- tributed along a 25-km-Iong portion of the system, and is tinuous sequence of mineral zoning can be the principal ore mineral of Ag. Both Ag/Cu and Fe/Zn documented within veins distributed along an exten- values in tetrahedrite are highest at the outer extremity of sive portion of the Keno Hill Quartzite, which is the the system, where freibergite dominates over tetrahedrite; main host rock to the ore in the area. -
The Nature of Waste Associated with Closed Mines in England and Wales
The nature of waste associated with closed mines in England and Wales Minerals & Waste Programme Open Report OR/10/14 BRITISH GEOLOGICAL SURVEY MINERALS & WASTE PROGRAMME OPEN REPORT OR/10/14 The National Grid and other Ordnance Survey data are used with the permission of the The nature of waste associated Controller of Her Majesty’s Stationery Office. OS Topography © Crown with closed mines in England and Copyright. All rights reserved. BGS 100017897/2010 Wales Keywords Abandoned mine waste facilities; Palumbo-Roe, B and Colman, T England and Wales; mineral deposits; environmental impact; Contributor/editor European Mine Waste Directive. Cameron, D G, Linley, K and Gunn, A G Front cover Graiggoch Mine (SN 7040 7410), Ceredigion, Wales. Bibliographical reference Palumbo-Roe, B and Colman, T with contributions from Cameron, D G, Linley, K and Gunn, A G. 2010. The nature of waste associated with closed mines in England and Wales. British Geological Survey Open Report, OR/10/14. 98pp. Copyright in materials derived from the British Geological Survey’s work is owned by the Natural Environment Research Council (NERC) and the Environment Agency that commissioned the work. You may not copy or adapt this publication without first obtaining permission. Contact the BGS Intellectual Property Rights Section, British Geological Survey, Keyworth, e-mail [email protected]. You may quote extracts of a reasonable length without prior permission, provided a full acknowledgement is given of the source of the extract. The views and statements expressed in this report are those of the authors alone and do not necessarily represent the views of the Environment Agency. -
New Mineral Names*,†
American Mineralogist, Volume 100, pages 1649–1654, 2015 New Mineral Names*,† DMITRIY I. BELAKOVSKIY1 AND OLIVIER C. GAGNE2 1Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18 korp. 2, Moscow 119071, Russia 2Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada IN THIS ISSUE This New Mineral Names has entries for 10 new minerals, including debattistiite, evdokimovite, ferdowsiite, karpovite, kolskyite, markhininite, protochabournéite, raberite, shulamitite, and vendidaite. DEBATTISTIITE* for 795 unique I > 2σ(I) reflections] corner-sharing As(S,Te)3 A. Guastoni, L. Bindi, and F. Nestola (2012) Debattistiite, pyramids form three-membered distorted rings linked by Ag atoms in triangular or distorted tetrahedral coordination. Certain Ag9Hg0.5As6S12Te2, a new Te-bearing sulfosalt from Len- genbach quarry, Binn valley, Switzerland: description and features of that linkage are similar to those in the structures of crystal structure. Mineralogical Magazine, 76(3), 743–750. trechmannite and minerals of pearceite–polybasite group. Of the seven anion positions, one is almost fully occupied by Te (Te0.93S0.07). The Hg atom is in a nearly perfect linear coordination Debattistiite (IMA 2011-098), ideally Ag9Hg0.5As6S12Te2, is a new mineral discovered in the famous for Pb-Cu-Ag-As-Tl with two Te/S atoms. One of five Ag sites and Hg site, which are bearing sulfosalts Lengenbach quarry in the Binn Valley, Valais, very close (separation 1.137 Å), are partially occupied (50%). Switzerland. Debattistiite has been identified in two specimens Thus there is a statistical distribution (50:50) between Hg(Te,S)2 from zone 1 of the quarry in cavities in dolomitic marble with and AgS2(Te,S)2 polyhedra in the structure. -
SEG Bratislava, Field Trip Report Location: Mitrovica, Trepca Mining Region, Kosovo in Cooperation with Assoc
SEG Bratislava, Field trip report Location: Mitrovica, Trepca mining region, Kosovo In cooperation with Assoc. Prof. Jaroslav Prseek PhD. (University of Science and Technologyk Kraeow) we have sucessfully organized 4-day field trip dedicated to important deposits in Kosovo. Eight SEG members were involved in this trip led by Tomás Klučiar and Peter Varga. During these four days we have visited Pb-Zn deposits (Stan Tergk Artana and Drazhnje)k and Ni-laterite deposits in Glavica. First day our group travelled 12 hours through Hungaryk Sloveniak Serbia to Kosovok where we have accomodated. On second day our group visited the mine in Trepča region – Stan Tergk located near Stari Trg village in the Trepča valleyk about 8 em east of Kosovsea Mitrovica. This is the central mine of the Trepča complex. Mining at Trepca region is documented since the late Middle Ages. In the 20th centuryk the mine was closed during the Kosovo war of 1998-99. The two smelters were destroyed and the mine completely floodedk after Kosovo war the mine was reopened in 2005. Main deposits of mine is Pb-Zn-Ag searn hosted by recrystallized limestone of Upper Triassic age. The deposit was formed during two distinct mineralization stages: an early prograde closed-system and a later retrograde open-system stage. The prograde mineralisation consists mainly of clinopyroxenesk the retrograde mineralisation comprises ilvaitek magnetitek arsenopyritek pyrrhotitek marcasitek pyritek quartz and various carbonates. The open-system character is related to phreatomagmatic explosion and formation of a breccia. The principal ore minerals were deposited from a moderately saline Ca-Na chloride fluid at around 350°C. -
Silver Enrichment in the San Juan Mountains, Colorado
SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO. By EDSON S. BASTIN. INTRODUCTION. The following report forms part of a topical study of the enrich ment of silver ores begun by the writer under the auspices of the United States Geological Survey in 1913. Two reports embodying the results obtained at Tonopah, Nev.,1 and at the Comstock lode, Virginia City, Nev.,2 have previously been published. It was recognized in advance that a topical study carried on by a single investigator in many districts must of necessity be less com prehensive than the results gleaned more slowly by many investi gators in the course of regional surveys of the usual types; on the other hand the advances made in the study of a particular topic in one district would aid in the study of the same topic in the next. In particular it was desired to apply methods of microscopic study of polished specimens to the ores of many camps that had been rich silver producers but had not been studied geologically since such methods of study were perfected. If the results here reported appear to be fragmentary and to lack completeness according to the standards of a regional report, it must be remembered that for each district only such information could be used as was readily obtainable in the course of a very brief field visit. The results in so far as they show a primary origin for the silver minerals in many ores appear amply to justify the work in the encouragement which they offer to deep mining, irrespective of more purely scientific results. -
Solution Deposition of a Bournonite Cupbsbs3 Semiconductor Thin Film from the Dissolution of Bulk Materials with a Thiol-Amine Sol- Vent Mixture Kristopher M
Solution Deposition of a Bournonite CuPbSbS3 Semiconductor Thin Film from the Dissolution of Bulk Materials with a Thiol-Amine Sol- vent Mixture Kristopher M. Koskela, Brent C. Melot, and Richard L. Brutchey* Department of Chemistry, University of Southern California, Los Angeles, CA 90089, United States ABSTRACT: There is considerable interest in the exploration of new solar absorbers that are environmentally stable, absorb through the visible, and possess a polar crystal structure. Bournonite CuPbSbS3 is a naturally occurring sulfosalt mineral that crys- tallizes in the non-centrosymmetric Pmn21 space group and possesses an optimal band gap for single junction solar cells; however, the synthetic literature on this quaternary semiconductor is sparse and it has yet to be deposited and studied as a thin film. Here we describe the ability of a binary thiol-amine solvent mixture to dissolve the bulk bournonite mineral as well as inexpensive bulk CuO, PbO, and Sb2S3 precursors at room temperature and ambient pressure to generate an ink. The synthetic compound ink derived from the dissolution of the bulk binary precursors in the right stoichiometric ratios yields phase-pure thin films of CuPbSbS3 upon solution deposition and annealing. The resulting semiconductor thin films possess a direct optical band gap of 1.24 eV, an absorp- tion coefficient ~105 cm–1 through the visible, mobilities of 0.01-2.4 cm2 (V•s)–1, and carrier concentrations of 1018 – 1020 cm–3. These favorable optoelectronic properties suggest CuPbSbS3 thin films are excellent -
Mineral Collecting Sites in North Carolina by W
.'.' .., Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie RUTILE GUMMITE IN GARNET RUBY CORUNDUM GOLD TORBERNITE GARNET IN MICA ANATASE RUTILE AJTUNITE AND TORBERNITE THULITE AND PYRITE MONAZITE EMERALD CUPRITE SMOKY QUARTZ ZIRCON TORBERNITE ~/ UBRAR'l USE ONLV ,~O NOT REMOVE. fROM LIBRARY N. C. GEOLOGICAL SUHVEY Information Circular 24 Mineral Collecting Sites in North Carolina By W. F. Wilson and B. J. McKenzie Raleigh 1978 Second Printing 1980. Additional copies of this publication may be obtained from: North CarOlina Department of Natural Resources and Community Development Geological Survey Section P. O. Box 27687 ~ Raleigh. N. C. 27611 1823 --~- GEOLOGICAL SURVEY SECTION The Geological Survey Section shall, by law"...make such exami nation, survey, and mapping of the geology, mineralogy, and topo graphy of the state, including their industrial and economic utilization as it may consider necessary." In carrying out its duties under this law, the section promotes the wise conservation and use of mineral resources by industry, commerce, agriculture, and other governmental agencies for the general welfare of the citizens of North Carolina. The Section conducts a number of basic and applied research projects in environmental resource planning, mineral resource explora tion, mineral statistics, and systematic geologic mapping. Services constitute a major portion ofthe Sections's activities and include identi fying rock and mineral samples submitted by the citizens of the state and providing consulting services and specially prepared reports to other agencies that require geological information. The Geological Survey Section publishes results of research in a series of Bulletins, Economic Papers, Information Circulars, Educa tional Series, Geologic Maps, and Special Publications. -
Tetrahedrite (Cu, Fe, Ag, Zn)12Sb4s13 C 2001-2005 Mineral Data Publishing, Version 1
Tetrahedrite (Cu, Fe, Ag, Zn)12Sb4S13 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Cubic. Point Group: 43m. Crystals are tetrahedral, to 15 cm; common as groups of parallel crystals; massive, coarse or fine and granular to compact. Twinning: On {111} around [111] as twin axis; contact and penetration twins, commonly repeated. Physical Properties: Fracture: Subconchoidal. Tenacity: Somewhat brittle. Hardness = 3–4.5 VHN = 312–351 (100 g load). D(meas.) = 4.97 D(calc.) = 4.99 Optical Properties: Opaque, except in very thin fragments. Color: Flint-gray to iron-black to dull black, cherry-red in transmitted light; in polished section, gray inclining to olive-brown. Streak: Black to brown. Luster: Metallic, commonly splendent. Optical Class: Isotropic. n = > 2.72 (Li). R: (400) 32.1, (420) 31.8, (440) 31.7, (460) 31.7, (480) 31.8, (500) 32.0, (520) 32.2, (540) 32.4, (560) 32.4, (580) 32.3, (600) 32.0, (620) 31.5, (640) 31.0, (660) 30.6, (680) 30.2, (700) 29.8 Cell Data: Space Group: I43m. a = 10.23–10.55 Z = 2 X-ray Powder Pattern: Neugl¨uck mine, Wittichen, Black Forest, Germany. 3.00 (100), 1.831 (60), 1.563 (30), 2.61 (20), 1.056 (20), 3.69 (10), 2.46 (10) Chemistry: (1) (2) (3) (1) (2) (3) Cu 45.39 37.7 45.77 Fe 1.32 5.5 Ag 0.4 Sb 28.85 29.3 29.22 Pb 0.11 As trace 0.8 Zn 1.8 S 24.48 24.9 25.01 Total 100.15 100.4 100.00 (1) Bourg d’Oisans, France. -
Mineral Reconnaissance Programme Report
Natural Environment Research Council Institute of Geological Sciences Mineral Reconnaissance Programme Report -4 A report prepared for the Department of Industry This report relates to work carried out by the Institute of Geological Sciences on behalf of the Department of Industry. The information contained herein must not be published without reference to the Director, Institute of Geological Sciences. D. Ostle Programme Manager Institute of Geological Sciences Nicker Hill, Keyworth, Nottingham NG12 5GG No. 59 Stratabound arsenic and vein antimony mineralisation in Silurian greywackes at Glendinning, south Scotland INSTITUTE OF GEOLOGICAL SCIENCES Natural Environment Research Council Mineral Reconnaissance Programme Report No. 59 Stratabound arsenic and vein antimony mineralisation in Silurian greywackes at Glendinning, south Scotland ’Geology M. J. Gallagher, PhD, MIMM P. Stone, PhD A. E. S. Kemp, MA M. G. Hills, BSc Geochemistry R. C. Jones, BSc R. T. Smith, MSc, Dip Geochem D. Peachey, BSc, B. P. Vickers Geophysics M. E. Parker, BA K. E. Rollin, BSc Mineraiog y B. R. H. Skilton, BSc 0 Crown copyright 1983 London 1983 A report prepared for the Department of industry Mineral Reconnaissance Programme Reports 38 Geophysical evidence for a concealed eastern extension of the Tanygrisiau microgranite and its 11 A study of the space form of the Cornubian granite possible relationship, to mineralisation batholith and its application to detailed gravity surveys in Cornwall 39 Copper-bearing intrusive rocks at Cairngarroch Bay, south-west Scotland -
Revision 1 Trace Element Distributions in (Cu)-Pb-Sb Sulfosalts from the Gutaishan Au–Sb Deposit, South China: Implications Fo
1 Revision 1 2 Trace element distributions in (Cu)-Pb-Sb sulfosalts from the Gutaishan Au–Sb 3 deposit, South China: Implications for formation of high-fineness native gold 4 WEI LI1,2, NIGEL J. COOK3, CRISTIANA L. CIOBANU3, GUIQING XIE1,*, BENJAMIN P. 5 WADE4, SARAH E. GILBERT4 6 1Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, 7 Chinese Academy of Geological Sciences, Beijing 100037, China 8 2Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China 9 3School of Chemical Engineering, The University of Adelaide, 5005 S.A., Australia 10 4Adelaide Microscopy, The University of Adelaide, 5005 S.A., Australia 11 ABSTRACT 12 Compositional data, comprising electron probe microanalysis and laser-ablation inductively coupled 13 plasma mass spectrometry (LA-ICP-MS) trace element data are presented for common (Cu)-Pb-Sb 14 sulfosalts (bournonite, jamesonite, tetrahedrite and boulangerite), subordinate semseyite, heteromorphite, 15 robinsonite and (Cu)-Pb-Bi-Sb sulfosalts, and for accompanying base metal sulfides (BMS) in auriferous 16 gold veins from the Gutaishan Au–Sb deposit, southern China. The objectives of the study were to: 17 identify whether these sulfosalts represent overlooked hosts for precious metals and other trace elements 18 of petrogenetic or economic interest; establish partitioning trends among co-existing sulfosalt species 19 and between sulfosalts and BMS; and to seek evidence for a genetic link between the abundance of (Cu)- 20 Pb-Sb sulfosalts and the high-fineness of native gold in the deposit. All (Cu)-Pb-Sb sulfosalts analyzed 21 were found to be remarkably poor hosts for gold and thus do not contribute to the overall mineralogical * Corresponding author E-mail address: [email protected] 1 22 balance for gold. -
Tungsten Minerals and Deposits
DEPARTMENT OF THE INTERIOR FRANKLIN K. LANE, Secretary UNITED STATES GEOLOGICAL SURVEY GEORGE OTIS SMITH, Director Bulletin 652 4"^ TUNGSTEN MINERALS AND DEPOSITS BY FRANK L. HESS WASHINGTON GOVERNMENT PRINTING OFFICE 1917 ADDITIONAL COPIES OF THIS PUBLICATION MAY BE PROCURED FROM THE SUPERINTENDENT OF DOCUMENTS GOVERNMENT PRINTING OFFICE WASHINGTON, D. C. AT 25 CENTS PER COPY CONTENTS. Page. Introduction.............................................................. , 7 Inquiries concerning tungsten......................................... 7 Survey publications on tungsten........................................ 7 Scope of this report.................................................... 9 Technical terms...................................................... 9 Tungsten................................................................. H Characteristics and properties........................................... n Uses................................................................. 15 Forms in which tungsten is found...................................... 18 Tungsten minerals........................................................ 19 Chemical and physical features......................................... 19 The wolframites...................................................... 21 Composition...................................................... 21 Ferberite......................................................... 22 Physical features.............................................. 22 Minerals of similar appearance................................. -
Mineralogical and Preliminary Fluid Inclusion Studies of Lead-Antimony Mineralisation in North Cornwall
258 Read at the Annual Conference of the Ussher Society, January 1990 Mineralogical and preliminary fluid inclusion studies of lead-antimony mineralisation in north Cornwall R.E. CLAYTON, R.C. SCRIVENER and C.J. STANLEY Clayton, R.C., Scrivener, R.C. and Stanley, C.J. 1990. Mineralogical and preliminary fluid inclusion studies of leadantimony mineralisation in north Cornwall. Proceedings of the Ussher Society, 7, 258-262. Antimony mineralisation in the Port Isaac-St Endellion district of north Cornwall has been investigated in order to clarify its relationship to regional models of polymetallic mineralisation. The mineralisation is stratabound and confined to Middle Devonian to Lower Carboniferous volcano-sedimentary basinal successions. Minor shear structures and veining developed during late Variscan deformation at a high angle to regional cleavage, and these also contain small deposits of lead-antimony sulphosalt minerals. The minerals include species in the plagionite, jamesonite and boulangerite series associated with replacement carbonate phases and small quantities of gold. Fluid inclusion studies and the discrimination of equilibrium assemblages within sulphide and sulphosalt assemblages indicate a multistage evolution for the deposits. Thermometric data show that the fluids contain variable proportions of H 2O, CO 2 and CH 4. Minimum temperatures for Sb-As- (Au) mineralisation associated with highly deformed quartz microfabrics, (T H=280-315°C, salinity 3-4wt% NaCl equivs) contrast to those for Pb-Zn-Ag mineralisation associated with relatively unstrained quartz (T H=180-210°C, salinity 0.5-6wt% NaCl equivs). This may denote more than one mineralising event characterised by differences in structural style. Provisional results indicate that Sb-(Au) mineralisation was controlled by H 2O-CO 2 fluid immiscibility.