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Monday, August 3, 2020 | History

3 edition of Volcanogenic gold deposits found in the catalog.

Volcanogenic gold deposits

Volcanogenic gold deposits

  • 66 Want to read
  • 24 Currently reading

Published by Minobras in Dana Point .
Written in English

    Subjects:
  • Gold

  • Edition Notes

    11

    Classifications
    LC ClassificationsTN 420 E39 1982
    The Physical Object
    Pagination143 p.
    Number of Pages143
    ID Numbers
    Open LibraryOL22004418M
    ISBN 100942218191

    Deposits are classified as primary, alluvial or placer deposits, or residual or laterite deposits. Often a deposit will contain a mixture of all three types of ore. Plate tectonics is the underlying mechanism for generating gold deposits. The majority of primary gold deposits fall into two main categories: lode gold deposits or intrusion. Ex-library, previous owner's stamp on inside front flyleaf. Economic Geology Monograph 5. Blue cloth cover with gold lettering on front and spine. Binding slightly rubbed and soiled, interior front hinge cracked, some aging of pages. An important work. 30 plus papers on massive sulfide deposits, which focus on Kuroko-type volcanic exhalative deposits (ancient "black smokers"). .

    Gold-rich volcanogenic massive sulfide (VMS) deposits consist of synvolcanic banded and concordant mas-sive sulfide lenses and adjacent stockwork feeder zones in which gold concentration in g/t Au exceeds the com-bined Cu, Pb, Zn grades in wt percent and thus constitutes the main commodity. The Agnico-Eagle LaRonde. Geophysical Signature of the DeGrussa Copper‐Gold Volcanogenic Massive Sulphide Deposit, Western Australia by Kelvin Blundell1 Bill Peters 1 Margaret Hawke 2 Summary The DeGrussa copper‐gold Volcanogenic Massive Suphide (VMS) deposit is located kms north of Meekatharra, Western Australia.

      The – Ga Arabian-Nubian Shield of northeast Africa comprises an assemblage of volcanic arc and sub-arc strata that are fertile for volcanogenic massive sulphide (VMS) and overlying oxide gold deposits. At least fifty VMS deposits are known in the Nubian Shield west of the Red Sea, many of which are clustered in by: 5. Volcanogenic massive sulfide deposits. Information on VMS deposits from around the world with new grade and tonnage models for three subtypes of VMS deposits and data allowing locations of all deposits to be plotted using GIS.


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Volcanogenic gold deposits Download PDF EPUB FB2

Volcanogenic massive sulfide deposits contain variable amounts of gold, from an average production grade of about 1 g/t to more than 10 g/t in some deposits (Fig. They include conventional base metal massive sulfides with accessory gold as well as some deposits in which gold is a primary commodity.

COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Volcanogenic gold deposits book (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle.

of hydrothermal alteration assemblages and their zonal relationships in the field may provide important evidence that a terrane under assessment is favorable for occurrence of VMS deposits. Hydrothermal alteration varies widely from district to district and among individual deposits, and the literature on this topic is Size: KB.

GOLD-RICH VOLCANOGENIC MASSIVE SULPHIDE DEPOSITS BENOIT DUBÉ1, PATRICE GOSSELIN1, MARK HANNINGTON2 AND ALAN GALLEY2 1Geological Survey of Canada, Chemin Sainte-Foy, Quebec, G1S 2L2, Canada 2Geological Survey of Canada, Booth Street, Ottawa, Ontario, K1A 0E8, Canada E-mail: [email protected] Definition Definition of Gold File Size: 6MB.

Abstract Volcanogenic massive sulfide deposits contain variable amounts of gold, both in terms of average grade and total gold content, with some VMS deposits hosting world-class gold mines with more than t Au. Porphyry copper, molybdenum, and gold Volcanogenic gold deposits book, volcanogenic deposits (massive sulfides), and deposits in layered rock.

Victor F. Hollister. Society for Mining, Metallurgy, and Exploration, - Nature - pages. 0 Reviews. From inside the book. What people are saying - Write a review. We haven't found any reviews in the usual places.

The occurrence and distribution of gold in volcanogenic massive sulfides on the modern sea floor is a function of the physical and chemical characteristics of the hydrothermal fluids and theil ability to become saturated with respect to gold at a high concentration.

Gold-bearing volcanogenic massive sulfides and orogenic-gold deposits in the Nubian Shield Article (PDF Available) in South African Journal of Geology (1). VMS deposits are dominated by copper and zinc, but there are a number of other minor minerals, including: lead, silver, gold, cobalt, tin, selenium, magnesium, cadmium and a whole host of other ones that are associated with them.

The deposits consist of a massive sulphide cap that formed on the seafloor and sort of lies parallel between two. Volcanogenic massive sulfide deposits contain variable amounts of gold, both in terms of average grade and total gold content, with some VMS deposits hosting world-class gold mines with more than t Au.

Previous studies have identified gold-rich VMS as having an average gold grade, expressed in g/t, exceeding the total abundance of base metals, Cited by: The book will be dominantly read by students and teachers, but could also be useful for professional geologists wanting a modern overview of a wide range of ore deposits and ore-forming processes.

Ian Pitcairn Source: Economic Geology ' [the] layout, [the] clear presentation of the topic, the choice of sample deposits, the glossary of Author: John Ridley.

Get this from a library. Porphyry copper, molybdenum, and gold deposits, volcanogenic deposits (massive sulfides), and deposits in layered rock. [Victor F Hollister;]. their origin, iron oxide-copper-gold (IOCG) deposits with economically recoverable uranium contents are not considered in this model.

The IAEA’s tabulation of volcanogenic uranium deposits lists deposits in 20 countries, with major deposits in Russia, Mongolia, and China. Collectively these deposits are estimated to containFile Size: KB. Volcanogenic Massive Sulphide Deposits.

Much of the copper, zinc, lead, silver, and gold mined in Canada is mined from volcanic–hosted massive sulphide (VHMS) deposits associated with submarine volcanism (VMS deposits).

Examples are the deposits at Kidd Creek, Ontario, Flin Flon on the Manitoba-Saskatchewan border, Britannia on Howe Sound Author: Steven Earle. Details of deposits are only given where this serves to illustrate typical features of a certain deposit type.

The Suurikuusikko (Kittilä mine) and Pampalo deposits, as well as the gold occurrences in the Rompas area are described in detail in other chapters (i.e., and ) of this book.

Genetic Types of Gold Deposits Recognized in Cited by: 4. Volcanogenic massive sulfide ore deposits, also known as VMS ore deposits, are a type of metal sulfide ore deposit, mainly copper-zinc which are associated with and created by volcanic-associated hydrothermal events in submarine environments.

These deposits are also sometimes called volcanic-hosted massive sulfide (VHMS) deposits. The density generally is kg/m 3. As a source of gold volcanogenic massive sulfides are not the primary source, but they do contain a substantial amount of gold as a byproduct.

These deposits also hold significant amounts of copper, lead, zinc as well as gold and silver. Throughout history the VMS deposits are generally not the first choice of miners, as they are usually small and can be difficult to : Geotek.

Hannington, M. D., Poulsen, K. and Thomsen, J. H () Volcanogenic gold in the massive sulfide environment. In: Volcanic-Associated Massive Sulfide Deposits Cited by: The Metallogeny of Lode Gold Deposits: A Syngenetic Perspective is a synthesis of lode gold vein forming processes, addressing the commonality in similar worldwide deposits.

The book’s empirical model incorporates widely known and accepted principles of ore deposition and shows how it applies in the volcanic-sedimentary greenstone belt.

Photo shows gold jewelry recovered from the ash deposits of the 79 A.D. eruption of Vesuvius. Gold forms in close association with volcanoes or is hosted in volcanic rocks. Three environments/styles are most common: gold in greenstone belts, gold in porphyry deposits, and gold in epithermal deposits.

The Metallogengy of Lode Gold Deposits: A syngenetic perspective is a comprehensive study of gold deposits, including field studies, geochemistry and structural overprinting with many examples of Canadian lode gold deposits.

The book mentioned here is designed to provide geologists with the tools to develop comprehensive exploration and prospect evaluation .VMS deposits are grouped according to base metal con-tent, gold content and host-rock lithology (Figs 2,3,4).

The base metal classification used by Franklin et al. () and refined by Large () is perhaps the most common. VMS deposits are divided into Cu-Zn, Zn-Cu and Zn-Pb-Cu groups according to their contained ratios of these three met.Copper deposits in sedimentary and volcanogenic rocks on *FREE* shipping on qualifying cturer: United States Geological Survey.