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Saturday, July 25, 2020 | History

4 edition of Regional Metamorphism of Ore Deposits And Genetic Implications found in the catalog.

Regional Metamorphism of Ore Deposits And Genetic Implications

by P. G. Spry

  • 118 Want to read
  • 5 Currently reading

Published by Brill Academic Publishers .
Written in English

    Subjects:
  • Geology & the lithosphere,
  • Earth Sciences - General,
  • Interior Design - General,
  • Science,
  • Architecture,
  • Science/Mathematics

  • The Physical Object
    FormatHardcover
    Number of Pages244
    ID Numbers
    Open LibraryOL12849122M
    ISBN 10906764126X
    ISBN 109789067641265

    Primary deposits are subdivided into two types: magmatic and metamorphic (figure 3). Magmatic deposits include gem corundum in alkali basalts and sapphire in lamprophyres and rphic deposits are divided into metamorphic deposits sensu stricto (marble; M-UMR), and metamorphic-metasomatic deposits characterized by high fluid-rock interaction and . Peer-Reviewed Publications by Paul Spry Journal Articles and Book Chapters () 1. Saintilan, N.J., Creaser, R.A., and Spry, P.G., , Re-Os systematics of löllingite and arsenopyrite in granulite facies garnet rocks: Insights into the thermal evolution of the Broken Hill.

      Ore deposits (contact metamorphism) 1. Contact Metasomatism • Contact metasomatism is a process of formation of new mineral by reaction between the contact rock and the escaping high temperature gaseous emanation with other important materials from the magma chamber. Between and when the White Pine mine closed and ended copper mining in Michigan, the district produced approximately billion pounds of copper. In years of mining in the district, only about 40 percent of the total estimated copper contained in the deposit has been mined out.

    Classification of ore deposits. Classification of hydrothermal ore deposits is also achieved by classifying according to the temperature of formation, which roughly also correlates with particular mineralising fluids, mineral associations and structural styles. This scheme, proposed by Waldemar Lindgren () classified hydrothermal deposits as hypothermal, mesothermal, epithermal, and. Ore Deposits Formed by Metamorphism Metamorphic processes profoundly alter pre-existing mineral deposits and form new ones. The chief agencies involved are heat, pressure, time, and various solutions. The materials acted upon are either earlier formed mineral deposits or rocks. Valuable nonmetallic mineral deposits are formed from rocks chiefly by the crystallization and the.


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Regional Metamorphism of Ore Deposits And Genetic Implications by P. G. Spry Download PDF EPUB FB2

Buy Regional Metamorphism of Ore Deposits and Genetic Implications on FREE SHIPPING on qualified orders Regional Metamorphism of Ore Deposits and Genetic Implications: Spry, Bryndzia: : Books.

The unifying theme to the papers in this volume is that they deal with economic accumulations of sulfide minerals which, together with their host rocks, have been affected to varying degrees by regional metamorphism. The principle sulfide deposit types discussed are stratabound ZnCuPbAgBa deposits in regionally metamorphosed terranes which occur in a diverse variety of host lithologies.

Buy Regional Metamorphism of Ore Deposits and Genetic Implications: Proceedings of the 28th International Geological Congress, Washington, July 1 by Spry, Bryndzia (ISBN: ) from Amazon's Book Store.

Everyday low prices and free delivery on eligible orders. Get this from a library. Regional metamorphism of ore deposits and genetic implications: proceedings of the 28th International Geology [sic] Congress, July, [Paul G Spry; L Taras Bryndzia;].

The mineral composition of the basic volume of the ore-bearing deposits was formed during the process of regional metamorphism. Manganese mineralization forms two types of oxide-carbonate-silicate rocks (Brusnitsyn et al., ): manganous tuffites, deposited in the form of small lenses in the base of the ore bed among iron-rich volcaniclastic.

Regional metamorphism and deformation are additional processes affecting the primary ore texture of VMS deposits (e.g., Vokes, Vokes, Laznicka, ;Cook et al., ;Cartwright and.

The types of mainly metallic mineralization found in metamorphic terranes are reviewed and an attempt is made to define the genetic relations between the mineralization and the metamorphic terms metamorphosed, metamorphic, and metamorphogenic as applied to ores are also development of thought and the history of investigations on ores in metamorphic terranes aretraced.

Metamorphosed and Metamorphogenic Ore Deposits Regional Metamorphism and Ore Formation: C.A. Heinrich, A.S. Andrew, and M.D.

Knill Evidence from Stable Isotopes and Other Fluid Tracers Fiuid Inclusions in Metamorphosed and Synmetamorphic B. Marshall, A.D. Giles, and S.G. Hagemann (Including Metamorphogenic) Base and Precious Metal.

Spry, P.G. The genetic relationship between coticules and metamorphosed massive sulfide deposits. In Regional Metamorphism of Ore Deposits and Genetic Implications.

Edited by P.G. Spry and L.T. Bryndzia. VSP Publishers, Utrecht, pp. 49– Google Scholar. Genetic implications of stable isotope characteristics of mesothermal Au deposits and related Sb and Hg deposits in the Canadian Cordillera. ECON G – Newberry, R. & Einaudi, M.

They may be said to be products of contact metamorphism, but the causal agent is the interaction with magmatic fluids and not simple change by heating. Therefore, it was discussed in the magmatic domain.

Orogenic (regional) metamorphism of ore deposits is common. Temperatures may reach °C and pressures 30 kbar. The iron ore textural classification scheme presented uses textural groupings defined on the basis of similarities in mineralogy, ore texture, porosity, mineral associations and hardness.

The scheme is non-genetic and has been successfully applied to deposits in. VMS systems, including overprinting by postore regional metamorphism. Mineral Assemblages and Zoning Patterns. Early studies of alteration mineral assemblages empha-sized zonal arrangements of mineralogy around sulfide veins at Butte, Mont.

and at several porphyry copper deposits (Sales and Meyer, ; Titley and Hicks, ; Meyer and. Early tentative hypotheses, that regional metamorphism may be genetically associated with the formation of mineral deposits are now reasonably confirmed, and the class of metamorphogenic mineral deposits is widely accepted.

Two end member models define a range of possibilities occurring in nature: the prograde devolatilization model, and the retrograde leaching model. Detailed texture characterization coupled with large geochemistry data set is recommended for orogenic gold deposit.

• The ore-forming fluid at Qiuling deposit may have sourced from metamorphism of the regional Neoproterozoic basement. • Sedimentary pyrite in the wall rocks contributed negligible Au and As for mineralization at the Qiuling. Relation of orebodies to adjacent dykes, often obscured by their mutual interpenetration along the contact, may be further masked due to the effects of intervening or subsequent regional metamorphism.

The actual chronological sequence of the three episodes (Viz. mineralization intrusion, and dregional metamorphism) — an information often crucial from stratigraphic an oregenetic viewpoints. The Palaeoproterozoic, volcanic-hosted Falun Zn-Pb-Cu-(Au-Ag) sulphide deposit was mined for base and precious metals during several centuries, until its closure in The deposit is located in a Ga ore district in the Bergslagen lithotectonic unit, Fennoscandian Shield, south-central Sweden.

Both the ores and their host rock underwent polyphase ductile deformation, and metamorphism. Regional Metamorphism • Regional metamorphism occurs over broad areas, is cause by high pressure and temperature, and deformation in deeper portions of the crust.

It is most obvious along convergent plate boundaries • This is the most common form of metamorphism. rials. Finally, we propose a genetic type for the Jinshan gold deposit and discuss the implications for future explo-ration.

GEOLOGICAL SETTING AND REGIONAL GEOLOGY The NEE-SSW trending, approximately km-long Jiangnan orogen is located in the South China Block and divides it into two blocks: the Yangtze Block to the north. Metamorphogenic Deposits mineral deposits formed in the process of metamorphism under conditions of high pressure and temperature.

The deposits are subdivided into metamorphosed and metamorphic deposits. Metamorphosed deposits form as a result of the processes of regional and local metamorphism of minerals.

The bodies of minerals are deformed and. Genetic Model of Ore Deposits. can form during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, meteoric, and/or marine origin. They are found adjacent to plutons, along faults and major shear zones, in shallow geothermal systems, on the bottom of the seafloor, and at.The deposit was discovered in as the result of a regional exploration program initiated by NextSource Materials Inc.

following their delineation of a vanadium deposit called the Green Giant.Sarkar, S.C.,Geologic setting, characteristics, origin and evolution of the sediment-hosted sulphide ore deposits of Rajasthan A critique, with comments on their implications for future exploration, in Deb, M., ed., Crustal evolution and metallogeny in the northwestern Indian shield: New Delhi, Narosa Publishing House, p.