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Tuesday, May 5, 2020 | History

3 edition of Grade-tonnage data for detachment-fault related polymetallic deposits found in the catalog.

Grade-tonnage data for detachment-fault related polymetallic deposits

Grade-tonnage data for detachment-fault related polymetallic deposits

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Published by U.S. Dept. of the Interior, U.S. Geological Survey, Books and Open-File Reports Section, distributor] in [Menlo Park, Calif.?], [Denver, Colo .
Written in English

    Subjects:
  • Ore deposits -- Arizona.,
  • Ore deposits -- California.,
  • Mines and mineral resources -- Arizona.,
  • Mines and mineral resources -- California.

  • Edition Notes

    Other titlesGrade tonnage data for detachment fault related polymetallic deposits
    Statementby Keith R. Long.
    SeriesOpen-file report -- 93-0228, U.S. Geological Survey open-file report -- 93-228.
    ContributionsGeological Survey (U.S.)
    The Physical Object
    FormatMicroform
    Pagination18 leaves
    Number of Pages18
    ID Numbers
    Open LibraryOL17109496M

    Marigold is located in the Battle Mountain mining district at the northern end of Nevada’s Battle Mountain-Eureka trend. This trend is a conspicuous alignment of ore deposits containing in excess of 2, tonnes (t) (90 Moz) Au primarily in disseminated deposits hosted in sedimentary rock, including Carlin-type and porphyry-related systems (Berger et al., ; Davis and Muntean, ). The Morning Star Mine is near Cima, California. DETACHMENT-FAULT-RELATED POLYMETALLIC COPPER-GOLD-SILVER-LEAD-ZINC DEPOSITS 40A--Production. or for the improper or incorrect use of these geospatial data. These geospatial data and related maps or graphics are not legal documents and are not intended to be used as such. The data and maps.

    COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (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 coronavirus. Exploitation of skarn-type Be polymetallic deposit has rarely been reported (Bulnaev, , Malyukova et al., , Lykhin et al., , Yarmolyuk et al., , Damdinova et al., , Schilling et al., ). Recently, a skarn Be deposit with huge reserves of Be-W-Sn has been discovered in the Cuonadong dome, Tethyan Himalaya.

      Porphyry deposits are very large, polymetallic systems that typically contain copper along with other important metals. Much of today’s mineral production depends on porphyries: 60% of copper, 95% of molbdenum, and 20% of gold comes from this deposit type. Historic and producing economic deposits include the Trepča skarn district of eastern Kosovo (Strmić-Palinkaš et al., ) and the Kiseljak Au-Cu porphyry and polymetallic Au-Ag-Pb-Zn vein system of the Serbian Lece magmatic complex (Dragicc et al., ).


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Grade-tonnage data for detachment-fault related polymetallic deposits Download PDF EPUB FB2

Long () reported grade and tonnage data for detachment-fault related polymetallic deposits using production data gathered by the U.S. Bureau of Mines and summarized by Keith and others ().

Subsequent analysis of that data show that they are incomplete and generally represent hand-sorted concentrates sent directly to : K.R. Long. Get this from a library. Grade-tonnage data for detachment-fault related polymetallic deposits. [Keith R Long; Geological Survey (U.S.)].

STRUCTURAL SETTING: Local flexures of a regional detachment fault with strong development of upper-plate, high-angle, listric and planar normal faults. ORE DEPOSIT GEOMETRY: (1) Narrow fracture and fault fillings that are 3 cm to 12 m in width with strike lengths of 30 to 2, m.

Title: Descriptive Model of Detachment-Fault-Related Polymetallic Deposits Author: Keith R. Long Subject: geologic model Created Date: Monday, Novem AM.

Descriptive and grade-tonnage models of volcanogenic manganese deposits in oceanic environments [electro Grade-tonnage data for detachment-fault related polymetallic deposits [microform] / by Keith R.

Long; Mineral deposit grade-tonnage models II [microform] / by D.A. Singer and D.L. Mosier, editors. 'Detachment-fault-related polymetallic deposits REGIONAL GEOLOGIC ATTRIBUTES GRADE-TONNAGE MODEL OF LACUSTRINE MANGANESE by Arizona, and southeastern California. Grade and tonnage data have been published for only six of the dozen or so known deposits (Table 1).

These data are fit very poorly by the lognormal distribution (Figures 1 and Author: Keith R. Long, J.C. Wynn, F.

Fritz, J. Corbett. GRADE AND TONNAGE MODELS FOR THE ANALYSIS OF NEVADA'S MINERAL RESOURCES. deposits used in the grade-tonnage model for porphyry. relative frequencies of related deposit. Long, Keith R. Grade-Tonnage Data for Detachment-Fault Related Polymetallic Deposits.

Geology and Mineral Resources of the Buckskin and Rawhide Mountains, West Central Arizona. A recent compilation about the geology and resources of volcanogenic massive sulfide deposits by Mosier et al.

() is the principal source of information used in this analysis. A total of Detachment faulting is associated with large-scale extensional ment faults often have very large displacements (tens of km) and juxtapose unmetamorphosed hanging walls against medium to high-grade metamorphic footwalls that are called metamorphic core are thought to have formed as either initially low-angle structures or by the rotation of initially high-angle.

Grades and tonnages for detachment-fault-related polymetallic deposits [Tonnages in short copper, lead, and zinc grades in percent; silver and gold grades in troy ounces per short ton.

Country and state abbreviations explained in app. The data reported in the above sources use spatial rules to combine adjacent deposits in order to have a consistent sampling unit that can be applied in statistical analysis and in assessments of.

Remote sensing data provide valuable insight into the alteration patterns in the Swansea area. While it was conceivable that the alteration might have been limited to fluid conduits along the Buckskin-Rawhide detachment fault or associated normal faults, ASTER clay mineral maps (Fig.

) show that this is not the fact, analysis of ASTER imagery reveals that the volcanic units (mostly. Book and Open-File Report Sales U.S. Geological Survey Federal Center, Box Denver, CO Library of Congress Cataloging-in-Publication Data Mineral deposit models (U.S. Geological Survey Bulletin ) Bibliography 1.

Ore Deposits. Mines and mineral resources. Cox, Dennis P, Il. Singer, Donald A. Ill. Series. QEB9 No. Typing Mineral Deposits Using Their Associated Rocks, Grades and Tonnages Using a Probabilistic Neural Network Article (PDF Available) in Mathematical Geology 38(4).

grade tonnage, orebody Contents 1. Introduction 2. Deposit Types and their Modes of Origin Skarn Deposits It is important to recognize that—in bimetallic or polymetallic deposits—the base Vol.

IV – Geology of Base-Metal Deposits - Sangster Size: KB. Porphyry copper deposits of the world: database, map, and grade and tonnage models, Book January with Reads How we measure 'reads'. This publication provides a set of systematic descriptive models for each uranium deposit type, subtype and class, using a consistent approach to summarise the same types of information for each.

Each model is intended to have a standalone capability, using a tabular style that is typical of conventional mineral resource industry standards. I Grade-tonnage data for detachment-fault related polymetallic I Comments on the "three-step" method for quantification of un I Porosity, depth, and thermal-maturity data for sandstones of I Data, software, and applications for education and research.

DATABASE OF SIGNIFICANT DEPOSITS OF GOLD, SILVER, COPPER, LEAD, AND ZINC IN THE UNITED STATES PART A: DATABASE DESCRIPTION AND ANALYSIS by Keith R. Long1, John H. DeYoung, Jr.2, and Stephen D. Ludington3 Deposit Type Alkaline Au-Te Basaltic Cu Detachment fault-related polymetallic Distal-disseminated Ag-Au Duluth Cu-Ni Epithermal vein.

Grade tonnage plot for alkaline-related gold deposits. Dashed contours indicate total gold in deposit. Shaded ellipse defines field for >80 percent of mesothermal lode veins (after Taylor, ).The Salt Chuck, Alaska, alkaline orthomagmatic deposit is shown in italicized letters (Mutschler and Mooney, ).Cripple Creek and the La Plata district have each been plotted as two points.Location map of major detachment faults and detachment-fault-related mineral deposits in Arizona, southeastern California, and southernmost Nevada 53 Schematic diagram showing structural position of detachment-fault-related polymetallic mineralization, Ba-F-Mn veins, and lacustrine manganese mineralization in detachment-faulted terranes 54File Size: KB.

37 C H A P TE R FOU R Cut-off Grade for Polymetallic Deposits Polymetallic deposits are defined as deposits that contain more than one metal of economic value. The formulae that must be used to calculate the utility of sending one metric ton of material to a given destination or process must con- sider the contribution of each metal.