Last edited by Faura
Thursday, May 7, 2020 | History

2 edition of Nickel content of an Alaskan basic rock found in the catalog.

Nickel content of an Alaskan basic rock

Reed, John C.

Nickel content of an Alaskan basic rock

by Reed, John C.

  • 94 Want to read
  • 4 Currently reading

Published by U.S. G.P.O. in Washington .
Written in English

    Subjects:
  • Nickel ores -- Alaska -- Admiralty Island.,
  • Sills (Geology) -- Alaska -- Admiralty Island.,
  • Copper ores -- Alaska -- Admiralty Island.,
  • Geology -- Alaska -- Admiralty Island.,
  • Analytical geochemistry -- Alaska -- Admiralty Island.,
  • Petrology -- Alaska -- Admiralty Island.,
  • Mineralogy -- Alaska -- Admiralty Island.

  • Edition Notes

    Includes bibliographical references.

    Statementby John C. Reed.
    SeriesGeological Survey bulletin -- 897-D, Mineral resources of Alaska
    The Physical Object
    Paginationii, p. 263-268 :
    Number of Pages268
    ID Numbers
    Open LibraryOL22988526M

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    Josiah Edward Spurr (–) was an American geologist, explorer, and author. Born in Gloucester, Massachusetts, he was considered something of a failure as a youth, unsuited for the family fishing business, since on a voyage he invariably became seasick. Alaskan-type complexes commonly contain primary platinum-group element (PGE) alloys and lack base-metal sulfides in their dunite and chromite-bearing rocks. They could therefore host PGE deposits with rare sulfide mineralization. A detailed scanning electron microscope investigation on dunites from the Xiadong Alaskan-type complex in the southern Central Asian Orogenic Belt revealed: various.


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Nickel content of an Alaskan basic rock by Reed, John C. Download PDF EPUB FB2

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This paper is in large measure a sequel to one by Buddington describing the nickel minerals of certain localities in southeastern Alaska. 1 Buddington found that in all of the nickel-bearing localities examined, the mineral associations are almost identical and that they bear a close resemblance to those at Sudbury.

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In addition to basic geochemical measurements (TOC, Rock-Eval and GC analysis of C15+ saturated hydrocarbons), microscopic studies (normal and UV reflected light) were carried out to determine the abundance and initial distribution of hydrogen rich macerals including fluorescent mobile.

The nickel content of the ore is dependent on the amount of sulfides. In disseminated ore types, the average nickel grade is usually ≤1 wt%. In massive ores the nickel content can be up to 7 wt%.

TableTable give the average metal contents of the Svecofennian nickel deposits. Only in a few deposits is the average nickel grade. Shop bookshelves & bookcases at Target.

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The Earth is composed of four different layers. Many geologists believe that as the Earth cooled the heavier, denser materials sank to the center and the lighter materials rose to the top.

Because of this, the crust is made of the lightest materials (rock- basalts and granites) and the core consists of heavy metals (nickel and iron).

of the basic-rock bodies that constitute the deposits. The principal nickel mineral is pentlandite (iron-nickel sulfide).

In general the deposits con– tain only a little less chalcopyrite. The deposits apparently contain virtually no gold, silver, or metal of the platinum group. Metal weight calculator online - free steel weight calculator.

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Sulfur isotopic values of the mineralization at Duke Island range from to ‰, and are strongly suggestive of the involvement of country rock sulfur. Nickel contents of olivine (Fo 77–85) are variable; grains associated with a high proportion of sulfide are Ni-depleted (to values_. The non-stoichiometric sulfide mineral pyrrhotite (Fe(1-x)S), common to many nickel and platinum group element (PGE) ore deposits, occurs in varying crystallographic forms with the different.

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