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Geology and geochemistry of base metal deposits

1953; Volume: 48; Issue: 5 Linguagem: Inglês

10.2113/gsecongeo.48.5.370

1554-0774

Harry Wilson,

Geological and Geochemical Analysis

Other| August 01, 1953 Geology and geochemistry of base metal deposits Harry David Bruce Wilson Harry David Bruce Wilson Search for other works by this author on: GSW Google Scholar Economic Geology (1953) 48 (5): 370–407. https://doi.org/10.2113/gsecongeo.48.5.370 Article history first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Harry David Bruce Wilson; Geology and geochemistry of base metal deposits. Economic Geology 1953;; 48 (5): 370–407. doi: https://doi.org/10.2113/gsecongeo.48.5.370 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search nav search search input Search input auto suggest search filter All ContentBy SocietyEconomic Geology Search Advanced Search Abstract The geochemical character and principles of distribution of the elements in igneous rocks are summarized. The geology and geochemistry of the base metals are then discussed in turn. Chromium and titanium are small lithophile ions related in size and distribution to ferric iron; thus they are concentrated in early magmatic differentiates associated with ultrabasic and basic rocks respectively. The thiophile elements nickel, copper, cobalt, zinc, and lead are concentrated in sulphide bodies. Immiscible sulphide deposits can separate only from ultrabasic and basic magmas because of the solubility of sulphur in silicate melts; hence the only thiophile elements that concentrate in the sulphide segregations are copper, nickel, and cobalt which are strongly concentrated in basic rocks and magmas. Nickel sulphide occurs almost entirely in these magmatic sulphide ores because of the small size of the nickel ion, but the somewhat larger cobalt and copper ions may be concentrated in hydrothermal as well as magmatic sulphide deposits. The hydrothermal deposits may be typed according to whether they are copper or copper-cobalt, copper-zinc, zinc-copper-lead, or lead-zinc deposits. Each type is associated with specific compositions of igneous rocks or magmas in which the elements are most concentrated because of their geochemical character and associations. Many of the principles outlined can be used in assessing deposits and areas for exploration and development. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not currently have access to this article.