An evaluation of the use of halogen and water abundances in efforts to distinguish mineralized and barren intrusive rocks |
| |
| Authors: | Stephen E Kesler Michael J Issigonis Jon C Van Loon |
| |
| Institution: | Department of Geology, University of Toronto, Toronto, Ont. Canada |
| |
| Abstract: | Analysis of the chlorine, fluorine and water content of approximately 200 samples from a total of fourteen mineralized and ten barren intrusive rocks from the Caribbean and Central America indicates that abundances of these constituents fail to distinguish mineralized rocks from barren rocks. Variations in background abundances arise from the increase in halogen content of potassium-rich rocks and from the depletion of halogens in altered and porphyritic rocks. A particularly well developed potassium-fluorine covariance is observed in tin-bearing granites, but such a covariance cannot be used to distinguish intrusive rocks associated with porphyry copper mineralization. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
