What is it about?
We use LA-(MC)-ICP-MS method to analyze trace elements and Sr and Pb isotopic compositions of various types of K-feldspar from a porphyry type Cu0Mo deposit in Hebei Province of South China. The results demonstrate that even in the very early potassic alteration stage of the porphyry mineralization system, an external material source from country rocks may contribute to the ore-forming fluids.
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Why is it important?
It is generally believed that the very early stage of potassic alteration in the porphyry ore-forming system may represent the pure magmatic component, and external material source and meteoric water involvement may play an increasing important role along with the evolution of ore-forming system from early to late stages. In this study, we found that even in the early stage of potassic alteration it may not be a closed magmatic system, but with contribution from external sources.
Perspectives
I hope this paper will enhance our understading for the porphyry type Cu-Mo mineralization system, and will be useful not only for geologists not also for mineral exploratists.
Shao-Yong Jiang
China University of Geosciences
Read the Original
This page is a summary of: In-situ analysis of trace elements and Sr-Pb isotopes of K-feldspars from Tongshankou Cu-Mo deposit, SE Hubei Province, China: Insights into early potassic alteration of the porphyry mineralization system, Terra Nova, October 2017, Wiley,
DOI: 10.1111/ter.12287.
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