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Mapping magmatic and hydrothermal processes from routine exploration geochemical analyses

Citation

Halley, S, Mapping magmatic and hydrothermal processes from routine exploration geochemical analyses, Economic Geology, 115, (3) pp. 489-503. ISSN 0361-0128 (2020) [Refereed Article]

Copyright Statement

2020 Society of Economic Geologists, Inc

DOI: doi:10.5382/ECONGEO.4722

Abstract

Analytical methods used by commercial assay laboratories have improved enormously in recent years. Inductively coupled plasma-atomic emission spectroscopy and inductively coupled plasma-mass spectrometry methods now report analyses for half of the periodic table with exceptional detection limits and precision. It is becoming commonplace for mining companies to use such methods routinely for the analysis of drill samples throughout mineral deposits. Improvements in software and computing power now allow rapid interrogation of upward of 100,000 assay samples. Geochemical analyses are quantitative, are independent of observer bias, and can form the basis for robust geologic and mineralogical models of mineral deposits, as well as shed light on scientific questions. In particular, consistently collected, high-quality geochemical analyses can significantly improve and systematize logging of lithological and hydrothermal alteration mineralogic changes within drill core. In addition, abundant, high-quality geochemical data provide insights into magmatic and hydrothermal processes that were previously difficult to recognize and that have obvious applications to mineral exploration and improved genetic models of ore deposits. This paper describes a workflow that mining industry geologists can apply to their multielement analysis data to extract more information about magma compositions and gangue mineralogy.

Item Details

Item Type:Refereed Article
Keywords:magmatic, petrogenesis, batholith, evolution
Research Division:Earth Sciences
Research Group:Geochemistry
Research Field:Exploration geochemistry
Objective Division:Mineral Resources (Excl. Energy Resources)
Objective Group:Mineral exploration
Objective Field:Copper ore exploration
UTAS Author:Halley, S (Mr Scott Halley)
ID Code:152222
Year Published:2020
Web of Science® Times Cited:8
Deposited By:CODES ARC
Deposited On:2022-08-15
Last Modified:2022-09-14
Downloads:0

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