Assessing REE-phosphate mineral chemistry for ISCG exploration

Date

2023

Authors

Batch, T.
Tiddy, C.
Brotodewo, A.
Giles, D.

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Conference paper

Citation

17TH BIENNIAL SGA MEETING, 2023, VOL 1, 2023, vol.1, pp.339-342

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17th Biennial Meeting of the Society-for-Geology-Applied-to-Mineral Deposits (SGA) on Mineral Resources in a Changing World (28 Aug 2023 - 1 Sep 2023 : SWITZERLAND, ETH Zurich, Zurich)

Abstract

Challenges related to thick cover sequences that bury rocks prospective for and/or hosting mineralisation make exploration challenging and financially risky. In response geochemical targeting tools based on mineral chemistry are being developed to aid deep exploration. One such tool being developed is based on the mineral chemistry of REE-bearing phosphate minerals (monazite, rhabdophane) to indicate proximity to Cu-Au ore deposits. To develop this tool, examples from known ore deposits must be tested. Here we present the initial results from the Jericho iron sulfide-copper-gold (ISCG) deposit in the Cloncurry District, Queensland, Australia. Metamorphic REE-bearing phosphates can be distinguished from mineralisation-associated hydrothermal REE-bearing phosphates based on Ca concentrations in combination with Th and S concentrations.

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Copyright 2023 Society for Geology Applied to Mineral Deposits

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