The geology and geochemistry of the Rhyacian Josephine gold deposit, Northwest Ghana
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Date
2023
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Applied Earth Science
Abstract
his paper focuses on the geology and geochemistry of the Rhyacian Josephine gold deposit in
northwestern Ghana, where gold is primarily hosted in quartzites, with other lithologies
observed, including granitoids, mafic intrusions, and gneisses. Four deformational events,
DJO0, DJO1, DJO2, and DJO3, are observed. DJO0 is synonymous with the primary preserved
sedimentary crossbedding in the quarzitic rocks. Gold mineralization within the deposit is
mainly associated with the DJO1 NNW-trending dextral and steeply dipping sinusoidal shear
zone. Gold occurs primarily as free gold and invisible gold within the lattices of the
disseminated arsenopyrite along the shear foliation planes of the host rock. The ore body
geometry is 15–40 m wide and strikes 800 m in the NNW direction. Silicification,
sericitization, chloritization, and sulphidation are the main alteration assemblages associated
with the gold mineralization zones within the Josephine deposit. Pathfinder elements for
gold are stibnite, tellurium, sulphur, copper, silver, and Lead
Description
Research Article
Keywords
Deformation, alteration, mineralisation
Citation
To cite this article: Fuseini Atanga, Prince Ofori Amponsah, Samuel Nunoo, Daniel Kwayisi, Eric Dominic Forson, Thomas Mba Akabzaa & Prosper Mckenzie Nude (29 Sep 2023): The geology and geochemistry of the Rhyacian Josephine gold deposit, Northwest Ghana, Applied Earth Science, DOI: 10.1080/25726838.2023.2260583