TY - JOUR
T1 - The geology and geochemistry of the Rhyacian Josephine gold deposit, Northwest Ghana
AU - Atanga, Fuseini
AU - Amponsah, Prince Ofori
AU - Nunoo, Samuel
AU - Kwayisi, Daniel
AU - Forson, Eric Dominic
AU - Akabzaa, Thomas Mba
AU - Nude, Prosper Mckenzie
N1 - Publisher Copyright:
© 2023 Institute of Materials, Minerals and Mining and The AusIMM.
PY - 2023
Y1 - 2023
N2 - This 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.
AB - This 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.
KW - Deformation
KW - Josephine deposit
KW - alteration
KW - mineralisation
KW - ore body
UR - http://www.scopus.com/inward/record.url?scp=85173979558&partnerID=8YFLogxK
U2 - 10.1080/25726838.2023.2260583
DO - 10.1080/25726838.2023.2260583
M3 - Article
AN - SCOPUS:85173979558
SN - 2572-6838
VL - 132
SP - 252
EP - 270
JO - Applied Earth Science: Transactions of the Institute of Mining and Metallurgy
JF - Applied Earth Science: Transactions of the Institute of Mining and Metallurgy
IS - 3-4
ER -