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The Penjom Gold Mine is located 30 km from the Bentong-Raub Suture at the western boundary of the Central Belt in Peninsular Malaysia. Gold mineralization hosted within the vein system is associated with pyrite, arsenopyrite, and minor base metals including galena. Trace element and lead isotope analysis was undertaken on nine samples that represent two stages of galena formed during two tectonic events. Both the Pb isotopes and the trace elements show that the first stage galena within the mineralized areas at the footwall has different geochemical characteristics compared with galena in non mineralized areas in the hanging wall, suggesting that galena crystallized from two different ore fluids and probably at two different times. Higher Te, Se and Bi in the galena from the mineralized area may indicate hydrothermal fluids that migrate through the structural conduit and leached out the metal along the pathway that consist of dominant carbonaceous unit. The Pb isotopic ratio composition are transitional between the bulk crustal growth and an upper crustal growth curve, indicating that derivation was from arc rocks associated with continental crust or a crustal source that includes arc volcanic and old continental sedimentary rocks.

Item Type:	Refereed Article
Keywords:	galena, trace elements, Pb isotope, vein paragenesis, gold mineralisation
Research Division:	Earth Sciences
Research Group:	Geology
Research Field:	Ore Deposit Petrology
Objective Division:	Expanding Knowledge
Objective Group:	Expanding Knowledge
Objective Field:	Expanding Knowledge in the Earth Sciences
Author:	Meffre, S (Dr Sebastien Meffre)
Author:	Makoundi, C (Mr Charles Makoundi)
ID Code:	105876
Year Published:	2015
Funding Support:	Australian Research Council (CE0561595)
Deposited By:	Centre for Ore Deposit Research - CODES CoE
Deposited On:	2016-01-18
Last Modified:	2017-11-02
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