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Title: Reconstruction of the hydrothermal history of the Cu-Ag vein-type mineralisation at Dikulushi, Kundelungu foreland, Katanga, Democratic Republic of Congo
Authors: Dewaele, Stijn ×
Muchez, Philippe
Heijlen, W
Boutwood, A
Lemmon, T
Tyler, R #
Issue Date: Apr-2006
Publisher: Elsevier
Series Title: Journal of Geochemical Exploration vol:89 issue:1-3 pages:376-379
Abstract: The Kundelungu foreland, north of the Lufilian are in the Democratic Republic of Congo, contains a number of various vein-type and stratiform copper mineralisations. The geodynamic context and metallogenesis of these mineral occurrences remain enigmatic. Currently, the vein-type Cu-Ag ore deposit at Dikulushi is the most significant deposit in the region. Mineralisation at Dikulushi comprises two major styles: 1) a polysulphide assemblage (Zn-Pb-Fe-Cu-As) within brecciated rocks along an anticlinal closure; and 2) a vein-hosted Cu-Ag assemblage. Petrographic and fluid inclusion studies indicate that the early Zn-Pb-Fe-Cu-As assemblage formed from a high-salinity Ca-Na-Cl fluid of modest temperature (135-172 degrees C). The later, economically more significant vein-related Cu-Ag mineralisation formed from intermediate salinity, lower temperature (4682 degrees C) Na-Cl fluids. Weathering of the sulphide minerals resulted in a supergene enrichment with the formation of secondary Cu-minerals. (C) 2006 Elsevier B.V. All rights reserved.
ISSN: 0375-6742
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division of Geology
× corresponding author
# (joint) last author

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