NDLI: The geology and mineralisation at the Golden Pride gold deposit, Nzega Greenstone Belt, Tanzania

Content Provider	Springer Nature Link
Author	Vos, I. M. A. Bierlein, F. P. Standing, J. S. Davidson, G.
Copyright Year	2009
Abstract	The Golden Pride gold deposit (∼3 Moz) is located in the central part of the Nzega Greenstone Belt at the southern margin of the Lake Victoria Goldfields in Tanzania. It represents an inferred Late Archaean, orogenic gold deposit and is hosted in intensely deformed meta-sedimentary rocks in the hanging wall of the approximately E–W striking Golden Pride Shear Zone. The hanging-wall sequence also includes felsic (quartz porphyritic) to mafic (lamprophyric) intrusions, as well as banded iron formations. Hydrothermal alteration phases associated with mineralisation are dominated by sericite and chlorite. Two main ore types can be distinguished, chlorite and silica ore, both occupying dilational sites and structural intersections in the hanging wall of the main shear zone. Sulphide minerals in both ore types include pyrrhotite, arsenopyrite, pyrite and accessory sphalerite, galena, sulphosalts and Ni–Co–Bi sulphides. Gold and tellurides are late in the paragenetic sequence and associated with a secondary phase of pyrrhotite deposition. Sulphur isotope compositions range from −6 to 7 per mil and are interpreted to reflect contributions from two distinct sources to the mineralising fluids in the Golden Pride gold deposit. A redox change, potentially induced by the intrusion of mafic melts, together with structural elements in the hanging wall of the Golden Pride Shear Zone, are interpreted to be the main controls on gold mineralisation in this deposit.
Starting Page	751
Ending Page	764
Page Count	14
File Format	PDF
ISSN	00264598
Journal	Mineralium Deposita
Volume Number	44
Issue Number	7
e-ISSN	14321866
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-06-06
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Lake Victoria Goldfields Tanzania Orogenic gold Golden Pride Late Archaean Mineral Resources Mineralogy Geology
Content Type	Text
Resource Type	Article
Subject	Geophysics Economic Geology Geochemistry and Petrology

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