Year
1978
Degree Name
Doctor of Philosophy
Department
Department of Geology
Recommended Citation
Roberts, Frederick Ivor, Sulphide mineralization and host rocks of the Kangiara region, New South Wales, Doctor of Philosophy thesis, Department of Geology, University of Wollongong, 1978. https://ro.uow.edu.au/theses/1411
Abstract
The Kangiara region, in south-eastern New South Wales, forms part of the Lachlan Fold Belt. The region is underlain predominantly by acid volcanic rocks (the Hawkins Volcanics) of Silurian age with minor intercalations of limestones, shales and sandstones, deposited on a continental margin in a partly marine environment. Study of 209 thin sections and 89 whole rock chemical analyses shows that the Hawkins Volcanics consist of siliceous, potassium-rich calc-alkaline pyroclastic rocks varying in composition from dacite to rhyolite. Detailed investigation of the base-metal sulphide mineralization in the region, including mineragraphic examination of 411 polished sections, 610 electron microprobe analyses and trace element determinations on 95 sulphide mineral separates, indicates that four main types of deposit are present: Kangiara-type in the Hawkins Volcanics; mineralization at Rays prospect on the contact between Hawkins Volcanics and Mundoonen Sandstone; mineralization in limestone and calc-silicate hornfelses; and mineralization in metamorphosed Ordovician sedimentary rocks.
Unless otherwise indicated, the views expressed in this thesis are those of the author and do not necessarily represent the views of the University of Wollongong.