dc.contributor.author	Burgess, A. W.	en
dc.date.accessioned	2013-07-31T03:24:32Z
dc.date.available	2013-07-31T03:24:32Z
dc.date.issued	1978	en
dc.description.abstract	In the Golden Blocks area, vein-type gold and sparse sulphide mineralization occur in slightly metamorphosed, complexly deformed, Lower Ordovician sandstones and mudstones. Primary gold mineralization is associated with quartz veins in deformation zones occurring near the contacts of several carbonaceous mudstones. Eighty-five percent of the gold production from the area has come from five workings confined to the stratigraphically lowest, most widespread occurrence of mudstone. The distribution of primary mineralization is controlled by two factors: 1. The deposition of gold by solution- wall rock interactions between mudstone sediment constituents and mineralizing solutions 2. The confinement of lodes formed within mudstones to those portions of deformation zones which are close to or intersect sandstone units. Productive gold deposits are confined to those primary lodes, permeable to supergene solution movement, which intersected the Upper Cretaceous weathering surface. The Ordovician sediments hosting the ore-bodies are only weathered to depth along deformation zones, and primary ore values appear to be enriched to workable grades by supergene processes.	en
dc.identifier.uri	http://hdl.handle.net/10092/8022
dc.identifier.uri	http://dx.doi.org/10.26021/8766
dc.language.iso	en
dc.publisher	University of Canterbury. Geology	en
dc.relation.isreferencedby	NZCU	en
dc.rights	Copyright A. W. Burgess	en
dc.rights.uri	https://canterbury.libguides.com/rights/theses	en
dc.title	Gold mineralization at the Golden Blocks gold field	en
dc.type	Theses / Dissertations
thesis.degree.discipline	Geology	en
thesis.degree.grantor	University of Canterbury	en
thesis.degree.level	Masters	en
thesis.degree.name	Master of Science	en
uc.bibnumber	106042	en
uc.college	Faculty of Science	en

Gold mineralization at the Golden Blocks gold field

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