Hill End Gold Field

New South Wales, NSW, Australia

Main commodities: Au
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The Hill End gold field is located within the Palaeozoic Lachlan Fold Belt in central-western New South Wales, Australia.   It was the site of the first discovery of economic gold in Australia in 1851.

The Hill End gold field is noted for its coarse gold, both as alluvial nuggetts and as masses of gold and quartz in narrow quartz veins.   The lodes are hosted on the flanks of the Hill End and adjacent anticlines within a deformed sequence of Silurian to Devonian turbidites.   They have similarities to the Victorian deposits (eg Ballarat and Bendigo), also within the Lachlan Fold Belt, but some 650 km to the south-west.

The doubly plunging Hill End anticline is the highest amplitude fold in the district and has the structurally highest crest.   Most of the payable gold occurs on the east dipping limb, in small, rich, bedding plane parallel veins, while lesser deposits are found in the western limb and adjacent folds.   These veins are <1 up to 15 cm thick on the limbs and up to 2 m wide on the crest.   Gold also occurs in thin (1 to 20 mm) leader veins that are generally flat lying and merge with, but dont cut the main veins.   In addition there are zones of brecciation and stockwork veining, locally over widths of up to 10 m.   Veins are laminated or composite laminated and massive.   Rich shoots in the main veins plunge almost horizontally and correspond to the intersection of the main and leader veins.

Primary native gold is encased in quartz, locally in contact with calcite or fine grained galena.

The field is reported to have produced 56 tonnes of gold in total.

For detail see the reference(s) listed below.

The most recent source geological information used to prepare this summary was dated: 1995.    
This description is a summary from published sources, the chief of which are listed below.
© Copyright Porter GeoConsultancy Pty Ltd.   Unauthorised copying, reproduction, storage or dissemination prohibited.

  References & Additional Information
   Selected References:
Windh J  1995 - Saddle reef and related Gold mineralization, Hill End Gold Field, Australia: evolution of an auriferous vein system during progressive deformation: in    Econ. Geol.   v90 pp 1764-1775

Porter GeoConsultancy Pty Ltd (PorterGeo) provides access to this database at no charge.   It is largely based on scientific papers and reports in the public domain, and was current when the sources consulted were published.   While PorterGeo endeavour to ensure the information was accurate at the time of compilation and subsequent updating, PorterGeo takes no responsibility what-so-ever for inaccurate or out of date data, information or interpretations.

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