Skip to main content
Conference Proceedings

Narrow Vein Mining Conference 2012

Conference Proceedings

Narrow Vein Mining Conference 2012

PDF

Review of the Advances Made in Geological Understanding and Mining Practices within the Costerfield Narrow Vein Antimony-Gold Mine, Victoria, Australia

Various antimony-gold deposits have been mined at the Costerfield gold-antimony field in Central Victoria, since its discovery in the mid-1860s. Production has been sporadic and highly dependent on metal prices and developments in extractive technology. The Augusta underground mine at Costerfield in Central Victoria has been in operation since mid-2006.The stratigraphy of the Silurian Darraweit Guim Province comprise a very thick sequence of turbidites, which have been folded and faulted through east-west shortening typical of the Lachlan Fold Belt. Arotation of stress fields and subsequent north-south shortening modified the geometry of the region into long amplitude domes with cross cutting faults. The Costerfield dome lies between the Mount William Fault and Moormbool Fault. The pervasive antimony-gold mineralisation occurs in north south trending stibnite-quartz veins hosted within the anticline hinge and faulting through the western limb of the Costerfield Dome. The Augusta deposit comprises a cluster of west dipping stibnite-quartz veins within the southern plunge and western limb of the Costerfield dome. There are a number of structural controls that have dictated the propagation of steep north plunging ore shoots that comprise a dilation in vein width as well as an increase in gold and antimony grade. The foremost control is that of the interaction between the late stage north-west dipping faults with the west dipping mineralised structures. Petrographic analysis suggests the deposit genesis involved an influx of Sb-rich solutions sweating gold from auriferous arsenopyrite, precipitating a near homogenous blend of nanoscopic to microscopic gold particulate in stibnite.In order to adapt to a dynamic model, resulting from the high variability within this narrow vein deposit, there have been continual advances in geological, geotechnical and mining practises in order to maximise economic extraction of the ore._x000D_
*This is an abstract only. No full paper was prepared for this abstract* CITATION:Davis, C, 2012. Review of the advances made in geological understanding and mining practices within the Costerfield narrow vein antimony-gold mine, Victoria, Australia, in Proceedings Narrow Vein Mining 2012, pp 79-80 (The Australasian Institute of Mining and Metallurgy: Melbourne).
Return to parent product
PD Hours
Approved activity
  • Published: 2012
  • PDF Size: 0.028 Mb.
  • Unique ID: P201202010

Our site uses cookies

We use these to improve your browser experience. By continuing to use the website you agree to the use of cookies.