Conference Proceedings
1997 AusIMM New Zealand Branch Annual Conference
Conference Proceedings
1997 AusIMM New Zealand Branch Annual Conference
West Coast Placer Mining
The placer mining industry of the West Coast region of the
South Island is based largely around the production of alluvial gold, although
other valuable minerals are also present. Since the first major discoveries in
1864-65, reported gold production has totalled around 264 t (8.5 Moz). During
the past 10 years, annual production has totalled around 1460 kg (47,000 oz). It
is anticipated that gold production over the next three years will continue at a
level of 1400-1800 kg.
Annual gold production peaked
during 1866 at approximately 17,170 kg (550,000 oz) and has not exceeded 100,000
oz since 1885. This reflects the ease with which gold was won from shallow, rich
deposits that were present at many localities. Subsequently, there has been a
general decline in the availability of this type of deposit, a trend that will
continue in the future.
This paper outlines the present
state of placer mining in the West Coast region, gives some historical
background to the industry and briefly predicts future
trends.
South Island is based largely around the production of alluvial gold, although
other valuable minerals are also present. Since the first major discoveries in
1864-65, reported gold production has totalled around 264 t (8.5 Moz). During
the past 10 years, annual production has totalled around 1460 kg (47,000 oz). It
is anticipated that gold production over the next three years will continue at a
level of 1400-1800 kg.
Annual gold production peaked
during 1866 at approximately 17,170 kg (550,000 oz) and has not exceeded 100,000
oz since 1885. This reflects the ease with which gold was won from shallow, rich
deposits that were present at many localities. Subsequently, there has been a
general decline in the availability of this type of deposit, a trend that will
continue in the future.
This paper outlines the present
state of placer mining in the West Coast region, gives some historical
background to the industry and briefly predicts future
trends.
Contributor(s):
R V Rose
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- Published: 1997
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