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Copied from historical material presented in
Homestake Mining Company's 2001-2002 McLaughlin Mine Annual Monitoring Report (aka, the "Gold Edition" CD-ROM) |
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Copied from historical material presented in
Homestake Mining Company's 2001-2002 McLaughlin Mine Annual Monitoring Report (aka, the "Gold Edition" CD-ROM) |
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| The McLaughlin deposit is the
largest gold discovery of the 20th century in California. The
historic ore reserve exceeded 4 million ounces of contained gold, from
which approximately 3.3 million ounces will be recovered. The McLaughlin
deposit is a world-class gold orebody, and one of the world's finest examples
of a hot springs-type epithermal precious metals system. When discovered,
the deposit was remarkably well preserved, with an intact siliceous sinter
capping the central portion of the mineralized outcrop. The subaerially
deposited hot springs sinter terraces marked the paleosurface of the Pleistocene
hot springs that formed the deposit. The presence of sinter was especially
important in demonstrating that this was a fully preserved epithermal system
from the top down… a rarity in deposits such as this, and an opportunity
for scientists around the world to study this fascinating geologic feature
as it was mined.
The links below will guide you through some of the visual highlights of the McLaughlin mine geology. We are fortunate to have an excellent photographic record of the deposit, and these pages are provided to offer the reader a small glimpse at the amazing geology of the McLaughlin mine and the surrounding Knoxville Mining District. Note: The "Geology of the McLaughlin Deposit" page is graphics-intensive, so it may require a few seconds to fully load. |
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