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Waiotahi Mine, Thames, Thames-Coromandel, Waikato, North Island, New Zealand

Stibnite
Waiotahi Mine, Thames, Thames-Coromandel, Waikato, North Island, New Zealand

Latitude: 37°7'31"S
Longitude: 175°32'43"E

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The Thames mining area involved exploitation of well defined quartz veins with local bonanza gold concentrations.
Many mine excavations are now exposed as underground workings, shallow tunnels, or quarries, although these are commonly dry. Groundwater drains from the host rock-mass and is chemically affected by that rock, so that surface seepages reflect the chemistry of the immediate host rock. Water issuing from pyritic altered rock near mineralised zones on Una Hill and Waiotahi mine is acidic, with pH as low as 2.
Metal Distribution in historic mine wastes, Coromandel Peninsula. Craw & Chappell, NZJGG, 2000.

Various mines in the Waiotahi area produced in excess of 500,000 ounces of gold (McMahon, 1986)

Mineral List

Albite
Alunite
Ankerite
Baryte

Calcite
Chalcanthite
Chalcopyrite
Epsomite

Gold
var: Electrum
Kaolinite
Malachite
Melanterite

Pyrargyrite
Pyrite
Quartz
Stibnite

16 entries listed. 15 valid minerals.

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References

NcMahon, T. 1986: Report on Waiotahi-Moanataiari area, Thames Goldfield: for Mineral Reources NZ Ltd. Unpublished mining company report, Ministry of Commerce MR502.

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 29th Jul 2012 02:10:23