Martha Mine, Waihi, Waikato, North Island, New Zealand

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The Martha Lode is a gold-silver orebody which is giant by world standards. This reef system is at least 1.6km long, 600m deep and up to 30m wide. This and other reefs and veins were extensively mined by the Martha Mine’s
underground operation between the 1880s and 1952.
However, many smaller veins stayed untouched and have been mined by open-pit methods since 1987. Rock with as little as one gram of gold per tonne can be mined economically using open pit modern technology.
Similar reef systems are being mined at Favona and at Trio as underground operations.

Mineral List

Acanthite Albite 'Apatite' Arsenopyrite Calcite Chalcopyrite 'Chlorite Group'

Epidote Galena Gold var: Electrum Illite Inesite Kaolinite 'K Feldspar var: Adularia'

Marcasite Molybdenite Pyrite Pyrrhotite Quartz var: Amethyst 'Smectite Group'

Sphalerite 'Tennantite-Tetrahedrite Series' Titanite 'Wad'

25 entries listed. 17 valid minerals.

References

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