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Norfolk Mine, Tararu, Thames-Coromandel District, Waikato Region, North Island, New Zealand

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Latitude & Longitude (WGS84): 37° 6' 29'' South , 175° 32' 27'' East
Latitude & Longitude (decimal): -37.10823,175.54093
GeoHash:G#: rckufs9hb
Köppen climate type:Cfb : Temperate oceanic climate


Historic gold mine.

Located near the head waters of Sunbeam Creek, adjacent to the historic Dunedin, Day Dawn and Watchman leases. The Mindat co-ordinates are approximate.

The Star of California Reef dips steeply south-east in well bedded andesite flows and dacite breccia, variably propylitised. The quartz veined lode is one to eight feet wide, crustiform and banded. Gold-silver is found in a high value central seam, following a serpentine course through the lode.

Pyrargyrite and polybasite is noted in the deposit. The Au-Ag carrying rhodochrosite and minor rhodonite gives some of the ore a delicate pinkish colour. Pyrolusite is said to be abundant, staining some of the reef black in the upper levels.

Prior to 1887, the lease was a small holding worked by local companies, with some considerable profits from the high grading outcrops, and near surface stone. The Norfolk Gold Mining Company owned the lease between 1888 to 1895.

(Newspaper articles) State the lease was owned from 1895 by the Tararu Creek Company, registered in London, controlling the Norfolk, Sunbeam, Excelsior, and Dunedin mines.

(Fraser, 1910) When inspected in 1908, the Day Dawn and Norfolk leases had been combined under a company called the Day Dawn and Norfolk Mines Limited, registered in London. They controlled the mine from 1896 to at least 1908. The lease contained the Russell battery of no less than sixty stamps, formerly from nearby Tinkers Gully. The New Day Dawn and Norfolk Mines Limited is mentioned in 1912.


Mineral List


12 valid minerals.

Rock Types Recorded

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Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Miocene
5.333 - 23.03 Ma



ID: 1308094
Coromandel Group Miocene andesite and basaltic andesite lava

Age: Miocene (5.333 - 23.03 Ma)

Stratigraphic Name: Coromandel Group

Description: Andesite and basaltic andesite lava, tuff and tuff breccia, agglomerate and pyroclastic flow deposits; andesite, diorite and dacite dikes and subvolcanic intusions.

Comments: Zealandia Megasequence Extrusive and Intrusive Rocks (Neogene)

Lithology: Andesite, tuffite, tuff-breccia, agglomerate, pyroclastic material, andesite, diorite, dacite

Reference: Edbrooke, S.W., Heron, D.W., Forsyth, P.J., Jongens, R. (compilers). Geology Map of New Zealand 1:1 000 000. GNS Science Geological Map 2. [12]

Tortonian - Burdigalian
7.246 - 20.44 Ma



ID: 1315860
Kuaotunu Subgroup andesite and dacite (Coromandel Group) of Coromandel Volcanic Zone

Age: Miocene (7.246 - 20.44 Ma)

Stratigraphic Name: Kuaotunu Subgroup

Description: Basaltic andesite, andesite and dacite intrusives, flows, volcaniclastites and volcanic epiclastites.

Comments: Neogene igneous rocks. Age based on K-Ar

Lithology: Major:: {andesite},Minor:: {dacite}

Reference: Heron, D.W. . Geology Map of New Zealand 1:250 000. GNS Science Geological Map 1. [13]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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Press newspaper (1895) Mining News, Vol. LII, issue 9180, 10 August 1895.
Fraser, C. (1910) The Geology of the Thames Subdivision, Hauraki, Auckland. New Zealand Geological Survey, Bulletin No. 10 (New Series), New Zealand Government, Wellington, 136 pages.
Thames Star newspaper (1912) Thames Warden's Court, Vol. XLVII, issue 10368, 01 November 1912.
Simpson, M.P., Mauk, J.L., Merchant, R. (2011) Bonanza grade epithermal veins from the Coromandel and Thames district Hauraki Goldfield, Proceedings 2011 AusiMM New Zealand Branch Annual Conference 27-30 August, Queenstown, New Zealand.

 
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