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

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Latitude & Longitude (WGS84): 37° 4' 58'' South , 175° 32' 48'' East
Latitude & Longitude (decimal): -37.08292,175.54681
GeoHash:G#: rckv49m23
Köppen climate type:Cfb : Temperate oceanic climate


Historic gold mine.

Located on the head-waters of the Argosy Stream, a small northern tributary of the upper Tararu Stream.

The country rock is propylitised andesite, hosting auriferous veins of white quartz, containing small pockets of rich specimen stone gold, with blue-grey patches and streaks of pyrite containing Au-Ag values.

When inspected in 1908 the workings had collapsed. Crushings only occurred in 1897 and 1903. Most work was what was called the No. 1 reef about 9 inches thick. The No. 5 reef is also mentioned, but at only 4 inches thick. A shaft was sunk to a depth of 400 feet, and development work across 1895-1898 was inevitably described by the mine manager as 'promising'.

By 1898 the Argosy Gold Mining Company had been liquidated, with Samuel Cochrane McKay seeking forfeiture of the lease in the warden's court. In 1902, Joseph Govan and John Gibb applied for the claim, with a subsequent small crushing of picked stone.



Mineral List


3 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



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References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Auckland Star newspaper (1895) Tararu, Vol. XXVI, issue 265, 06 November 1895.
Marlborough Express newspaper (1897) Mining News, Vol. XXXII, issue 46, 24 February 1897.
Auckland Star newspaper (1897) Thames Notes. Argosy and Silas, Vol. XXVIII, issue 45, 24 February 1897.
Auckland Star newspaper (1898) Warden's Court, Vol. XXIX, issue 247, 19 October 1898.
Thames Advertiser newspaper (1898) Application for Special Claim, Vol. XXIX, issue 9184, 01 November 1898.
Auckland Star newspaper (1902) Warden's Court, Vol. XXXIII, issue 82, 08 April 1902.
New Zealand Herald newspaper (1902) Argosy Claim, Vol. XXXIX, issue 12004, 28 June 1902.
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.

 
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