|Latitude & Longitude (WGS84):||37° 4' 58'' South , 175° 32' 48'' East|
|Latitude & Longitude (decimal):||-37.08292,175.54681|
|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.
3 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
5.333 - 23.03 Ma
|Coromandel Group Miocene andesite and basaltic andesite lava|
Age: Miocene (5.333 - 23.03 Ma)
Stratigraphic Name: Coromandel Group
Comments: Zealandia Megasequence Extrusive and Intrusive Rocks (Neogene)
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. 
|Tortonian - Burdigalian|
7.246 - 20.44 Ma
|Kuaotunu Subgroup andesite and dacite (Coromandel Group) of Coromandel Volcanic Zone|
Age: Miocene (7.246 - 20.44 Ma)
Stratigraphic Name: Kuaotunu Subgroup
Reference: Heron, D.W. . Geology Map of New Zealand 1:250 000. GNS Science Geological Map 1.