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

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Latitude & Longitude (WGS84): 37° 7' 49'' South , 175° 33' 7'' East
Latitude & Longitude (decimal): -37.13040,175.55220
GeoHash:G#: rckufb95y
Köppen climate type:Cfb : Temperate oceanic climate


The Arrindell Syndicate was a Glasgow concern, contolling an area of 216 acres from August 1904. It covered former claims Gloucester, Gloucester Extended, George Turnbull in the Lucky Hit Stream, a tributary of the Karaka Stream.

It was formerly worked by the Auckland Gold Mining Company (1887), Lucky Hit Gold Mining Company (1888-1889), Enterprise Syndicate (1892-1893), and the Gloucester Gold Mining Company of London (1898-1902), and finally the Arrindell Syndicate 1905-1908, altogether producing 481 tonnes of ore for 1078 ounces of gold.

No company lasted long as overall the grade of ore was poor, with occasional rich patches. The Arrindell Syndicate had a five stamp battery on the property, containing several quartz veins, however they were prospecting only, little gold had been found, and many of the workings had collapsed.

The reefs included the Lucky Hit, Hansens, Greenstone, Mary Helen, Pride of Parnell, all trending north-east to south-west. The ore contained pyrite, sphalerite, chalcopyrite, gold, enargite, barite, with free gold in occasional patches of specimen stone. Enargite was minor and not associated with gold. Secondary pyrite lines cavities, and as films cementing fractured quartz. Jasperoid quartz is frequently found in the upper areas of the Mary Helen Reef, near a pocket of rich gold.



Mineral List


7 valid minerals.

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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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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