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Mangakirikiri cinnabar prospect, Thames, Thames-Coromandel District, Waikato Region, North Island, New Zealand

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Latitude & Longitude (WGS84): 37° 7' 23'' South , 175° 35' 25'' East
Latitude & Longitude (decimal): -37.12324,175.59046
GeoHash:G#: rckug9vj6
Köppen climate type:Cfb : Temperate oceanic climate


Sinter deposits consisting of opaline silica, with associated pyrite-marcasite-arsenopyrite, cinnabar, rare stibnite and chalcopyrite. The sinter deposits are interbedded with sporadic mineralisation in variable propylitised and argillic altered andesite. Freedman in 1985 and 1990 assayed the material at Hg up to 2.64%, Au up to 0.08 ppm, and As up to 440 ppm, with no silver or antimony detected.

(Fraser, 1910) states occurs in a band dipping 10 degrees south-east, one to ten inches wide containing a few lenses of cinnabar at the intersections of irregularly inclined clay filled fractures, up to 25% mercury, but the quantity is small.

(Thames Star newspaper, 1898) notes at least 8 lodes on the south-west side of the Otanui Stream area, a small tributary off the Mangakirikiri Stream. One quartz lode is described trending north-south, dipping 40-48 degrees east, 3-4 feet wide. Little information is given on the quality or quantity of the mineral found.

The cinnabar deposits were discovered by the Lowrie brothers and Long (surnames) in 1897. Two drives, and surface pottering is noted shortly after. The Thames Quicksilver Mines Limited is formed in 1899 to prospect the deposits, then nothing more is heard of this entity. It is widely reported an American syndicate plans to take over the deposits in 1906, but this also comes to nought.

The Mangakirikiri cinnabar claim is registered with the warden in 1915, to prospect the specimen cinnabar, and 'good general dirt', and this also dis-appears from history no sooner as it is formed.

The area is not easily accessible.


Mineral List


8 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

Quaternary
0 - 2.588 Ma



ID: 3187411
Cenozoic volcanic rocks

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Ignimbrite(s); felsic volcanic rocks; rhyolite

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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)
Auckland Star newspaper (1897) Our Goldfields. Discovery of Cinnabar, Vol. XXVIII, issue 249, 27 October 1897.
Thames Star newspaper (1898) Cinnabar Lode at Kauaeranga, Vol. XXX, issue 9079, 27 May 1898.
Thames Star newspaper (1899) Mining News. Cinnabar Find, Vol. XXX, issue 9330, 25 March 1899.
Star newspaper (1899) Auckland Quicksilver, issue 6487, 16 May 1899.
Auckland Star newspaper (1901) Cinnabar, Vol. XXXII, issue 106, 06 May 1901.
Northern Advocate newspaper (1906) Cinnabar at Thames, 19 September 1906.
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.
Auckland Star newspaper (1915) Cinnabar Claim Granted, Vol. XLVI, issue 168, 16 July 1915.
Christie, T., Brathwaite, B. Mineral Commodity Report 8- Mercury, Institute of Geological and Nuclear Sciences Limited.

 
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