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Tokatoka, Kaipara District, Northland Region, North Island, New Zealand

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Latitude & Longitude (WGS84): 36° 3' 30'' South , 173° 58' 37'' East
Latitude & Longitude (decimal): -36.05847,173.97717
GeoHash:G#: rcedygy21
Köppen climate type:Cfb : Temperate oceanic climate


Contact-metamorphic mineralisation between andesite dikes and limestone of the Onerahi Formation (Lower Tertiary).
The harmotome and analcime described by Black (1969) are from andesite dikes at Rehia and Maungarahu in the Tokatoka district.


Mineral List

Mineral list contains entries from the region specified including sub-localities

31 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

Early Miocene - Cretaceous
15.97 - 145 Ma



ID: 1310911
Northland Allochthon melange

Age: Phanerozoic (15.97 - 145 Ma)

Stratigraphic Name: Waka Supergroup

Description: Melange of mixed Early Cretaceous to Early Miocene lithologies in a sheared mudstone matrix, locally with included tectonic blocks of local and exotic origin; associated with Early Miocene emplacement of the Northland allochthon.

Comments: Zealandia Megasequence Allochthonous Rocks

Lithology: Melange

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]

Aquitanian - Cenomanian
20.44 - 100.5 Ma



ID: 1357591
Melange of Northland Allochthon

Age: Phanerozoic (20.44 - 100.5 Ma)

Stratigraphic Name: Northland Allochthon

Description: Melange, comprising a matrix of sheared mudstone with included tectonic blocks of Northland Allochthon, Te Kuiti Group and Waitemata Group lithologies.

Comments: Allochthonous rocks

Lithology: Major:: {melange}

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


Localities in this Region
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New Zealand

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)
Mason, B. (1957) Larnite, scawtite, and hydrogrossular from Tokatoka, New Zealand. American Mineralogist 42, 379-392.
Harker, R.I. (1965) Scawtite and its synthesis. Mineralogical Magazine, vol. 34, n° 268, 232-236 (referring to Mason, 1957).
Black, P.M. (1969) Rankinite and kilchoanite from Tokatoka, New Zealand. Mineralogical Magazine 37, 517-519.
Black, P.M. (1969) Harmotome from the Tokatoka district, New Zealand. Mineralogical Magazine 37, 453-458.
Baker, C.K. and Black, P.M. (1980) Assimilation and metamorphism at a basalt-limestone contact, Tokatoka, New Zealand. Mineralogical Magazine 43, 797-807.
Courtney, S.F. and Rodgers, K.A. (1988) Herschelite from Tokatoka, New Zealand. Neues Jahrbuch für Mineralogie, Monatshefte 1988, 433-437.
Railton, G.L. & Watters, W.A. (1990) Minerals of New Zealand, New Zealand Geological Survey Bull. #104 (in part).

Mineral and/or Locality  
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