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Flat Top Quarry, Wainui, Auckland Region, North Island, New Zealand

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Latitude & Longitude (WGS84): 36° 35' 15'' South , 174° 33' 21'' East
Latitude & Longitude (decimal): -36.58765,174.55600
GeoHash:G#: rckpu57v3
Locality type:Quarry
Köppen climate type:Cfb : Temperate oceanic climate


Quarry in Tangihua volcanics (basalt, quartz porphyry, and pillow lavas). Aggregate quarry. Active.

Dodecahedron analcime is found with fine hair like masses of mordenite on top of heulandite. Apophyllite with chlorite and rarely zeolites, sometimes projecting from stilbite. Calcite found alone and with other zeolites. Dog tooth form the most common, and rarely pseudo-cubes. Chlorite by itself and sometimes with heulandite and/or apophyllite, as minute rosettes. Heulandite by itself and with other zeolites, nearly always as coffin shaped crystals. Mordenite as fine hair like masses on heulandite lined vugs, and rarely by itself. Stilbite, most commonly with calcite, rarely by itself, and with other zeolites. Large sheafs or single crystals, the latter cleaner.



Mineral List


3 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

Quaternary
0 - 2.588 Ma



ID: 3186104
Cenozoic sedimentary rocks

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Gravel,sand

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]

Oligocene - Eocene
23.03 - 56 Ma



ID: 1311836
Motatau Complex

Age: Paleogene (23.03 - 56 Ma)

Stratigraphic Name: Motatau Complex

Description: Micritic muddy limestone, calcareous mudstone and glauconitic sandstone.

Comments: Zealandia Megasequence Allochthonous Rocks

Lithology: Limestone, mudstone, sandstone

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]

Priabonian - Cenomanian
33.9 - 100.5 Ma



ID: 1362648
Hukerenui Mudstone (Mangakahia Complex) in Northland Allochthon

Age: Phanerozoic (33.9 - 100.5 Ma)

Stratigraphic Name: Hukerenui Mudstone

Description: Red, brown, green and grey, typically noncalcareous, commonly highly sheared mudstone, with small serpentinite bodies.

Comments: Allochthonous rocks. Age based on absolute age calculated from stratigraphic age range

Lithology: Major:: {mudstone}

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

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Von Blaramberg, K. (1987), Micro Mineral Field Trip, Symposium 1987.

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