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Lee Valley, Nelson, South Island, New Zealand

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Latitude & Longitude (WGS84): 41° 24' South , 173° 9' East
Latitude & Longitude (decimal): -41.40000,173.15000

Within the Permian ultramafics of the Nelson area is the famous Dun Mountain. Dunites, which readily alter, can be replaced or surrounded by zones of serpentine. In the Lee Valley serpentine is quarried for fertiliser.

Mineral List

2 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

Late Pleistocene
0.0117 - 0.126 Ma
OIS2 (Late Pleistocene) river deposits

Age: Pleistocene (0.0117 - 0.126 Ma)

Description: Clay bound gravels and minor fan deposits forming lowest aggradation surfaces above major rivers.

Comments: Late Pleistocene river deposits. Age based on absolute age calculated from stratigraphic age range

Lithology: Major:: {gravel},Minor:: {sand, mud, clay, boulders, peat}

Reference: Heron, D.W. . Geology Map of New Zealand 1:250 000. GNS Science Geological Map 1. [13]

Triassic - Late Permian
201.3 - 272.3 Ma
Maitai Group Triassic sedimentary rocks

Age: Phanerozoic (201.3 - 272.3 Ma)

Stratigraphic Name: Maitai Group; Maitai Group Triassic sedimentary rocks

Description: Volcaniclastic sandstone with interbedded siltstone, mudstone, tuff, conglomerate and rare limestone.

Comments: Eastern Province (Dun Mountain-Maitai Terrane) Rocks

Lithology: Sandstone, siltstone, mudstone, tuffite, conglomerate, limestone

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]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on 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 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.


Thornton, Jocelyn (1985): Field guide to New Zealand geology. p.53.

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