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Pepin Island, Nelson Region, South Island, New Zealand

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Latitude & Longitude (WGS84): 41° 9' 1'' South , 173° 25' 34'' East
Latitude & Longitude (decimal): -41.15051,173.42626
Köppen climate type:Cfb : Temperate oceanic climate

The island has an area of approximately 6 sq kilometres and is privately owned.

Pepin Island is 15 kilometres north of Nelson, and is connected to the mainland at Cable Bay by a short causeway. The island is owned by descendants of German business woman, Dr. Viola von Hohenzollern. There have been occasional public open days arranged.

The reference (Lauder, 1964) is a detailed article on the general geology of Pepin Island, rather than a specific specimen site. The abstract states the following.

Rock types found on the island include Echinus Granite, Platform Gneiss, and Fall Conglomerate of the Pepin Group. This is intruded by a plug, and radial dyke swarm of hornblende, and quartz-biotite andesite of the Palisade Andesite Formation.

The Tasman Group or Cable Granodiorite contains quartz, diorite, tonalite, and hornblende granodiorite, cross-cut by veins of augite lamprophyre, hornblende granite, hornblende granophyre, and granophyric hornblende pegmatite. Albite-epidote-quartz veins are common, and pyrite is noted.

Mineral List

18 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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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

0 - 2.588 Ma

ID: 3187203
Cenozoic sedimentary rocks

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Conglomerate,glacial deposits,gravel

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]

145 - 201.3 Ma

ID: 1312940
Tasman Intrusives Group

Age: Jurassic (145 - 201.3 Ma)

Stratigraphic Name: Tasman Intrusives Group

Description: Granodiorite, tonalite and quartz diorite.

Comments: Western Province (Tuhua Intrusives) Rocks

Lithology: Granodiorite, tonalite, quartz diorite

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]

Toarcian - Norian
174.1 - 228 Ma

ID: 1350938
Palisade Andesite (Tasman Intrusives)

Age: Mesozoic (174.1 - 228 Ma)

Stratigraphic Name: Palisade Andesite

Description: Hornblende and quartz-biotite andesite.

Comments: Basement (Median Batholith) igneous rocks. Age based on absolute age calculated from stratigraphic age range

Lithology: Major:: {andesite}

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.


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Lauder, W.R. (1964) The geology of Pepin Island and part of the adjacent mainland. New Zealand Journal of Geology and Geophysics, 7:1, 205-241.
Railton, G.L., Watters, W.A. (1990) Minerals of New Zealand, New Zealand Geological Survey Bulletin No. 104.

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