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Mount Radiant, Karamea, Buller District, West Coast Region, South Island, New Zealand

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Latitude & Longitude (WGS84): 41° 22' South , 172° 13' East
Latitude & Longitude (decimal): -41.36667,172.21667
Köppen climate type:Cfb : Temperate oceanic climate

Porphyry molybdenum deposit 20 km to the southeast of Karamea.

Fracture controlled quartz-sulphide veins forming reefs,with minor disseminated sulphides within the surrounding granite and adamellite contact, with hornfelsed and schistose metasediments.

The quartz reefs contain molybdenite, pyrite, chalcopyrite, bornite, tetrahedrite and Bi minerals, with quartz, orthoclase, and muscovite as gangue. The Anaconda Reef is 5 kilometres to the north and is similar except chalcopyrite is more prevalent, and molybdenum less so.

There are twenty separate lenticular quartz lodes, and quartz stock work areas, on the north side of Mount Radiant (exposed in Silver Creek), extending north to Mount Anaconda (exposed in Specimen Creek), and Mount Scarlett. Most of the lodes strike north north-east, and a few north-west. The mineralisation is associated with intrusions of alkali porphyritic granites, granodiorites and pegmatite veins into older gneisses, and coarse grained granites of the Karamea Suite, and into a roof pendant of hornfelsed and schistose metasediments.

Each of the reefs are a series of parallel quartz veins separated by country rock. Some lodes contain silver and gold. Wall rock is altered to quartz, sericite and chlorite along the vein margins.

The Mount Radiant lodes were discovered in 1904, the others by 1910. An attempt to mine the Mount Radiant lodes via an underground working was made across 1914-1915, but there was no ore production.

Mineral List

11 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

Calabrian - Zanclean
0.781 - 5.333 Ma

ID: 1314134
Undifferentiated Upper Blue Bottom Subgroup mudstone

Age: Cenozoic (0.781 - 5.333 Ma)

Stratigraphic Name: Blue Bottom Group; Upper Blue Bottom Subgroup

Description: Massive brown calcareous mudstone, minor sandstone, limestone and coal seams.

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

Lithology: Major:: {mudstone},Minor:: {sandstone, limestone, coal seams}

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

Pliocene - Late Miocene
2.588 - 11.62 Ma

ID: 1313378
Blue Bottom Group (Pliocene)

Age: Neogene (2.588 - 11.62 Ma)

Stratigraphic Name: Maui Supergroup; Blue Bottom Group; Blue Bottom Group (Pliocene)

Description: Massive muddy sandstone with mudstone and minor conglomerate.

Comments: Zealandia Megasequence Mainly Marine Sedimentary Rocks (Neogene)

Lithology: Sandstone, mudstone, conglomerate

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.


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A. Wodzicki (1960) Geology and mineralisation of the mt radiant area, North – West Nelson, New Zealand. New Zealand Journal of Geology and Geophysics, 3:3, 355-363.
Rabone, S.D.C. (1977) Molybdenum-base metal-bismuth mineralisation at Eliot Creek, Karamea Bend, and Taipo Spur, North-west Nelson, New Zealand. (Unpublished PhD thesis), University of Auckland, New Zealand.
Pirajno, F. (1985) Porphyry Mo and greisen W metallogeny related to the Karamea Batholith, South Island, New Zealand. New Zealand Journal of Geology and Geophysics, 28:1, 187-191.
Railton, G.L., Watters, W.A. (1990) Minerals of New Zealand, New Zealand Geological Survey Bulletin No. 104.
Christie, A.B., Brathwaite, R.L. (1995) Mineral Commodity Report 9-Molybdenum, Institute of Geological and Nuclear Sciences Ltd.

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