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Holyoake Valley, Pikikiruna Range, Tasman Region, South Island, New Zealand

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Latitude & Longitude (WGS84): 41° 1' 14'' South , 172° 58' 35'' East
Latitude & Longitude (decimal): -41.02083,172.97639
Köppen climate type:Cfb : Temperate oceanic climate

Contact aureole of the Canaan Granodiorite.

Braithwaite et al. (1976) described the wollastonite outcrop on the southern side of the Holyoake Valley, and its possible economic significance, but did
not discuss the physical conditions of its formation. They recorded scattered tiny crystals of vesuvianite within the main wollastonite body. Later, pale-green vesuvianite was found in calcsilicate rock (P43240) as numerous crystals up to 3 mm across. This rock, however, is known only from a sample discovered on the spoil heap during excavation of the adit at the locality, and its relations to the other rocks present are not known. The vesuvianite is concentrated in an irregular layer up to 15mm wide in the sample and is accompanied by smaller amounts of garnet, wollastonite, quartz, calcite, diopside, and pyrite (Fig. 4A). Wollastonite, quartz, and calcite are adjacent to one another in this part of the rock, whereas within the vesuvianite-free part, wollastonite is locally intergrown with quartz and is also contiguous with calcite.

Mineral List

10 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

Cenomanian - Berriasian
93.9 - 145 Ma

ID: 1336590
Separation Point Suite biotite granite

Age: Cretaceous (93.9 - 145 Ma)

Stratigraphic Name: Separation Point Suite

Description: Equigranular biotite granite.

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

Lithology: Major:: {granite},Minor:: {granodiorite}

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

Early Cretaceous
100.5 - 145 Ma

ID: 1311734
Separation Point Suite felsic intrusive rocks

Age: Early Cretaceous (100.5 - 145 Ma)

Stratigraphic Name: Separation Point Suite

Description: Granite, granodiorite and tonalite with subordinate leucogranite, quartz diorite and monzodiorite; locally foliated to gneissic.

Comments: Western Province (Tuhua Intrusives) Rocks

Lithology: Granite, granodiorite, tonalite, leucogranite, quartz diorite, monzodiorite

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]

Ordovician - Cambrian
443.8 - 541 Ma

ID: 3190452
Paleozoic volcanic and intrusive rocks

Age: Paleozoic (443.8 - 541 Ma)

Lithology: Chert,limestone,tuffaceous sandstone,argillite,amphibolite,schist

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]

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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Braithwaite, J.C., Buckenham, M.H., Watters, W.A. (1976) Holyoake Valley wollastonite. Industrial minerals and rocks 7. Wellington, Department of Scientific and Industrial Research, pp. 9-19.
Railton, G.L., Watters, W.A. (1990) Minerals of New Zealand, New Zealand Geological Survey Bulletin No. 104.
Watters, W.A. (1995) Petrography and genesis of a wollastonite body and its associated rocks at Holyoake Valley, Nelson, New Zealand. New Zealand Journal of Geology Geophysics. 38:3, 315–323.

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