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Red Mountain (Big Red Hill), Westland District, West Coast Region, South Island, New Zealandi
Regional Level Types
Red Mountain (Big Red Hill)Mountain
Westland DistrictDistrict
West Coast RegionRegion
South IslandIsland
New ZealandCountry

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Latitude & Longitude (WGS84): 44° 19' 14'' South , 168° 20' 42'' East
Latitude & Longitude (decimal): -44.32083,168.34500
GeoHash:G#: r8peyg9h6
Locality type:Mountain
Köppen climate type:Cfb : Temperate oceanic climate

Ophiolite assemblage with peridotite, dunite, and serpentinite.

Regions containing this locality

Pacific PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

4 valid minerals.

Detailed Mineral List:

Formula: Ni3Fe
Reference: Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.
Formula: CaMgSi2O6
Reference: Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.
Formula: Ni
Reference: Dekov, V. (2006) Native nickel in the TAG hydrothermal field sediments (Mid‐Atlantic Ridge, 26° N): Space trotter, guest from mantle, or a widespread mineral, connected with serpentinization?. Journal of Geophysical Research, 111(B05103).

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Group 9 - Silicates

List of minerals arranged by Dana 8th Edition classification

Metals, other than the Platinum Group
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra

List of minerals for each chemical element

H ClinochloreMg5Al(AlSi3O10)(OH)8
O ClinochloreMg5Al(AlSi3O10)(OH)8
O DiopsideCaMgSi2O6
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg DiopsideCaMgSi2O6
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si DiopsideCaMgSi2O6
Ca DiopsideCaMgSi2O6
Fe AwaruiteNi3Fe
Ni AwaruiteNi3Fe
Ni NickelNi

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

Kungurian - Artinskian
272.95 - 290.1 Ma

ID: 1367589
Undifferentiated Dun Mountain Ultramafics Group peridotite

Age: Cisuralian (272.95 - 290.1 Ma)

Stratigraphic Name: Dun Mountain Ultramafics Group

Description: Massive, locally layered, partly serpentinised harzburgite and minor dunite; orthopyroxene pegmatite, dolerite and rodingite dikes.

Comments: Basement (Eastern Province) igneous rocks. Age based on U-Pb dating

Lithology: Major:: {peridotite},Minor:: {harzburgite, dunite, serpentinite, pyroxenite, dolerite, rodingite}

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

Early Permian
272.95 - 298.9 Ma

ID: 1312114
Dun Mountain Ultramafics Group of Otago and Southland

Age: Cisuralian (272.95 - 298.9 Ma)

Stratigraphic Name: Dun Mountain Ultramafics Group

Description: Variably serpentinised harzburgite, dunite, pyroxenite and gabbro; serpentinite; commonly extensively sheared and deformed into melange; cut by a variety of dikes.

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

Lithology: Harzburgite, dunite, pyroxenite, gabbro, serpentinite, melange

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]

541 - 4000 Ma

ID: 3186912
Precambrian sedimentary rocks

Age: Precambrian (541 - 4000 Ma)

Lithology: Paragneiss

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


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Railton, G.T., Watters, W.A. (1990) Minerals of New Zealand. New Zealand Geological Survey Bulletin 104, 89 pages.

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