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Seppelt pipes, Carson River Station, Wyndham-East Kimberley Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 14° 28' 42'' South , 127° 21' 10'' East
Latitude & Longitude (decimal): -14.47836,127.35293
GeoHash:G#: qv6t9ur96
Locality type:Group of Pipes
Köppen climate type:Aw : Tropical savanna, wet


These kimberlite pipes are 80 kilometres east south-east of Kalumburu, in the King George River region of the northern Kimberley. The area is extremely remote and there is virtually no viable land based access.

The reference notes three kimberlite pipes called Seppelt 1, 2 and 5. Seppelt 1 consists of two lobes , 100 metres apart, with diamond grades averaging 38.7 ct/ht.

Seppelt 2 is 5 kilometres south-west of 1. The pipe contains an upper 36 metre infill gravels of 50 ct/ht average diamond grade. Under this is weathered kimberlite to 200 metres from the surface with an average 211 ct/ht diamond grade. Several large diamonds are said to have been recovered including a clear white gem quality 8.5 ct stone.

The reference does not locate Seppelt 5. It is a brecciated kimberlite fissure, 750 metres long by 1.4 metres average wide. The yield was 15 ct from 70 t of ore sampled, with the largest stone at 1.1 ct. No mining has taken place at the locations.


Mineral List


1 valid mineral.

Rock Types Recorded

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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

Statherian - Paleoproterozoic
1600 - 2500 Ma



ID: 3184928
Paleoproterozoic sedimentary rocks

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Kimberley Group

Comments: Kimberley Basin

Lithology: Sandstone,siltstone

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]

Paleoproterozoic
1600 - 2500 Ma



ID: 693813
Pentecost Sandstone

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Pentecost Sandstone

Description: Blocky medium-grained quartz sandstone, minor fine- to medium-grained feldspathic sandstone; micaceous and glauconitic sandstone, shale pellet conglomerate

Comments: sedimentary siliciclastic; synthesis of multiple published descriptions

Lithology: Sedimentary siliciclastic

Reference: Raymond, O.L., Liu, S., Gallagher, R., Zhang, W., Highet, L.M. Surface Geology of Australia 1:1 million scale dataset 2012 edition. Commonwealth of Australia (Geoscience Australia). [5]

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.

References

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Fetherston, J.M., Stocklmayer, S.M., Stocklmayer, V.C. (2013) Gemstones of Western Australia. Geological Survey of Western Australia, Mineral Resources Bulletin 25, 306p (at p26).

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