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Orebody 23 (OB 23), Newman, East Pilbara Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 23° 18' 52'' South , 119° 51' 0'' East
Latitude & Longitude (decimal): -23.31449,119.85010
GeoHash:G#: qev5r78pm
Owned/operated by:BHP (85%), Mitsui Iron (10%)
Locality type:Pit (Care and Maintenance) - last checked 2018
Köppen climate type:BWh : Hot deserts climate


Iron ore mine. Satellite mine for BHP Billiton's Mount Whaleback operations. Orebody 23 is locaed 14kms ENE of Newman.

The ore body at 23 is 600 metres long, hosted by the Dales Gorge Member of the Brockman Iron Formation. It is on the north limb, near the nose of a major vertically dipping F2 anticline, with parasitic F2 folds on overturned limbs. The deposit is bounded to the west by a north north-east trending D4 fault, north by a dolerite dyke that follows the Whaleback Shale Member.

Ore is microplaty hematite down a depth of 25 metres from the surface, which then grades into un-enriched banded iron formation. Microplaty hematite has developed in the D2 unit of the Dales Gorge Member, while the barren Joffre Member forms the north or Hanging Wall limit of the pit.


Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


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

Siderian - Neoarchean
2300 - 2800 Ma



ID: 3185955
Archean-Paleoproterozoic sedimentary and volcanic rocks

Age: Precambrian (2300 - 2800 Ma)

Stratigraphic Name: Hamersley Group

Comments: Hamersley Basin

Lithology: Strataform assemblage(s); felsic volcanic rocks; chert,carbonate,iron formation,shale

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]

Siderian
2300 - 2500 Ma



ID: 855506
Brockman Iron Formation

Age: Siderian (2300 - 2500 Ma)

Stratigraphic Name: Brockman Iron Formation

Description: Banded iron-formation, chert, mudstone and siltstone.

Comments: sedimentary non-carbonate chemical or biochemical; argillaceous detrital sediment; synthesis of multiple published descriptions

Lithology: Sedimentary non-carbonate chemical or biochemical; argillaceous detrital sediment

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



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