Latitude & Longitude (WGS84):	30° 49' 26'' South , 121° 23' 29'' East
Latitude & Longitude (decimal):	-30.82397,121.39125
GeoHash:	G#: qdw2dkdmm
Locality type:	Mine
Köppen climate type:	BSh : Hot semi-arid (steppe) climate

The Navajo Chief Gold Mine is 10 kilometres south-west of Kalgoorlie and just south of the Great Eastern Highway. The site encompasses the Navajo North, West and South pits.

Croesus Mining operated the site in 1999. Norton Goldfields mined here from 2011 to 2013, extracting 6.65 Mt for 212 000 ounces of gold. Indicated and Inferred Resources remaining is 32 Mt at 0.82 g/t yielding 848 000 ounces.

The mines are located on the north-south trending Centurion Fault, with the Navajo Porphyry in the northern section, and Navajo Sandstone southern sections of the mines. The Black Flag Beds are to the east and the Kurrawang Formation to the west.

Navajo contains four parallel north trending ore lodes within a broad structural corridor. Mineralisation is hosted in a sequence of north-west trending, steep west dipping, fine to coarse grained clastic pervasively altered sediments. Mineralisation plunges shallowly south, and individual bodies dip moderately west. One of the most easterly structures is called the 'Main Lode' which holds 75% of the resource.

The mineralisation here is hosted by an albite, ankerite, sericite, silica, hematite, pyrite, and magnetite alteration assemblage. The sequence is north-west trending, dipping steeply west, with most of the mineralisation at the eastern end of the mine called Main Lode. The high grade zones are within broader mineralisation halos controlled by shallow westerly dipping quartz-pyrite vein arrays.

Commodity List

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

Mineral List

7 valid minerals.

Rock Types Recorded

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

Neoarchean - Mesoarchean 2500 - 3200 Ma ID: 3187518

Archean volcanic rocks Age: Archean (2500 - 3200 Ma) Comments: Yilgarn Craton Lithology: Greenstone belt; mafic-ultramafic volcanic rocks 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]

Archean 2500 - 4000 Ma ID: 716092

felsic volcanic and volcaniclastic rocks 74288 Age: Archean (2500 - 4000 Ma) Description: Quartz-feldspar (meta-) porphyry, porphyritic microgranite; rhyolite, dacite, rhyodacite, andesite; agglomerate, breccia tuff; felsic schist; felsic volcanic and volcaniclastic rocks; dacite and rhyodacite tuff; dacite porphyry; Comments: igneous volcanic; igneous felsic volcanic; synthesis of multiple published descriptions Lithology: Igneous volcanic; igneous felsic volcanic 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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