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Santa Gold Mine (Craze; Cressfield), Randalls, Mount Monger Goldfield, Kalgoorlie-Boulder Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 31° 2' 43'' South , 122° 12' 47'' East
Latitude & Longitude (decimal): -31.04535,122.21316
GeoHash:G#: qdqzmh2gt
Locality type:Mine
Köppen climate type:BSh : Hot semi-arid (steppe) climate


The Santa Gold Mine is 20 kilometres east of the Randall processing plant. It is an open pit, with a smaller adjoining pit to the south, and small adjoining pit to the north. The pits are called Santa, Craze and Cressfield. The Cock-Eyed Bob, Maxwells and Rumble mines are to the south-west.

Santa has an Indicated Resource of 3716.8 Mt at 2.2 g/t yielding 267 200 ounces; and an Inferred Resource of 1696.2 Mt at 2.5 g/t yielding 135 600 ounces of gold.

The deposit is located in metamorphosed banded iron formation, that forms a minor component of the Mount Belches greywacke. Two known banded iron formation members host all the known gold deposits in the area. The first is the upper outcropping Santa member, and second the poorly exposed Maxwell member, both present in the Santa area.

The Santa group is part of the most north-east antiformal structure. There is a light chevron folding pattern of banded iron formation across the entire Randall area. Rumble and Maxwells is in the central antiformal structure.

Santa is located in the core of the anticlinal fold nose, on the most easterly chevron fold in the area. The deposit is aligned with the north-west striking axial plane of the fold.

Mineralisation at Santa is hosted in multiple packages of interbedded magnetite and amphibole rich banded iron formation, with bedded greywacke. The mineral zone is magnetite and pyrrhotite rich banded iron formations, closely associated with coarse grained and locally massive arsenopyrite. Gold is very visible within the sulphide rich banded iron formation units.






Commodity List

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


Mineral List


8 valid minerals.

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

Archean
2500 - 4000 Ma



ID: 811340
sedimentary rocks 74322

Age: Archean (2500 - 4000 Ma)

Description: Phyllitic schist, siltstone, sandstone, greywacke, pelite, conglomerate, quartzite, phyllite, shale, slate, claystone, chert, minor felsic volcanic and volcaniclastic rocks; arkose, para- and orthoamphibolites; rare banded iron formation

Comments: argillaceous detrital sediment; sedimentary siliciclastic; synthesis of multiple published descriptions

Lithology: Argillaceous detrital sediment; 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]

Neoarchean - Mesoarchean
2500 - 3200 Ma



ID: 3189181
Archean sedimentary rocks

Age: Archean (2500 - 3200 Ma)

Comments: Yilgarn Craton

Lithology: Sedimentary 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]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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