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Spargo's Reward Gold Mine, Spargoville, Coolgardie Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 31° 14' 25'' South , 121° 28' 13'' East
Latitude & Longitude (decimal): -31.24037,121.47034
GeoHash:G#: qdqqk0ggx
Locality type:Mine
Köppen climate type:BSk : Cold semi-arid (steppe) climate


The mine is at the site of the old town. Little remains now other than a water tank and a couple of shacks. The mine is about 200 metres south-west of the shacks, and consists of an old overgrown open pit, large area of sands, and minor equipment and building foundations. Modern exploration and cleared areas are found just north of the former town. All are west of the Coolgardie-Norseman Highway, and just south of the Nepean Road turn-off.

The mine was developed in 1935, by the newly formed Spargo's Reward Gold Mines (1935) NL. By 1938 there was a processing plant, cyanide plant, a main shaft to 200 feet depth with levels 1 and 2, an open cut which was almost exhausted by this stage, and No 2 stope from the old No 4 shaft.

Mining continued until December 1 1942, when it closed due to labour shortages and costs associated with World War Two. The mine re-opened in 1946, but never attained its former glory. The company was soon in financial difficulties. It asked for shareholder loans, obtained a 4000 pound loan from the government in 1949, considered a reconstruction. It was to no avail and the mine folded.

The last note found was 1954 when director P.A. Hicks visited the old mine. George Spencer Compton was mine manager previously and accompanied Hicks on the visit. Compton at this stage was geology lecturer at the School of Mines Kalgoorlie. He stated in 1940 the mine employed 40 men. He notes columbite and beryl was found at the mine along with gold. Norseman Gold Mines was exploring for uranium at the deposit stating there was already indications of it. It is doubtful however carnotite or any other economic uranium presence would have been found.

The site is unusual for gold mines on the Yilgarn Craton, for gold was formed through a fumarole. Gold is not associated with quartz veining or related to shearing, faulting or other structural controls, but rather is stratabound. It is associated with subaquaeous felsic volcanics, and epiclastic rocks, and intense area of gold development along the Footwall, and related to the zonation of sulphide minerals.

The pyrite-arsenopryite boundary represents the sea water interface. The pyrite zone shows alteration haloes formed by the fluxing of hydrothermal solutions in the sub-surface feeder. Gold in the arsenopyrite zone is where greywacke was deposited on the sea floor near the discharging point.

The deposit is developed in a tight, south plunging regional synform. The greenstone is dominated by a major sodic felsic volcanic centre, its associated sedimentary shed, and several intercalated units of ultramafic rock and shales.

Gold is found in the sediments within a thick felsic volcanic sequence. Fine grained gold is confined to altered arsenopyrite rich bands, with biotite rich greywacke. The bands are 2-6 cms thick, and where densely grouped forms ore shoots, in a series of stacked plunging lenses, which pinch out rapidly at depth and along strike. The ore bands are surrounded by alteration haloes of lower grade gold, up to 50 metres thick, underlain by a sharp contact zone with non gold bearing pyrite, within altered greywackes and felsic volcanics.


Commodity List

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


Mineral List


6 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

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: 724170
undivided sedimentary and volcanic rocks 74481

Age: Archean (2500 - 4000 Ma)

Description: Undivided sedimentary (non-volcanic) and felsic volcanic rocks

Comments: sedimentary; igneous volcanic; synthesis of multiple published descriptions

Lithology: Sedimentary; igneous 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]

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]

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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mock, C., Elliott, B.G. Ewers, G.R., Lorenz, R.P.(1987), Gold deposits of Western Australia, BMR, Datafile (MINDEP), Resource Deposit 3, Department of Primary Industries and Energy, Bureau of Mineral Resources Geology and Geophysics, Commonwealth Government of Australia, 1987
Kalgoorlie Miner newspaper (1938), Spargo's Reward, 08/09/1938
News newspaper (Adelaide) (1949), Spargo's Reward, 05/05/1949
Kalgoorlie Miner newspaper (1948), Spargo's Reward, 18/12/1948
The Advertiser newspaper (Adelaide) (1946), Spargo's Reward to Reopen, 21/10/1946
Sunday Times newspaper (Perth) (1954), Spargo's Reward Gold Mine, 18/04/1954

 
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