|Latitude & Longitude (WGS84):||30° 46' 7'' South , 121° 29' 40'' East|
|Latitude & Longitude (decimal):||-30.76853,121.49449|
|Köppen climate type:||BSh : Hot semi-arid (steppe) climate|
The Union Jack Gold Mine was a small lease in the northern section of the Golden Mile. The Genevieve lease bordered it to the south, Boulder Extended to the west, True Blue to the east, and Ironsides lease to the north. GML 433E.
Its noted in 1910, the Union Jack Gold Mining No Liability Kalgoorlie syndicate was formed to take over the Union Jack and Union Jack South leases. It states the lode had never been developed to that point, although the Union Jack lease appears on an 1896 map of the Golden Mile.
Another source states prospectors Coaffer and McArthur were working the lease in 1894, possibly the original prospectors considering the goldfield only started the year before. The Octagon Explorers Syndicate is noted as owing the lease in 1896.
For a brief time in 1897, the lease was known as the Kalgoorlie United. It states the lode is 3 feet wide, and of high grade, being a jasper reef on the western side of the lease, changing to graphitic slate at depth, covered in pyrite, and presumably some gold. The same year there was an alluvial rush onto the lease. A one ounce nugget had been found on the surface.
Willman and Grissold (surnames) offer lease owner dour Scotsman, Black (surnames), 1000 pounds cash for the lease in 1909. He declines and places the lease on the market for a higher price. By 1911, there are three tributing parties on the lease.
John Smith applied for the lease in 1914, and then Edward Rule in 1921.
A Kalgoorlie syndicate is formed in 1924 to take over the lease. Tributers across 1921 to 1923 obtained 7749 tonnes of ore yielding 3369 ounces of gold averaging 8.66 dwt.
Neighbouring North Kalgurli (1912) Limited take over the lease, and together with the Genevieve lease, recondition the old shafts, carting ore to their main plant across 1930 to 1934.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
2 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
0 - 2.588 Ma
Age: Pleistocene (0 - 2.588 Ma)
Comments: regolith; synthesis of multiple published descriptions
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). 
|Neoarchean - Mesoarchean|
2500 - 3200 Ma
|Archean volcanic rocks|
Age: Archean (2500 - 3200 Ma)
Comments: Yilgarn Craton
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.