Latitude & Longitude (WGS84):	26° 40' 32'' South , 118° 25' 34'' East
Latitude & Longitude (decimal):	-26.67567,118.42619
GeoHash:	G#: qek0nzg6f
Locality type:	Mine
Köppen climate type:	BWh : Hot deserts climate

The location is in a break in a low ridge some 500 metres west of the Gibraltar open pit. GML 834N.

The lease was pegged after F. Cooke, McMahon and Richards found an alluvial patch in October 1908. Each of the party made 1500 pounds in money in a short time. They were obtaining 4 to 5 ounces of alluvial gold per week from the area, when they dug down and found a rich leader at a depth of 10 feet. They applied for four leases, named by them as Blackjack in 1908. In January 1909, they crushed 9 tonnes from the leader, for the impressive 580 ounces of gold.

The gold mine was probably taken over by a succession of prospectors, but little information was found of further gold discoveries. The exception was a party of miners in 1918 who obtained 435 ounces from the lease of dollied gold and specimen stone. The report states most of the money was spent at the local hotel.

Commodity List

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

Mineral List

3 valid minerals.

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: 770650

pelitic and psammitic sedimentary rocks 74240 Age: Archean (2500 - 4000 Ma) Description: Conglomerate, chert, small amounts felsic volcaniclastic rocks, sandstone, quartzite, siltstone, phyllite, schist, pelite, shale. Includes the former Hatfield 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: 3188304

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

References