|Latitude & Longitude (WGS84):||30° 4' 0'' South , 121° 37' 45'' East|
|Latitude & Longitude (decimal):||-30.06667,121.62917|
|Köppen climate type:||BWh : Hot deserts climate|
Sulphidic deposit associated with mafic/ultramafic intrusions.
The Carr Boyd Rocks tenements are located 80 km north-north-east of Kalgoorlie and cover an area of 67 square kilometres. They include the historic Carr Boyd nickel mine, which was operated by WMC until 1977 and subsequently re-opened by Defiance Mining NL. WMC mined the `breccia pipes' within the intrusive complex in the 1970s. The location is known to host unusual secondary nickel species.
Specimens may have Goongarrie included on the label. This is a historic gold locality about 50 kilometres west of the mine. It may also refer to the Goongarrie National Park, the mine near its eastern border. There was a concern it could be confused with Lake Goongarrie, another locality on Mindat in the area. The listing has been changed to under Menangina Station, the sheep property the mine is located on.
Takovite is abundant on the dumps at Glory Hole at the Carr Boyd Mine. It occurs as a weathering crust and joint fillings in gabbroic rock. The Takovite is deposited on aluminous minerals, especially plagioclase, and to a lesser extent prehnite and chlorite, leaving minerals such as actinolite uncoated. Associated minerals are glaukosphaerite, paratacamite, gypsum, brochantite, malachite, azurite, epsomite, nickeloan magnesite, and chalconatronite.
The glaukosphaerite was also described as abundant in the Glory Hole mine and its dumps, associated with gypsum, on actinolite rock. The glaukosphaerite was found mixed with multi-hued green specimens of paratacamite, gypsum, and nickel-bearing varieties of magnesite, malachite and clay. Studies of the specimens showed glaukosphaerite fibres with cores of malachite.
Nickelblodite was collected in 1975 from the bottom of the abandoned open pit. Before more could be collected the pit collapsed into a stope. Only a few specimens were collected, one in the Government Chemical Laboratories (specimen number MDC 5657), a few fragments were sent to the British Museum and Smithsonian Institute. One specimen is known from the Durkin Shaft in Western Australia, and the species is found at only one other location worldwide.
Nickelblödite is the analogue of blödite. It is found at the location coating and intergrown with morenosite, translucent, pale yellowish-green to pale green. It crystallises from saline solutions of hydrated sulphide of sodium and nickel, high in sodium bicarbonate at Carr Boyd, which is consistent with the species high Mg(Ni and Fe) ratio.
Georgeite was found on the dumps at Glory Hole by P. Bridge in 1975. It was part of a large boulder of weathered tremolite. The following description is an indication of the mineral riches found at Carr Boyd in the 1970's. The boulder contained disseminated chalcopyrite, pyrite, marcasite, covelline, digenite, and trace mackinawite, bornite, and something called "blaubleibender covelline". In addition, fracture surfaces were coated with nickelian magnesite, gypsum, malachite, chalconatronite, and georgeite.
Georgeite occurs as thin coatings in the oxidized zone with malachite and chalconatronite. It is light blue and formed by a reaction between malachite and groundwater rich in Na+ and Co 2/3-. It was described as coarsely crystalline but also amorphous, as soft and brittle coatings.
Bright yellow hydrohonessite was found on coarse gabbroic rock, with the species as a fine dusting in a fracture on gypsum, reevesite, pecoraite, and goethite.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
42 valid minerals. 4 (TL) - type locality of 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
2500 - 4000 Ma
|mafic intrusive rocks 74263|
Age: Archean (2500 - 4000 Ma)
Description: Mafic intrusive rocks, medium to coarse-grained; layered mafic to ultramafic intrusions - dolerite, gabbro, olivine gabbro, peridotite, pyroxenite, leucogabbro, quartz dolerite, quartz gabbro, gabbronorite
Comments: igneous mafic intrusive; synthesis of multiple published descriptions
Lithology: Igneous mafic intrusive
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.