|Latitude & Longitude (WGS84):||30° 53' 49'' South , 121° 54' 25'' East|
|Latitude & Longitude (decimal):||-30.89701,121.90687|
|Köppen climate type:||BSh : Hot semi-arid (steppe) climate|
The Majestic gold prospect (and potential future mine) is located just north-east of the intersection between the Trans Australian Railway Line, and the Bulong-Curtin Road.
Majestic contains two economic zones named Discovery and Majestic West, and a further area just to the north called Imperial. There are also numerous gold and copper anomalies nearby.
The site lies at the southern end of the Kurnalpi Terrane, and on the western limb of the Bulong Anticline.
The mineral zones trend north-south, hosted in quartz-dolerite to monzogranite, and bounded by tonalitic dykes. The porphyry dips 60 degrees west. The deposits are cut by a shear zone to the north.
Imperial is an extension of the Majestic deposit, cut by a sinistral strike slip fault, creating two separate bodies.
Gold is associated with silica, albite, sericite, alteration, and/or quartz veining containing fine grained chalcopyrite and pyrite. Gold is found in a north-south trending, westerly dipping, brittle fracturing of the host granodiorite.
Low grade gold mineralisation is also found in north-south trending porphyries, with sometime high grade gold mineralisation at the contact between the porphyries and massive granodiorite. Gold here is associated with dilatational quartz veining and strong silica sericite alteration.
Some high grade gold mineralisation is also found in sheared biotite rich melanocratic tonalites and porphyries with fine blebs of chalcopyrite and pyrite stringers. The primary mineralisation has high grades of copper, bismuth, gold and silver.
Imperial is 500 metres north-west of Majestic. Gold mineralisation is hosted in the same granodiorite, and associated with a similar series of tonalite porphyry dykes.
JORC Indicated Resources are for Majestic 1.9 million tonnes of ore at 2.2 g/t yielding 139 000 ounces of gold, and an Inferred Resource of 563 000 tonnes of ore at 1.5 g/t yielding 27 600 ounces of gold. Imperial has an Indicated Resource of 188 000 tonnes of ore at 10 g/t yielding 60 500 ounces of gold, and an Inferred Resource of 132 000 tonnes of ore at 5.5 g/t yielding 23 200 ounces of gold.
6 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.