|Latitude & Longitude (WGS84):||28° 52' 32'' South , 120° 39' 6'' East|
|Latitude & Longitude (decimal):||-28.87583,120.65194|
|Köppen climate type:||BWh : Hot deserts climate|
Oldest known kimberlite at the time of writing.
Discovered by Stockdale Prospecting Limited in 1991 as a small weathered silicified macrocrystic kimberlite.
It shows relict olivine and phlogopite macrocrysts, and an altered groundmass of phlogopite and pseudomorphs after monticellite.
It is the third occurrence discovered for yimengite, a rare lithiophile element oxide, occurring at the site as a metosomatic alteration product of chromium spinel macrocrysts. It is rare at the deposit, associated with phlogopite, K-richterite, secondary diopside, Mg chromite, lindsleyite, Mg-Cr ilmenite, and Nb-Cr rutile.
Chomium rich spinel appears common, very rare pyrope-garnet and picro-ilmenite, with only two tiny diamond fragments found during drilling.
The site is just within the Menzies Shire, however access via the faint track to the remote location comes in from the east and the Leonora Shire, and it made sense to retain it under the latter shire to prevent confusion. It is not part of a goldfield or near a station homestead.
12 valid minerals.
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
|Neoarchean - Mesoarchean|
2500 - 3200 Ma
|Archean intrusive rocks|
Age: Archean (2500 - 3200 Ma)
Comments: Yilgarn Craton
Lithology: Intrusive igneous 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. 
2500 - 4000 Ma
|granite gneiss - high-Ca type 74313|
Age: Archean (2500 - 4000 Ma)
Comments: high grade metamorphic rock; synthesis of multiple published descriptions
Lithology: High grade metamorphic rock
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).