Arkaroola Bore, Arkaroola Region (Arkaroola Station), North Flinders Ranges, Flinders Ranges, South Australia, Australia
|Latitude & Longitude (WGS84):||30° 17' 17'' South , 139° 21' 15'' East|
|Latitude & Longitude (decimal):||-30.28806,139.35417|
|Köppen climate type:||BSh : Hot semi-arid (steppe) climate|
Located in a gully, this locality consists of outcropping hydrothermally-altered and weathered Wooltana volcanics containing veins and pockets of zeolites, calcite and crystallised ilmenite. Fibrous and splintery actinolite is abundant. Stilbite is present as both cream-white and deep orange clusters of crystals, and the locality has produced the best zeolite specimens in South Australia.
For many years an opaque, white, radiating zeolite infilling stilbite-lined vughs was identified as pectolite (e.g. in Coats and Blissett 1971) or mesolite, however, analysis of the mineral by Dr. Allan Pring in 1987 confirmed the species as scolecite (Australian Mineralogist, Vol.2, No. 2. pg. 34).
15 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
635 - 720 Ma
Age: Cryogenian (635 - 720 Ma)
Stratigraphic Name: Emeroo Subgroup
Comments: sedimentary siliciclastic; synthesis of multiple published descriptions
Lithology: 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).