Salt: Nantiburry Springs
Brecciated Balcanoona Formation: Arkaroola
Limestones and Dolomites of the Balcanoona formation were fractured by fault activity and infilled with silica rich waters, cementing into this silicified breccia on the Paralana Hot Springs road.
Ripple rocks: Arkaroola
Ripple rocks seen throughout the Flinders Ranges are likely to have been formed in sandy shallow waters, rapidly covered in kilometres of sediments which resulted in rock formation through processes of heat and pressure. This example is part of the Blue Mine Conglomerate Formation, around 800 million years old.
Blue Mine Conglomerate Formation: Arkaroola
An outcrop of Blue Mine Conglomerate Formation can be seen at Kingsmill Creek near the Arkaroola Homestead. This conglomerate was formed around 800 million years ago and contains fragments of blue quartz from the 1.59 billion year old Mount Neil Granite Formation seen closer to Paralana Hot Springs. The Blue Mine Conglomerate was likely formed from shoreline or fluvial deposition and is seen at this site as a weathered pavement surrounding a waterhole.
Opaminda Formation: Arkaroola
This Opaminda Formation near the Arkaroola Village was deposited in shallow waters around 800 million years ago. This lightly metamorphosed outcrop exposes ripple marked sandstone, laminated and a green talcose siltstone (pictured).
Flourescent mineral display: Arkaroola
Among the extensive minerals on display in the Arkaroola collection are fluorescent minerals, including various local minerals such as Flourite, Autunite, Willemite, Calcite and Gypsum.
Tiny stalactites
These brittle 5-10mm calcium carbonate deposits in Warraweena Conservation Park are found in an overhang in a quartzite gorge.
Silcrete Outcrop with Sand Calcite formations: Copley
Outcropped Silcrete and Sand Calcite are a recurring combination, as seen here in Copley and along the Strzelecki Track.
Goethite formation: Leigh Creek
Unusual goethite formations found in the Leigh Creek area.
Talc and Tremolite
Talc deposit in the Strzelecki Track area.
