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Desert Cave Hotel

Hutchison street, Coober Pedy, South Australia state, Australia


Salt weathering

Gypsum crsytals growing on the surface of the Cretaceous Aptian (120 Ma) Bulldog Shale in the very dry climate. The Bulldog Shale was formed under shallow marine environment. The Marree Subgroup unconformably overlies the Late Jurassic Algebuckina Sandstone and Paleozoic sediments.

Desert Cave Hotel

Wall of the old opal mine which is used as an undergrond hotel. Gypsum component in the grand water precipitates as filiform gypsum during the evaporation process on the surface of the shale in the very dry climate. White filiform crystals are gypsum. The light brown basement is the weathered shale of the Bulldog Shale. Rough vertical trenches are traces of the excavator.

Reported Minerals

Mineral Assemblages

  • Gypsum


Related Occurrences

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