Gypsum
Hutchison street, Coober Pedy, South Australia state, Australia
Length of crystals: approximately 5 mm. Filiform gypsum. The columnar groups of filiform white crystals are gypsum. The yellowish-brown fragments are weathered shale.
Recovered from weathered shale in a dry climate. Formed in less than a year.
Other localities
- Chichibu Mine (Hydrothermal Skarn, Radial)
- Hitachi Mine (Besshi, Tabular)
- Okorogawa Mine (Hydrothermal, Prismatic)
- Su river (Smectitization, Prismatic)
- Uenohara (Mudstone, Radial)
- Kodo (Mudstone, Granular)
- Desert Cave Hotel (Shale, Hairy)