ncat OW310 Goethite after Hematite, Darke Peak, South Australia September 8, 2023 Pendleton Australasia Australia South Australia Trigonal hematite crystals that have been completely replaced by goethite, with minor colourless hyalite opal. Ex Barry Schubert Collection. Width of view 8.63mm. Stack of 45 images. Click on the image below for a higher resolution version.
Iowa North and Central Americas United States ncat JP732, Pyrite, Calcite, Pint’s Quarry, Raymond, Black Hawk Co., Iowa, USA September 23, 2019
Australasia Australia Queensland ncat RAM4 Calcite, Siderite, Biggenden Mine, Mount Biggenden, North Burnett Region, Queensland December 29, 2023
England Somerset United Kingdom 5446 Rhodochrosite, Mn-Calcite, Durnford Quarry, Long Ashton, Somerset, England October 2, 2019