ncat RAM4 Calcite, Siderite, Biggenden Mine, Mount Biggenden, North Burnett Region, Queensland December 29, 2023 Steve Australasia Australia Queensland Multiple generations of calcite with siderite, and some of the calcite fluoresces strongly red. One habit is white “Christmas trees”. Width of view 5.5mm. Stack of 28 images. Click on the image below for a higher resolution version.
Iowa North and Central Americas United States ncat JP2475, Calcite, Pyrite, Oskaloosa, Mahaska Co., Iowa, USA September 23, 2019
Australasia Australia Victoria 9007 JP2350 Aragonite, Calcite, Phillipsite-K, Chabazite-Ca, Trentham Falls, Trentham, Hepburn Shire, Victoria May 20, 2020