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.
Arizona North and Central Americas United States ncat JP1586, Calcite, Phelps Dodge Corporation Well No. 1, Little Ajo Mts, Ajo District, Pima Co., Arizona, USA September 23, 2019