1792 Calcite, Kyogle, New South Wales November 27, 2021 Steve Australasia Australia New South Wales Ball of bladed crystals with orange fluorescence. Ex Margaret Brown Collection. Width of view 25mm. Stack of 40 images. Click on the image below for a higher resolution version.
Arkansas North and Central Americas United States 5627 Aegirine, Calcite, Jones Mill Quarry (Martin Marietta Quarry; Highway 51 Quarry; Mid-State Quarry), Magnet Cove, Hot Spring Co., Arkansas, USA October 5, 2019
Nevada North and Central Americas United States 0213 Millerite, Calcite, Grays Quarry, Hamilton, Hancock Co., Illinois September 18, 2019
Australasia Australia South Australia ncat OW303 Malachite, Calcite, Dolomite, Quartz, Mutooroo Copper Mine, Mutooroo Homestead, Mingary, Olary Province, South Australia November 12, 2022