0775 Calcite, 6 Level, CSA Mine, Cobar, New South Wales September 20, 2019 Pendleton Australasia Australia New South Wales Small cluster of calcite crystals, no matrix. Width of view 3.5mm. Stack of 30 images. Click on the image below for a higher resolution version.
California North and Central Americas United States 4056 Magadiite, Trinity Centre, Trinity Co., California, USA October 4, 2019
Australasia Australia South Australia 7398 JL3692 Calcite, Iron Monarch open cut, Iron Knob, Middleback Range, Eyre Peninsula, South Australia December 29, 2020
England Northumberland United Kingdom 7374 JL2011 Harmotome, Barite, Settlingstones Mine, Newbrough, Northumberland, England, UK December 28, 2020
England Somerset United Kingdom 1360 Strontianite, Calcite, Dulcote Quarry, Wells, Mendip Hills, Somerset, England September 22, 2019