2814 Calcite, Barite, Heulandite, Red Bluff, Phillip Island, Bass Coast Shire, Victoria April 7, 2024 Steve Australasia Australia Victoria Red-fluorescing calcite crystals with minor heulandite (pictured) and barite. Width of view 6mm. Stack of 50 images. Click on the image below for a higher resolution version.
Europe Russia 5236 Calcite, Quartz, Sphalerite, Nikolaevskiy Mine, Dal’negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia September 29, 2019
Africa Namibia 8028 Boltwoodite, Calcite, Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia October 5, 2019
Asia Indonesia 10081 Grape Agate, Calcite, Mamuju area, Sulawesi Barat Province, Sulawesi, Indonesia October 18, 2019
Arizona North and Central Americas United States 5223 Calcite, Wulfenite, Rowley Mine, Theba, Maricopa Co., Arizona, USA September 29, 2019