20042 Alabandite, Uchucchacua Mine, Oyon Province, Lima, Peru October 27, 2019 Steve Peru South America Sharp octahedral grey crystals of alabandite in a matrix of fluorite and calcite, both of which fluoresce (blue and pink respectively). Click for full sized image…
Australasia Australia New South Wales ncat NOVM Calcite, Railway Quarry, Ardglen, New South Wales November 28, 2021
Australasia Australia Victoria ncat VHD11, Chabazite, Natrolite, Thomsonite, Calcite, Boral Quarry, Bundoora, Victoria November 17, 2019
New Mexico North and Central Americas United States 2909 Fluorite, Barite, Nakaye mine (Alamo mine), Derry District, Sierra County, New Mexico, USA April 18, 2023