Phosphorescent Fluorite - El Potosi #6 Recommendations disabled This unusual Phosphosiderite with Triplite

This unusual Phosphosiderite with Triplite specimen is from Portugal

Although we have labelled it as Black Tourmaline

Aiding learning and studying

Angel Wing Calcite is the name given to a variety of Calcite that forms in thin blades

outdated ideas and constraints

Phosphorescent Fluorite - El Potosi #6 Recommendations disabled This unusual Phosphosiderite with TripliteThis very new find Fluorite from December 2025 comes from the El Potosi Mine in Mexico. It has an unusual shape for Fluorite, and the current theory is that these may in fact be pseudomorphs after Calcite. They display not only fluorescence in longwave 365nm light, but also phosphorescence, which depending on the piece, can last several seconds after the UV light is turned off (this is best viewed in complete darkness). You will receive the exact