Originally posted on Nature's Rainbows in 2023 by Chris Clemens. Red trinitite is technically not a true mineral, because it was not formed through a geologic process. Rather, this brick-red colored glass-like material was created at 5:29 A.M. Mountain Time on July...
How Hot Are Your Rocks? Radioactivity in Uranyl-Activated Fluorescent Minerals
Originally posted on Nature's Rainbows in 2016 by Chris Clemens. Introduction: Uranyl-activated green fluorescence is one of the most common fluorescent responses seen under UV light. It occurs in a wide variety of minerals, generally due to one of two conditions: 1.)...
Gaspeite: The Fluorescent Pretender
I’ve known more than one collector who has been enticed by the brilliant blue/green fluorescence of the mineral gaspeite. In fact, under the light of a Convoy S2+ long wave flashlight, this material can produce one of the brightest fluorescent responses of any...


