Colourless calcite crystals that fluoresce pale pink under shortwave UV, with dark brown descloizite crystals.
An interesting specimen. There appears to be multiple generations of calcite. The “Mercedes” faces are obviously a later addition, and there is zoning apparent in the fluorescence.
White light photo: Width of view 6mm, stack of 55 images. SWUV light photo: Width of view 6mm, stack of 18 images.
Click on the images below for a higher resolution version.
