themineralogist: Greenland tugtupite-chkalovite top - under white light bottom left - ultraviolet bottom right - phosphorescence after ultraviolet exposure by someHerrings
themineralogist: Greenland tugtupite-chkalovite top - under white light bottom left - ultraviolet bottom right - phosphorescence after ultraviolet exposure by someHerrings
themineralogist: Greenland tugtupite-chkalovite top - under white light bottom left - ultraviolet bottom right - phosphorescence after ultraviolet exposure by someHerrings
themineralogist: Greenland tugtupite-chkalovite top - under white light bottom left - ultraviolet bottom right - phosphorescence after ultraviolet exposure by someHerrings