Colemanite with Nobleite?

107 x 104 x 82 mm overall

This sculptural Colemanite specimen is from the old Corkscrew Mine located inside Death Valley National Monument. It is comprised of intergrown, glassy, colorless, spheroidal aggregates of Colemanite crystals to 4 mm, some with minor clay inclusions. There are some white blebs of what may be Nobleite. It is complete on all sides, with just 2 small points of attachment, and is in excellent condition. This was found in the 1980s, and collecting here is now forbidden. Fluorescent yellow in both SW and LW Ultraviolet light.