Colemanite with Nobleite?

LOCATION:

Corkscrew Mine, Furnace Creek District, near Ryan, Death Valley, Inyo County, California, USA

DESCRIPTION:

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.

SIZE: 107 x 104 x 82 mm overall (Large Cabinet)