Mineralpedia Details for Rabbittite
Named for John Charles Rabbitt who was a Chief of the Trace Elements Section at the United States Geological Survey. Rabbittite can be found in Utah in the United States and at Jachymov in the Czech Republic, as well as purportedly in Russia. It is a secondary mineral likely of post-mine origin. It can be found associated with sodium-zippeite, magnesium-zippeite, fourmarieite, gypsum, bieberite, and cobaltoan calcite. Rabbittite is radioactive. It will slowly dissolve in water at fluoresces a pastel yellow color under short-wave ultraviolet light.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/rabbittite.pdf
Rabbittite from Hideout mine, White Canyon dist., San Juan Co., Utah, United States
Fine yellow, acicular sprays to about 1mm.