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Mineralpedia Details for Rabbittite

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Rabbittite

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

Formula
Ca3Mg3(UO2)2(CO3)6(OH)4ยท18H2
Crystal System
Monoclinic 
Crystal Habit
Efflorescences, Fibrous, Acicular 
Cleavage
Perfect, Perfect, Perfect 
Luster
Silky 
Color
pale green, greenish yellow 
Class
Monoclinic 
Fracture
Brittle 
Hardness
2.5 
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Rabbittite from Hideout mine, White Canyon dist., San Juan Co., Utah, United States

Rabbittite
            from Hideout mine, White Canyon dist., San Juan Co., Utah, United States

Fine yellow, acicular sprays to about 1mm.

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