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Uranospathite

In reference to its common bladed habit, Uranospathite is named for the Greek spathe, meaning “broad blade” and, of course, for its uranium content. This rare and highly radioactive mineral occurs as a secondary mineral in the oxidized zone of hydrothermal U-bearing deposits. It is commonly associated with bassetite and takes its type locality from Wheal Basset of the Basset mines in Cornwall, England. Found in only a few locations worldwide, other localities include France, Spain, Germany, and Australia. Uranospathite will fluoresce a yellow-green under ultraviolet light. Additionally, Uranospathite desiccate to sabugalite readily under non-humid conditions.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/uranospathite.pdf

Uranpyrochlore

A member of the Pyrochlore Subgroup, uranpyrochlore is named in reflection of this and its noteworthy uranium content. It can be found in carbonatite-associated, calcium-rich tuffs such as near Kasenda in Uganda, among other localities including Germany, Madagascar, and the United States. Interestingly, mindat.org does not mention the Uganda locality. Uranpyrochlore is radioactive.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/uranpyrochlore

Ushkovite

Sergei L’vovich Ushkov, a Russian naturalist who researched the Il’men National Forest in Russia, is the namesake of Ushkovite. Somewhat uncommon, UShkovite is found in only a few localities worldwide, including Russia, the USA, Namabia, and Brazil, and occurs as an alteration of weathered triplite in granite pegmatites.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/ushkovite.pdf

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