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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

Utahite

Named for the state of Utah, USA where the mineral was discovered at its type locality, the Centennial Eureka mine. Utahite can be found only in the United States in the mine dumps as a rare secondary mineral from the oxidized zone of Cu-Zn-Te bearing hydrothermal deposits. Utahite has also been found at the Empire mine in Arizona, USA.

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

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