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Vicanite-(Ce)

Named for the type locality at the Vican (Vico Lake) volcanic complex in Italy, where it is found in volcanic ejecta in a pyroclastic formation. Vicanite appears as yellow-green, prismatic, dipyramidal crystals.

Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)

Vishnevite

Vishnevite is named for one of its co-type localities in the Vishnevy Mountains in Russia. The other type locality is in the Ilmen Mountains, also in Russia. Occurs “in poikilitic aegerine-nepheline-sodalite syenites and associated pegmatites” in few places including, additionally, Scotland, Sweden, Greenland, Tanzania, and in Colorado, USA.

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

Vivianite

Named for John Henry Vivian, the Welsh-Cornish mineralogist from Cornwall, England who discovered the mineral. Vivianite is a relatively common secondary mineral which occurs in oxidized metallic ore deposits and in granite pegmatites, as a replacement for organic material in fossilized bones, lake sediments, and in bog-iron ores and peat bogs, and as a rare mineral in caves. Some of the localities for Vivianite include in England, Germany, Serbia, Russia, Ukraine, Cameroon, the United States, Mexico, Brazil, Bolivia, and Japan.

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

Vladimirite

Named for its discovery locality at the Vladimirovskoye deposit in Russia, Vladimirite also shares its type locality with the Khovu-Asky deposit, also in Russia. Found as a secondary mineral in arsenic-bearing deposits’ oxidized zones. Occurs in only a few localities worldwide including, additionally, Germany, Morocco, and in Michigan, USA.

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

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