Search Mineralpedia – A Mineral Photo Database and Identification Guide
A relatively common mineral, Vanadinite is named for its vanadium content. It is found in many localities worldwide as a secondary mineral in oxidized lead-bearing deposits as the vanadium is leached from the wall-rock. Vanadinite was discovered even prior to the discovery in vanadium in Mexico at its type locality of Zimapán, Mexico. Interestingly, the type material for vanadinite was lost at sea.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/vanadinite.pdf
Named for the vanadium in the composition and for its relationship to carpholite. It is a rare mineral that occurs only in Italy at the Molinello mine, the type locality, and the Valgraveglia mine, both in Liguria. It occurs at the type locality in thin veins and open fissures in a silicified wood sample from manganese-ore bearing cherts. It appears as honey yellow to brown to pale straw yellow aggregates of acicular crystals that are associated with volborthite and quartz.
Ref. Basso, R., et al. and the European Journal of Mineralogy May, June 2005 v. 17 no. 3 p. 501-507
Named to honor Dr. Rene Van Tassel, who did extensive mineralogical research on Belgian minerals and was a mineralogist at the Royal Institute of Natural Sciences in Brussles, Belgium. Vantasselite is found on dumps from a quartzite quarry within quartz veinlets and along schistosity planes. Type locality is Bihain, Belgium, but also found in Germany and Japan.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/vantasselite.pdf
An allusion to its components, Vanuralite is named for vanadium (van), uranium (ur), and aluminum (al). Vanuralite is found in only one country in the world at the Mounana mine, its type locality, and the Oklo mine in Gabon. It occurs at both of these mines in the oxidized zones of a uranium-vanadium deposit that is also lead-bearing. Vanuralite is radioactive.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/vanuralite.pdf
Variscite is named for the old word for Vogtland, Variscia, which is the district in Germany from which Variscite gets its type locality. Generally, Variscite results from phosphate-rich waters interacting with aluminum-rich rocks. It can also be found on islands and in caves as a result of the phosphate provided by guano. Variscite is widely dispersed around the world at several localities. Sometimes used as a gem for jewelery.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/variscite.pdf