Vanadinite

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vanadinite [və′nād·ən‚īt]

(mineralogy)

Pb₅(VO₄)₃Cl A red, yellow, or brown opatite mineral often occurring as globular masses encrusting other minerals in lead mines; an ore of vanadium and lead hardness is 2.75-3 on Mohs scale, and specific gravity is 6.66-7.10.

Vanadinite

a mineral of the class of vanadates. Its composition is Pb₅(VO₄)₃Cl (78.3 percent PbO, 19.3 percent V₂O₅, and 2.4 percent CI). Vanadinite, which crystallizes in a hexagonal system, is found in the form of small prismatic crystals, kidney-shaped clusters, and earthy masses. It can be yellow, brown, or red. Its hardness on the mineralogical scale ranges from 2.75 to 3; its density is 6,500-7,100 kg/m³. Vanadinite is formed in the zone of oxidation of lead-zinc and copper polymetallic sulfide deposits. It is used as a source of vanadium.

L. F. BORISENKO

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No references found			Van Vleck, Edward Burr Van Vleck, John H. Van Vleck, John Hasbrouck Van Waters, Miriam Van Wert Van Wert County Van Winkle, Rip Van Wyck Brooks Van Zandt County Van Zeeland, Paul van't Hoff equation van't Hoff factor van't Hoff formula van't Hoff isochore van't Hoff isotherm van't Hoff's law van't Hoff, Jacobus Hendricus Van, Lake vanadate Vanadates Vanadates, Natural vanadic acid vanadic acid anhydride vanadic sulfate vanadic sulfide Vanadinite Vanadium vanadium carbide vanadium dichloride Vanadium Ores vanadium oxide vanadium oxytrichloride vanadium pentasulfide vanadium pentoxide vanadium sesquioxide vanadium steel vanadium sulfate vanadium sulfide vanadium tetrachloride vanadium tetraoxide vanadium trichloride vanadium trioxide vanadous chloride vanadyl chloride vanadyl sulfate Vanadzor Vanags, Juli Petrovic Vanbrugh Vanbrugh, Sir John Vance County Vance Devoe Brand			van't Hoff isotherm Van't Hoff's law Van't Hoff's law Van't Hoff's law van't Hoff's rule van't Hoff's rule van't Hoff's rule van't Hoff's rule Van't Hoff, Jacobus Hendricus Van, Lake Van-courier Van-der-Pol oscillator Van-Lang Vietnamese School Vana Vana Vana est illa potentia quae numquam venit in actum Vana Kooli Mehed Vana'diel Standard Time VANAC vanadate vanadate Vanadates Vanadates Vanadates, Natural Vanadic vanadic acid vanadic acid vanadic acid anhydride vanadic sulfate vanadic sulfide Vanadinite Vanadious Vanadís Vanadís Vanadite vanadium vanadium vanadium vanadium vanadium Vanadium bronze Vanadium carbide Vanadium compounds Vanadium compounds Vanadium compounds Vanadium Corporation of America Vanadium dichloride Vanadium Energy Storage System Vanadium Ores Vanadium oxide Vanadium oxide trichloride Vanadium oxychloride Vanadium oxytrichloride vanadium pentasulfide vanadium pentoxide vanadium pentoxide Vanadium Phosphorus Oxide vanadium poisoning vanadium poisoning vanadium poisoning Vanadium redox battery

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Vanadinite