A bstract Vanadium, as a glass colorant, acts much like chromium. Ordinarily it leads to green tints which are due to the superposition of the green of trivalent vanadium and the yellow of pentavalent vanadium. Large excess of alkali leads to the formation of colorless vanadates. Under special conditions, solarization may be used to develop the lavender color of bivalent vanadium. The effect of melting conditions and changes in the base glass composition on the colors is discussed.
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Weyl et al. (1939) studied this question.
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