gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1983.047.344.17 Munirite, Naturally Occurring Sodium Vanadium Oxide Hydrate, a New Mineral Butt K. A. Atomic Energy Minerals Centre, PO Box 734, Peshawar University, Peshawar, Pakistan Mahmood K. Atomic Energy Minerals Centre, Ferozepur Road, Lahore, Pakistan 9 1983 47 344 391 392 13 8 1982 20 12 1982 Copyright © 1983, The Mineralogical Society 1983 Abstract

Munirite was found in the sandstones of Siwaliks formation of mid-Miocene to Pleistocene age. It occurs as small globular clusters of acicular crystals (2 to 3 mm long). Analysis gave V2O5 67.46, N2O 22.91, and H2O 10.26%. The X-ray powder diffraction pattern shows remarkable similarity to a synthetic compound NaVO3 · 1.9H2O (Lukacs and Strausievici, 1962).