出典:Wiktionary
出典:『Wiktionary』 (2025/02/07 04:22 UTC 版)
tungstite (usually uncountable, plural tungstites)
出典:Wikipedia
出典:『Wikipedia』 (2011/01/27 16:00 UTC 版)
Tungstite is a hydrous tungsten oxide mineral with formula: WO3·H2O. It is a secondary mineral formed by the weathering of other tungsten containing minerals. It crystallizes in the orthorhombic system in translucent yellow to yellow green masses. It is clay-like with Mohs hardness of 2.5 and a specific gravity of 5.5.