Wulfenite, powellite, lindgrenite, etc. are minerals composed of the complex anion (MoO 4 ) 2- and cations. Wulfenite (also called molybdenum lead ore) PbMoO 4 is a tetragonal yellow to reddish brown square plate crystal with clear cleavage on {011}. It is almost transparent and has a resinous or diamond-like luster. Mohs hardness is 2.5-3, specific gravity is 6.5-7. Tungsten replaces about half of the molybdenum and forms a partial solid solution with wolframite PbWO 4 , which has the same crystal structure. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
錯陰イオンの(MoO4)2-と陽イオンによって構成されている鉱物で,ウルフェナイト,パウエル鉱,リンドグレン鉱などがある。ウルフェナイトwulfenite(モリブデン鉛鉱ともいう)PbMoO4は,正方晶系の黄色ないし赤褐色四角板状結晶で,{011}に明瞭なへき開がある。ほぼ透明で樹脂状ないしダイヤモンド光沢がある。モース硬度2.5~3,比重6.5~7。タングステンがモリブデンを約1/2まで置きかえ,同じ結晶構造の鉛重石PbWO4と部分的に固溶体をつくる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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