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roscoelite Roscoelite is a green mineral from the mica group that contains vanadium. The chemical formula is K(V3+, Al, Mg)2AlSi3O10(OH)2.〔(Roscoelite information )〕 Crystals of roscoelite take on the monoclinic form, and are from the 2/m point group. The appearance is semi transparent to translucent coloured olive brown to green brown. The lustre is pearly. The mineral shows pleochroism with X showing green-brown, and Y and Z axes showing olive-green colour. The mineral was named after Henry Enfield Roscoe who first produced vanadium metal. ==Chemical properties== Roscoelite is a muscovite with aluminium substituted with vanadium. Vanadium can also be substituted by magnesium, iron, or manganese.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「roscoelite」の詳細全文を読む
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