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The thiospinel group is a group of sulfide minerals with a general formula AB2X4 where A is nominally a +2 metal, B is a +3 metal and X is -2 sulfide or similar anion (selenide or telluride). ''Thio'' refers to sulfur and ''spinel'' indicates their isometric spinel like structure.〔(Thiospinel group on Mindat )〕 As the chalcogens S, Se and Te are less electronegative than oxygen, the bonding in these materials is generally more covalent than in the oxospinels. Some are (magnetic) semiconductors but others display, at times complicated, metallic behavior, often coupled with equally complicated magnetic properties. The assignment of oxidation states is also not always as straightforward as in the more ionic oxocompounds, as is shown in the case of carrollite. Group members include: * Cadmoindite - CdIn2S4 * Carrollite - CuCo2S4 * Fletcherite - Cu(Ni,Co)2S4 * Greigite - Fe2+Fe3+2S4 * Indite - FeIn2S4 * Kalininite - ZnCr2S4 * Linnaeite - Co2+Co23+S4 * Polydymite - Ni2+Ni23+S4 * Siegenite - (Ni,Co)3S4 * Tyrrellite - Cu(Co,Ni)2Se4 * Violarite - Fe2+Ni23+S4 ==References== 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「Thiospinel group」の詳細全文を読む スポンサード リンク
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