单词 | 小晶体 |
释义 | 〔sphene〕A titanium accessory mineral in some granite and metamorphic rocks, CaTiSiO5, occurring in usually small brown or yellow crystals and sometimes used as a gemstone. Also called titanite 榍石:某种花岗岩及变质岩中的钛附属矿物质,化学式为CaTiSiO5,通常以棕色或黄色的小晶体存在,有时用作宝石 也作 titanite |
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