释义 |
bi·o·tite \ˈbīəˌtīt\ noun (-s) Etymology: German biotit, from Jean B. Biot died 1862 French mathematician + German -it -ite : a generally black or dark green form of mica K2(Mg,Fe,Al)6(Si,Al)8O20(OH)4 forming a constituent of crystalline rocks and being a silicate of iron, magnesium, potassium, and aluminum (hardness 2.5-3) • bi·o·tit·ic \|bīə|tid.ik\ adjective |