Apatite vs Biotite
| Property | Apatite | Biotite |
|---|---|---|
| 化学式 | Ca5(PO4)3(F,Cl,OH) | K(Mg,Fe)3(AlSi3O10)(OH)2 |
| 晶系 | Hexagonal | Monoclinic |
| 矿物分类 | 08 Phosphates, Arsenates, and Vanadates | 09 Silicates |
| 莫氏硬度 | 5.0 | 2.5-3.0 |
| 颜色 | Green, blue, yellow, violet, colorless | Black, dark brown, dark green |
| 光泽 | Vitreous | Vitreous |
| 条痕色 | White | White to gray |
| 透明度 | Transparent | Translucent |
| 解理 | Poor {0001} | Perfect basal {001} |
| 断口 | Conchoidal to uneven | Uneven |