| Formula | (Mg; Fe 2+)2(Mg; Fe 2+)5Si8O22(OH)2 |
| Origin | Heřmanov (Czech Republic) |
| Description | Anthophyllite with biotite lens, so-called Hermanover sphere |
| Classification (Lapis) | Amphiboles |
| Crystal System | orthorhombic |
| Hardness | 5,5 – 6,0 |
| Colour | Gray, brownish gray, yellowish brown, clove-brown, brownish green, emerald-green; in thin section, colorless to pale green or yellow |
| Streak | white or grayish |
| Luminescence | none observed |
| Luster | vitreous |
| Transparency (Opacity) | transparent to translucent |
| Cleavage | perfect |
| Fracture | |
| Magnetism | negative |
| Geological Setting | From contact metamorphism of Ca-Mg siliceous sediments; in greenschist facies metamorphics derived from ultrama¯c or magnesium carbonate rocks. |
| Specific Gravity | 2,9 g/cm3 |
