| Formula | Ca2(Mg; Fe 2+)5Si8O22(OH)2 |
| Origin | Kuran va Munjan (Afghanistan) |
| Description | whitish crystal of tremolite |
| Classification (Lapis) | Amphiboles |
| Crystal System | monoclinic |
| Hardness | 5,0 – 6,0 |
| Colour | White, gray, lavender to pink; colorless in thin section |
| Streak | white |
| Luminescence | many different coolours observed |
| Luster | vitreous |
| Transparency (Opacity) | semitransparent |
| Cleavage | perfect |
| Fracture | |
| Magnetism | negative |
| Geological Setting | From contact metamorphism of Ca-Mg siliceous sediments; in greenschist facies metamorphics derived from ultramafic or magnesium carbonate rocks. |
| Specific Gravity | 3,12 g/cm3 |
