| 11. | It is a light grey opaque mineral with calculated Mohs hardness of 5.
|
| 12. | It has a specific gravity of 6.45 and a Mohs hardness of 5.5.
|
| 13. | It has a Mohs hardness of 3 and a specific gravity of 3.12.
|
| 14. | It has a Mohs hardness of 2.5 and a specific gravity of 2.
|
| 15. | Laurite has a Mohs hardness of 7.5 and a specific gravity of 6.43.
|
| 16. | Its Mohs hardness is 3.5 to 4 and the specific gravity is 5.04.
|
| 17. | It has a Mohs hardness of 4 and a specific gravity of 2.36.
|
| 18. | The Mohs hardness is 1.5 to 2 and the specific gravity is 6.4.
|
| 19. | Its specific gravity is 2 to 2.1 and its Mohs hardness is 2.
|
| 20. | It has a Mohs hardness of 5.5 and a specific gravity of 7.1.
|
