| Mineral class | Silicates : Inosilicates : Diopside-augite group. |
| Chemical formula | (Na,Ca)Fe(Si2O6) (aegirine) Jeffersonite is a Mn-Zn rich variety of aegirine. |
| Crystal system | Monoclinic |
| Habitus | As small crystals or grains. |
| Cleavage | Good, uneven fracture. |
| Hardness | 6 |
| Density | |
| Color | Dark green. |
| Streak | |
| Luster | |
| Description | |
| Occurance | |
| Associates | |
| Notes | Jeffersonite can also be seen as a Mn-Zn rich augite. Since it's an variety of another mineral(s), some of the data have been taken from aegirine. If anyone have information I would be grateful for a mail. |
| Locations | A relatively rare mineral in Sweden |
| To silicate index. |
Mineral group index. |
Main index. |
If you have some questions, suggestions or comments you are welcome to write me a line or two.