Epidote
| Colour | Green, Yellow, Black, Brown |
|---|---|
| Mohs hardness | 6–7 |
| Lustre | Vitreous to resinous |
| Streak | Greyish white |
| Crystal system | Monoclinic |
| Transparency | Transparent to nearly opaque |
| Cleavage | {001} perfect and {100} imperfect |
| Fracture | Flat regular to uneven |
| Chemical formula | {Ca 2 }{Al 2 Fe 3+ }(SiO 4 )(Si 2 O 7 )O(OH) |
| Specific gravity | 3.38–3.49 |
What is Epidote?
Epidote is a calcium aluminium iron sorosilicate mineral.
How to identify Epidote
- Lustre: Vitreous to resinous.
- Hardness: Mohs 6–7 — about as hard as a steel knife.
- Streak: Greyish white.
- Habit: Monoclinic crystal system.
Epidote in different forms
Stones often confused with Epidote
Frequently asked questions
How hard is Epidote?
Epidote is Mohs 6–7 on the hardness scale.
What colour is Epidote?
Epidote is typically green, yellow, black, brown (Pistachio green, yellow-green, greenish black, brownish-green, green, black).