Stilbite
| Colour | White, Orange, Pink, Clear |
|---|---|
| Mohs hardness | to 4 |
| Lustre | Vitreous, pearly on {010} |
| Streak | White |
| Crystal system | Monoclinic, also triclinic and orthorhombic |
| Transparency | Transparent to translucent |
| Cleavage | Perfect on {010} |
| Fracture | Conchoidal or uneven |
| Chemical formula | Stilbite-Ca: NaCa 4 (Si 27 Al 9 )O 72 ·28(H 2 O) Stilbite-Na: Na 9 (Si 27 Al 9 )O 72 ·28(H 2 O) |
| Specific gravity | 2.12 to 2.22 |
What is Stilbite?
Stilbite is the name of a series of tectosilicate minerals of the zeolite group. Prior to 1997, stilbite was recognized as a mineral species, but a reclassification in 1997 by the International Mineralogical Association changed it to a series name, with the mineral species being named:Stilbite-Ca Stilbite-Na, sometimes also called stiblite
How to identify Stilbite
- Lustre: Vitreous, pearly on {010}.
- Hardness: Mohs to 4 — soft; a knife will scratch it.
- Streak: White.
- Habit: Monoclinic, also triclinic and orthorhombic crystal system.
Stilbite in different forms
Stones often confused with Stilbite
Frequently asked questions
How hard is Stilbite?
Stilbite is Mohs to 4 on the hardness scale.
What colour is Stilbite?
Stilbite is typically white, orange, pink, clear (Usually colorless, white or pink).