Properties
| Category | Tectosilicate minerals |
|---|---|
| Formula | Stilbite-Ca: NaCa4(Si27Al9)O72·28(H2O); Stilbite-Na: Na9(Si27Al9)O72·28(H2O) |
| Crystal system | Monoclinic, ; also triclinic and orthorhombic |
| Color | Usually colorless, white or pink |
| Crystal habit | Thin tabular, aggregates sheaf-like or in bow-ties, also fibrous and globular. |
| Cleavage | Perfect on {010} |
| Fracture | Conchoidal or uneven |
| Tenacity | Brittle |
| Mohs scale hardness | 3+1⁄2 to 4 |
| Luster | Vitreous, pearly on {010} |
| Streak | White |
| Diaphaneity | Transparent to translucent |
| Specific gravity | 2.12 to 2.22 |
From the Wikipedia article
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
Source
Source record: crystal-compendium/stilbite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Stilbite — revision id 1331289019. Text and properties from Wikipedia, licensed CC BY-SA 4.0.