Stilbite
UNB-2017-0218Minerals » Tectosilicates » Zeolite
Description
Sample of two large yellowish "wheat sheaves" of Stilbite. Pearly lustre is visible on the cleavage planes. Largest crystal size: 5.5 cm x 2.5 cm 2.0 cm
Stilbite (NaCa2Al5Si13O36 x 16H2O) can be white, greyish, yellowish, red to brown in colour with a vitreous lustre that is pearly on the cleavage. Streak is colourless and hardness is 3 1/2 to 4. Cleavage is perfect in one direction. Stilbite usually occurs as bladed aggregates that resemble "wheat sheaves" but can also be radial, globular or tabular (rare).
Specifications
| Object name | Stilbite |
|---|---|
| ID | UNB-2017-0218 |
| Legal status | Permanent collection |
| Category | Mineral |
| Classification | Mineral group: Tectosilicates Sub-group: Zeolite |
| Composition |
|
| Origin | Harbourville, Nova Scotia, Canada |
| Pieces | 1 |
| Partial | No |
| Measurements |
|
Map of Origin
Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.