Emerald
UNB-2017-0181Rocks » Igneous » Pegmatite
Description
Four samples of grass-green subhedral prisms of Emerald with a vitreous lustre in quartz matrix. *Label says Chinese Emerald.
Green Beryl (Be3Al2Si6O18) is known as Emerald and has a vitreous lustre and a colourless streak. Hardness is 7 1/2 to 8 and cleavage is indistinct in one direction. Beryl commonly occurs as six-sided prisms that have striations along the length of the crystals.
https://miningdataonline.com/property/2994/Julcani-Mine.aspx
Specifications
| Object name | Emerald |
|---|---|
| ID | UNB-2017-0181 |
| Legal status | Permanent collection |
| Category | Rock |
| Classification | Rock group: Igneous Sub-group: Pegmatite |
| Composition | Silicates |
| Origin | Angaraes, Peru |
| Pieces | 4 |
| Partial | No |
| Measurements |
|
Map of Origin
Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.