Uvite
UNB-2017-0256Minerals » Silicates » Cyclosilicates » Tourmaline
Description
Sample of deep brown/black euhedral prismatic Uvite embedded on small, colourless, thin prismatic Quartz crystals. Lustre is vitreous. Uvite crystal size: 1.0 cm x 0.7 cm x 0.7 cm.
Uvite (CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH)) can be brown, green or black in colour. Lustre is vitreous and hardness is 7 1/2. Streak is white, light-brown or light green. Uvite usually occurs as short prismatic crystals that have complete terminations but can occur as masses, radiating or columnar aggregates.
https://www.mindat.org/min-54355.html
Specifications
| Object name | Uvite |
|---|---|
| ID | UNB-2017-0256 |
| Legal status | Permanent collection |
| Category | Mineral |
| Classification | Mineral group: Silicates Sub-groups: Cyclosilicates » Tourmaline |
| Composition |
|
| Origin | Sharbot Lake, Ontario, Canada |
| Pieces | 1 |
| Partial | No |
| Measurements |
|