Calcium Plagioclase
![](https://geology.ecu.edu/geol1501/wp-content/pv-uploads/sites/351/2020/07/calcium-plagioclase.gif)
Type | Mineral |
Luster | Nonmetallic |
Hardness | 6 > Glass |
Cleavage | Yes Prismatic at right angles |
Streak | None |
Color | Dark Gray, Blue, or Black |
Miscellaneous | Striations on Cleavage Faces; Blocky; Iridescent |
Type | Mineral |
Luster | Nonmetallic |
Hardness | 6 > Glass |
Cleavage | Yes Prismatic at right angles |
Streak | None |
Color | Dark Gray, Blue, or Black |
Miscellaneous | Striations on Cleavage Faces; Blocky; Iridescent |