| Name |
|
Celestine
(Celestite) |
| Chemistry |
|
Sr[SO4] |
| Hardness |
|
3 - 3.5 |
| Lustre |
|
vitreous |
| Colour |
|
colourless, white, yellowish, also blue |
| Streak |
|
white |
| Density [g/cm3] |
|
3.9 - 4.0 |
| Crystal habit |
|
orthorhombic, crystals
tabular, and prismatic |
| Cleavage, Fracture |
|
[001] perfect, [210] distinct, fracture conchoidal |
| other characteristics
and occurrences |
|
grained, spathic, botryoidal,
prismatic, fibrous |
 |
|
|