Celestine
Real mineral · uncommon · SrSO₄
Strontium sulfate forming in sedimentary evaporite deposits and hydrothermal veins. Its pale blue colour fades on prolonged light exposure. The primary commercial source of strontium, used in fireworks to produce red colours.
Identity
- Formula
- SrSO₄
- Chemical class
- sulfate
- Mineral group
- Barite
- Also known as
- Celestite
Crystallography
- Crystal system
- orthorhombic
- Habits
- tabular, prismatic, massive, nodular
- Fracture
- uneven
Physical properties
- Mohs hardness
- 3.5
- Density
- 3.96 g/cm³
- Luster
- vitreous, pearly
- Colors
- pale blue, colorless, white, pink, gray
- Streak
- white
- Transparency
- transparent, translucent
Geology
- Origins
- sedimentary
- Host rocks
- limestone, dolomite, evaporite
- Associated minerals
- Sulfur, Calcite, Gypsum, Halite
- Geography
- Madagascar, USA, UK, Germany, Italy
Classification
- Rarity
- uncommon
- Gem quality
- No
Arcane properties
- Affinity
- air, light
- Effects
- warding, scrying
- Planar origin
- Material Plane
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