General Information:
Chemical Formula:
SrSO4
Composition:
(Molecular Weight = 183.68 gm)
Strontium 47.70 % Sr
Sulfur 17.46 % S
Oxygen 34.84 % O
Empirical Formula:
Sr(SO4)
Environment:
Sedimentary rocks.
IMA Status:
Approved IMA 1964
Locality:
Kelley Island, Lake Erie.
Name Origin:
From the Latin coelestis, meaning "celestial."
Physical Properties:
Cleavage:
[001] Perfect, [210] Good
Color:
blue, brown, colorless, green, or gray.
Density:
3.9 - 4, Average = 3.95
Diaphaniety:
Transparent to subtranslucent
Habits:
Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Massive - Uniformly indistinguishable crystals forming large masses., Granular - Generally occurs as anhedral to s ubhedral crystals in matrix.
Hardness:
3-3.5 - Calcite-Copper Penny
Luminescence:
None.
Luster:
Vitreous (Glassy)
Streak:
white
More details...