General Information:
Chemical Formula:SrSO4
Composition:(Molecular Weight = 183.68 gm)Strontium 47.70 %
SrSulfur 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
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