General Information:
Chemical Formula:Sr(La,Ce)(CO3)2(OH)·(H2O)
Composition:(Molecular Weight = 381.87 gm)Strontium 22.95 %
SrLanthanum 27.28 %
LaCerium 9.17 %
CeHydrogen 0.79 %
H Carbon 6.29 %
C Oxygen 33.52 %
O Empirical Formula: SrLa0.75Ce0.25(CO3)2(OH)·(H2O)
Environment:In hydrothermal veins in nepheline syenites.
IMA Status:Approved IMA (Dana # Added)
Locality:Marchenko Peak, Mount Kukisvumchorr, Khibina massif, Kola Peninsula, Russia.
Name Origin:Named for the composition and from the Greek "curved," in allusion to the rounded and distorted character of the crystals.
Physical Properties: Cleavage:None
Color:yellow or yellowish brown.
Density:3.88
Diaphaniety:Translucent
Habits:Crystalline - Fine - Occurs as well-formed fine sized crystals., Pyramidal - Crystals are shaped like pyramids.,
Hardness:4-4.5 - Between Fluorite and Apatite
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
Streak:white
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