General Information:
Chemical Formula:(Ca,Ce)(Ce,La,Nd,Dy)Mn++2AlSiO4Si2O7(OH,F,O)2
IMA Status:Approved IMA
Physical Properties:
Cleavage:[001] Good
Color:brown or dark brown.
Density:4.05
Diaphaniety:Transparent
Hardness:5 - Apatite
Luster:Vitreous (Glassy)
Streak:brownish
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