General Information:
Chemical Formula:
(Ce,Y)2([ ],Fe++)Be2Si2O8(OH,O)2
Composition:
(Molecular Weight = 518.75 gm)
Cerium 40.51 % Ce
Yttrium 8.57 % Y
Beryllium 3.47 % Be
Iron 5.38 % Fe
Silicon 10.83 % Si
Hydrogen 0.39 % H
Oxygen 30.84 % O
Empirical Formula:
Ce1.5Y0.5Fe2+0.5Be2Si2O8(OH)2
Environment:
Occurs in pegmatite.
IMA Status:
Approved IMA
Locality:
Iwaguro Sekizai quarry, Tahara area, Hirukawa, Ena, Gifu Prefecture, Japan.
Name Origin:
Named for it's relationship to hingganite-(Y).
Physical Properties:
Color:
reddish brown.
Density:
4.66
Diaphaniety:
Transparent to Translucent
Hardness:
6-7 - Orthoclase-Quartz
Luster:
Vitreous (Glassy)
Streak:
white
More details...