Taneyamalite

General Information:
 Chemical Formula:
(Na,Ca)(Mn++,Mg)12[(Si,Al)6O17]2(O,OH)10
 IMA Status:
Approved IMA 1977
 Locality:
Iwaizama mine, Saitama Prefecture, Honshu, Japan.
 Name Origin:
Named for the Taneyama mine.
Physical Properties:
 Cleavage:
[010] Perfect
 Color:
greenish yellow or grayish yellow.
 Density:
3.3
 Hardness:
5 - Apatite
 Luster:
Vitreous (Glassy)
 Streak:
light yellow
More details...