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Rare earth mineral From Wikipedia, the free encyclopedia
Aeschynite-(Y) (or Aeschinite-(Y), Aeschynite-(Yt), Blomstrandine, Priorite) is a rare earth mineral of yttrium, calcium, iron, thorium, titanium, niobium, oxygen, and hydrogen with the chemical formula (Y,Ca,Fe,Th)(Ti,Nb)2(O,OH)6. Its name comes from the Greek word for "shame". Its Mohs scale rating is 5 to 6.
| Aeschynite-(Y) | |
|---|---|
-180743.jpg) A fine, well-terminated, complete all-around aeschynite-(Y) crystal from Iveland, Norway | |
| General | |
| Category | Oxide mineral |
| Formula (repeating unit) | (Y,Ca,Fe,Th)(Ti,Nb)2(O,OH)6 |
| IMA symbol | Aes-Y[1] |
| Strunz classification | 4.DF.05 |
| Crystal system | Orthorhombic |
| Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
| Space group | Pmnb |
| Identification | |
| Other characteristics |  Radioactive |
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