Aeschynite-(Y)

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Aeschynite-(Y)
A fine, well-terminated, complete all-around aeschynite-(Y) crystal from Iveland, Norway
General
CategoryOxide mineral
Formula
(repeating unit)		(Y,Ca,Fe,Th)(Ti,Nb)2(O,OH)6
Strunz classification4.DF.05
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupPmnb
Identification
Other characteristics Radioactive

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 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.

References


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