Aeschynite-(Y)

Aeschynite-(Y)
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

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.

• List of minerals

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