Takanawaite-(Y)
Takanawaite-(Y) is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula YTaO₄.
It crystallizes in the monoclinic crystal system (space group I2/a). It is a member of the Fluorite structural group.
Key properties: Mohs hardness 5.5; specific gravity 6.97.
IMA symbol Tkw-Y, IMA status: approved, named in 2011.
Found in pegmatites in granite.
It is found associated with Gadolinite-(Y), zircon, muscovite, allanite-(Ce), quartz, feldspar.
The name refers to the locality from which the first specimens were obtained and a suffix for the dominant rare earth element.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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