Rhabdophane-(Y)
Rhabdophane-(Y) is an IMA-recognized mineral species in the phosphate class, with the chemical formula Y(PO₄)·H₂O.
It crystallizes in the hexagonal crystal system (space group P6_222). It is a member of the Rhabdophane structural group.
Key properties: specific gravity 4.54; Yellowish white streak; Silky to dull luster.
IMA symbol Rha-Y, IMA status: approved, named in 2011.
Forms druses on alkaline olivine basalt.
It is found associated with Plagioclase, forsterite, augite, enstatite, magnetite, ilmenite.
As the Y-dominant analog of rhabdophane-(Ce).
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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