Assertion: alumina | /r/AtLocation | hexagonal χ phase
Facets:
value: χ
type: OTHER
Source sentences:
text: Aluminium oxide also exists in other, metastable, phases, including the cubic γ and η phases, the monoclinic θ phase, the hexagonal χ phase, the orthorhombic κ phase and the δ phase that can be tetragonal or orthorhombic.