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Definition of neighborite in English:
neighborite
noun
MineralogyAn orthorhombic fluoride of sodium and magnesium, NaMgF₃, which occurs as colourless to pink crystals, isostructural with perovskite. Also ("potassium neighborite"), a similar mineral in which potassium replaces sodium.
Origin
1960s. From the name of Frank Neighbor, U.S. geologist + -ite.
