hiortdahlite
noun
hiort·dahl·ite
ˈyȯ(r)tˌdäˌlīt,
-dəˌl-
plural -s
: a rare mineral (Ca,Na)13Zr3Si9(O,OH,F)33 consisting essentially of a sodium calcium zirconium silicate containing also fluorine and occurring as pale yellow tabular triclinic crystals
Word History
Etymology
Norwegian hiortdahlit, from T. H. Hiortdahl †1925 Norwegian chemist + Norwegian -it -ite