barkevikite
/ˌbɑːrkəˈvɪkɪt/Definitions
1. noun
A rare mineral, a niobate of sodium and calcium with the chemical formula Na2Ca2(Nb, Ta)2Ti3O15.
“The geologist discovered a new specimen of barkevikite in the remote mountain region.”
1. noun
A rare mineral, a niobate of sodium and calcium with the chemical formula Na2Ca2(Nb, Ta)2Ti3O15.
“The geologist discovered a new specimen of barkevikite in the remote mountain region.”