1) Calcium mineral 2) Trigonal mineral
Found on
https://www.crosswordclues.com/clue/alluaivite
Alluaivite is an exceedingly rare mineral of the eudialyte group, with complex formula written as Na19(Ca,Mn)6(Ti,Nb)3Si26O74Cl·2H2O. It is unique among the eudialyte group as the only titanosilicate (other representatives of the group are usually zirconosilicates). It is named after Mt. Alluaiv in Lovozero Tundry massif, Kola Peninsula, Russia, ...
Found on
http://en.wikipedia.org/wiki/Alluaivite
No exact match found.
