Zirconium from the Region of PoÇOs De Caldas Available to Purchase

Zircon occurs as single crystals, in crystal groups, and in botryoidal intergrowths with fibrous, radial zirconium oxide in the region of Pofçs de Caldas, Minas Gerais, Brazil. The forms noted are: p{111}, a{100}, m{110}, and x{311}. The amorphous zirconium oxide is believed to have been formed by precipitation from hot, ascending solutions that obtained their zirconium through the destruction of primary zirconium silicates (chiefly rosen-buschite, astrophyllite, and eudialyte). Much of the zircon appears to be later than the zirconium oxide and is believed to have resulted from the interaction of silica-bearing solutions with the oxide.