Minerals identify

Know how to recognize them

Reederite-(Y)

Carbonate mineral

Reederite-(Y) is a rare mineral with the formula (Na,Mn,Fe)15(Y,REE)2(CO3)9(SO3F)Cl. It is the only known mineral with fluorosulfate (fluorosulfonate). "REE" in the formula stands for rare earth elements other than yttrium, that is mostly cerium , dysprosium. The formula also includes a Levinson suffix "-(Y)" pointing to the dominance of yttrium at the corresponding site. Reederite-(Y) crystallizes in the hexagonal crystal system with the space group P6, rarely seen among minerals.

Identification

Color of mineral

Yellow
Orange
Brown

The streak

White

Luster ( interacts light )

Vitreous

Crystal ( diaphaneity )

Hexagonal