POLYMIGNITE

General Information:

Chemical Formula:

(Ca,Fe,Y,Th)(Nb,Ti,Ta)O4

Physical Properties:

Color:

black.

Density:

4.77 - 4.85, Average = 4.8

Diaphaniety:

Subtranslucent to Opaque

Hardness:

6.5 - Pyrite

Luster:

Sub Metallic

More details...