Brannerite

Formula: UTi₂O₆ or (U,Ca,Th,Y)(Ti, Fe)₂O₆ Mohs scale hardness: 4,5 - 5,5

Specific gravity: 5,2 g/cm³

Rare earth elements: Y

Other constituents, %: U, Th, Ti

^{Mineralklasse: Oxide}

Uses: a major ore of uranium and radium, a source of helium and as a mineral specimen

It is highly radioactive (U)

Brannerite is a highly radioactive and interesting mineral.

Brannerite is found in the same settings as gold, including placers, quartz veins, and in granite pematities. It may be black, but is more often found in shades of yellow to brown to green. It forms only tiny crystals, which