Containing active metals, e.g. titanium or vanadium.

While cavansite does contain vanadium, and could thus be a possible ore source for the element, it is not generally considered an ore mineral.

The craton contains significant platinum, vanadium, hard-rock titanium and considerable iron ore resources.

Grade 9 contains 3.0% aluminium and 2.5% vanadium.

It is essentially a silicate of aluminia and potash containing vanadium.

Swordmakers used special high-carbon steel cakes, called wootz, which were made in India from iron ore that contained vanadium and other impurities.

His research focused on minerals containing uranium, vanadium, and various rare elements.

For example, Orinoco extra heavy oil contains 4.5% sulfur as well as vanadium and nickel.