Chromite
From London's Ghost Acres
The most important ore for producing chromium. Chromium can be used as a pigment for glass, glazes, and paint, and more importantly as a oxidizer for tanning leather.
https://en.wikipedia.org/wiki/Chromite
The most important ore for producing chromium. Chromium can be used as a pigment for glass, glazes, and paint, and more importantly as a oxidizer for tanning leather.
https://en.wikipedia.org/wiki/Chromite