Composition: Titanium oxide
Nomenclature: Named after the Latin word "rutilus," which means "reddish," a reference to the mineral's color.
Industrial Uses: Ore of titanium.
Additional Notes: Rutile is a polymorph with two other minerals, anatase and brookite. Polymorphs (a term that means "multiple forms") are minerals that have the same chemical composition--titanium oxide in the case of anatase, brookite, and rutile--but have different crystallographic structures.
Comoro Islands : Scott 933 : 1125 francs : 1998
Rutile in Quartz; Calcite; Wulfenite
Monaco : Scott 1725 : 3.20 franc : 4 Sep 1990