anatase
/ˈanəˌtās/ /-ˌtāz
/noun
One of the tetragonal forms of titanium dioxide, usually found as brown crystals, used as a pigment in paints and inks.Small well-developed brown anatase crystals replacing larger titanite crystals have been collected from Corral Canyon, Churchill County, Nevada....
- McCrone discovered that the Vinland Map, purporting to show that Leif Ericson had visited America some five centuries before Columbus, had traces of anatase, a pigment not synthesized until about 1920.
- Similar though typically smaller anatase crystals were found with secondary copper and zinc minerals at the Eldorado mine, Montgomery County, and with quartz in Alexander County.
Origin
Early 19th century: from French, from Greek anatasis 'extension', with allusion to the length of the crystals.