Search Results for: Polishing pads of iron
minerals ; as a result economically exploitable ore deposits are less common. [ ] the first rare-earth mineral discovered ( ) was gadolinite , a mineral composed of cerium, yttrium, iron, silicon, and other elements. this mineral was extracted from a mine in the village of ytterby in sweden ; four of
city of one of its discoverers. lasers , wavelength calibration standards for optical spectrophotometers , magnets er erbium after the village of ytterby, sweden. infrared lasers , vanadium steel , fiber-optic technology tm thulium after the mythological northern land of thule . portable x-ray machines...
https://en.wikipedia.org/wiki/Rare-earth