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or in light production or detection applications. praseodymium is one of the rare earth elements found in didymium glass, which is used in safety goggles that block potentially harmful intense ultraviolet, infrared, and yellow light produced by during some types of welding and glassworking. fluoride
weight: earth - seawater (oceans), ppb by atoms: earth - crust (crustal rocks), ppb by weight: earth - crust (crustal rocks), ppb by atoms: sun - total, ppb by weight: sun - total, ppb by atoms: stream, ppb by weight: stream, ppb by atoms: meterorite (carbonaceous), ppb by weight: meterorite (carbonaceous...
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