Jisho

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Noun
1. troostite (transitional constituent of steel)
Wikipedia definition
2. WillemiteWillemite is a zinc silicate mineral and a minor ore of zinc. It is highly fluorescent (green) under shortwave ultraviolet light. It occurs in all different colors in daylight, in fibrous masses, solid brown masses ("troostite"), and apple green gemmy masses. It was discovered in 1830 and named after William I of the Netherlands.
Read “Willemite” on English Wikipedia
Read “トルースタイト” on Japanese Wikipedia
Read “Willemite” on DBpedia

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