One of the mysteries of the English language finally explained.
A white to pale yellow or green mineral consisting of ferrous sulphate pentahydrate, often also containing copper and typically resulting from the oxidation of iron sulphides.
Late 19th century; earliest use found in Mineralogy Magazine. From German Siderotil from sidero- + Hellenistic Greek τίλος shred, fibre.
In this article we explore how to impress employers with a spot-on CV.