Early 19th century; earliest use found in Robert Jameson (1774–1854), geologist and natural historian. From German Nigrin from classical Latin nigr-, niger black + German -in.
Definition of nigrine in US English:
nigrine
noun
Mineralogy
A black variety of rutile containing iron.
Origin
Early 19th century; earliest use found in Robert Jameson (1774–1854), geologist and natural historian. From German Nigrin from classical Latin nigr-, niger black + German -in.