a mine of information

a person or a book with a lot of information (often + about ) He's a mine of information about the cinema.

Name	Pronounced	Usage
Nicholas	NIK-ə-ləs (English), nee-ko-LAH (French)	English, French
Coco	KO-ko	Various
Najden	-	Macedonian
RuaidrÍ	-	Irish
Arif	-	Arabic, Indonesian, Urdu, Punjabi, Bengali
NgẢI	-	Vietnamese