Lewis Short
fŏdīna (noun F) : id.; a place from which a mineral is dug
* A pit, mine: argenti,Varr. R. R. 1, 2, 22; Vitr. 7, 7 (also written in one word argentifodina, v. h. v.); Dig. 27, 9, 3 al.; Plin. 33, 6, 31, § 98.
Charlton T. Lewis, Charles Short, A Latin Dictionary