mĭnĭārĭus — Lewis & Short
mĭnĭārĭus, a, um, adj.id.,
I of or belonging to minium or cinnabar (post-Aug.):
miniarium metallum,a cinnabar mine, Plin. 33, 7, 40, § 118.—
II Subst.: mĭnĭā-rĭa, ae, f., or mĭnĭārĭum, ii, n., a cinnabar mine, Plin. 33, 7, 40, § 121.