Metallic, metalline. Now chiefly colloquial.

Of (a bath of) water: containing dissolved metallic salts or minerals; (of steam) arising from such water. Of vapour: arising from or produced by…

Impregnated or flavoured with iron, esp. as a mineral water or spring; relating to such waters or preparations.

Containing iron, esp. in the form of hydrated oxides; = ferruginous, adj. 2.