ferromagnesian


fer·ro·mag·ne·sian

F0086400 (fĕr′ō-măg-nē′zhən)adj. Containing iron and magnesium.

ferromagnesian

(ˌfɛrəʊmæɡˈniːʒən) adj (Minerals) (of minerals such as biotite) containing a high proportion of iron and magnesium

fer•ro•mag•ne•sian

(ˌfɛr oʊ mægˈni ʒən, -ʃən)

adj. (of minerals and rocks) containing iron and magnesium. [1900–05]