Magnetite and hematite occur together in layered sedimentary rocks called:

A) banded iron formations
B) dolomitic limestones
C) bedded oxides
D) magnetic stripes

Banded Iron Formations

Sedimentary rocks consisting of alternating layers of iron-rich minerals and silica, significant as a source of iron and as evidence of Earth's oxygenation.

Sedimentary Rocks

Rocks formed by the accumulation and consolidation of sediment, especially fragments of rocks, minerals, and organic matter.

Magnetite

A magnetic mineral form of iron oxide, often used as an iron ore or in magnetic applications.