magnetite

Converse of object

• contain: The pueblo contains magnetite, which makes it safe against the aliens.
• use: MISP will use magnetite from Phalaborwa, in South Africa, and natural gas from Pande, in the southern Mozambican province of Inhambane.
• discover: Not only that, but quite recently a guy called Joseph Caltech discovered magnetite in humans.
• call: Needles were magnetized by stroking them with a lodestone, a lump of magnetic rock called magnetite.

Adjective modifier

biogenic: Research suggests that only biogenic magnetite grows in such 3D shapes.

Modifies a noun

• crystal: However the growth history of these magnetite crystals may also be present in the distribution of chemical species within the crystals.
• ore: The furnace was heated with charcoal and magnetite ore from Sullom was smelted for 24 hours.
• particle: This would tend to attract and carry along any magnetite dust particles encountered as it descended from the ionosphere.

Preposition: in

rock: This answer lies in the magnetite in volcanic rock.