The top documents tagged [small grains of magnetite]

Chemical Formula: Fe3O4 Devin.Mei 11B. Mineral Properties: Colour - black Hardness - 5.5-6.5 Streak- black Magnetism - yes Luster - metallic Effervescence.

Chemical Formula: Fe3O4 Devin.Mei 11B. Mineral Properties: Colour - black Hardness - 5.5-6.5 Streak- black Magnetism - yes Luster - metallic Effervescence.

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