Magnetite for the oxide minerals magnetite ore. An equiaxed crystal. Octahedral crystals were, dodecahedron. Crystal surface with stripes. Mostly grain massive collection. Iron black, or a dark indigo color. Streak black, semi-metallic luster. Opaque. No cleavage. Fracture uneven. Hardness of 5.5 to 6.5. Density of 5.16 ~ 5.18g/cm3. With strong magnetic. Brittle. Odorless, tasteless. Often produced in igneous rocks, metamorphic rocks. Beach sand is also often present. Distribution of Shandong, Hebei, Henan, Liaoning, Heilongjiang, Inner Mongolia, Hubei, Yunnan, Guangdong, Sichuan, Shanxi, Jiangsu, Anhui.
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