Magnetite on Sandstone - South Africa -

Magnetite on Sandstone - South Africa -

1 LB 2 OZ

5" X 3" Approx

Magnetite

, a black, iron-rich mineral, is a common heavy mineral found in sandstone,

often appearing as black sand or streaks due to its density and magnetic properties

and can be concentrated by wind and water.

Composition: Magnetite is an iron oxide mineral with the chemical formula Fe3O4.

Appearance: It's black or brownish-black with a metallic luster and leaves a black streak.

Magnetic Properties: Magnetite is naturally magnetic, meaning it attracts magnets.

Hardness: It has a Mohs hardness of 5.5 to 6.5.

Density: Magnetite is a heavy mineral, denser than most other sand grains, which leads to its concentration in certain areas.

Occurrence: Magnetite is found in igneous, metamorphic, and sedimentary rocks.

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ITEM # 282