Magnetite on Sandstone - Fully Magnetic ~South Africa -

Magnetite on Sandstone - Fully Magnetic ~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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