
mineral
Magnetic Hematite (Man-made)
Iron Oxide (Fe2O3) with Barium-Strontium Ferrite
Hardness: 5.5-6.5 on Mohs scale; Color: Black to steel-gray with a metallic luster; Crystal structure: Hexagonal (natural) or ceramic composite; Highly magnetic; Density: approx. 5.3 g/cm3.
- Hardness
- 5
- Color
- Black to steel-gray with a metallic luster
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Physical properties
Hardness: 5.5-6.5 on Mohs scale; Color: Black to steel-gray with a metallic luster; Crystal structure: Hexagonal (natural) or ceramic composite; Highly magnetic; Density: approx. 5.3 g/cm3.
Formation & geological history
While natural Hematite is formed in sedimentary, igneous, or metamorphic environments (often in banded iron formations), these specific 'stones' are man-made magnetic ceramics created by powdering hematite and magnetite and bonding them with ferrite under high heat.
Uses & applications
Used primarily for magnetic therapy jewelry, worry stones, executive desk toys (magnets), and mass-market souvenirs/education kits.
Geological facts
Natural hematite is usually only weakly magnetic. The strong magnetism in these tumbled stones is a result of industrial processing. Hematite is the most important ore of iron.
Field identification & locations
Identify by its 'gunmetal' metallic sheen and strong magnetic attraction. In the field, natural hematite is best identified by its reddish-brown streak on a porcelain plate, regardless of the outer color.
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