
mineral
Hematite Nodule
Hematite (Fe2O3)
AI-generated identification · may be incorrectHardness 5.5-6.5 on Mohs scale, reddish-brown to steel-gray color, metallic to dull luster, and a characteristic reddish-brown streak.
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Physical properties
Hardness 5.5-6.5 on Mohs scale, reddish-brown to steel-gray color, metallic to dull luster, and a characteristic reddish-brown streak.
Formation & geological history
Formed through aqueous deposition or weathering processes in sedimentary, metamorphic, and igneous environments over billions of years.
Uses & applications
Used as a major ore of iron, in pigments, jewelry, and polished as a grounding gemstone by collectors.
Geological facts
Hematite is the most important ore of iron and is also found on Mars, giving the planet its reddish hue.
Field identification & locations
Identified easily by its heavy weight and distinct reddish-brown streak; commonly found in iron-rich sedimentary formations worldwide.