mineral

Hematite Pebble

Hematite (Fe2O3)

Hardness: 5.5-6.5 on Mohs scale. Color: Dark gray to black, often with a metallic sheen or reddish undertones. Luster: Metallic to submetallic or earthy. Crystal system: Trigonal. Streak: Cherry-red to reddish-brown. Specific gravity: 5.26.

Hardness: 5
Luster: Metallic to submetallic or earthy
Streak: Cherry-red to reddish-brown

Identified July 29, 2026More mineral →

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Physical properties

Formation & geological history

Forms in diverse environments including hydrothermal veins, sedimentary iron formations (BIFs), and volcanic regions. Formed over billions of years through the precipitation of iron-rich minerals in ancient oceans.

Uses & applications

Used as an ore of iron, in jewelry, carvings, and as a polishing powder (jeweler's rouge). Also collected as a mineral specimen.

Geological facts

Hematite is the primary ore of iron. When finely powdered, it produces a distinct reddish-brown streak, which is a key diagnostic property despite the stone's dark, metallic appearance.

Field identification & locations

Easily identified by its characteristic heavy weight relative to its size (high specific gravity), dark metallic appearance, and unmistakable reddish-brown streak when scratched on unglazed porcelain. Commonly found in stream beds as smoothed pebbles or in massive deposits worldwide.