mineral
Specular Hematite
Hematite (Fe2O3)
Hardness 5.5-6.5 on Mohs scale. Metallic to splendent luster, dark metallic gray to black color, hexagonal/trigonal crystal structure, reddish-brown streak, uneven fracture.
Identified More mineral →
Explore Specular Hematite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness 5.5-6.5 on Mohs scale. Metallic to splendent luster, dark metallic gray to black color, hexagonal/trigonal crystal structure, reddish-brown streak, uneven fracture.
Formation & geological history
Formed in high-grade metamorphic rocks, hydrothermal veins, or banded iron formations (BIFs). The location near Minas Gerais, Brazil (approx. 20.1°S, 42.0°W) is world-famous for major hematite and iron ore deposits within the Iron Quadrangle (Quadrilátero Ferrífero).
Uses & applications
Major ore of iron, used in steel manufacturing, pigments, radiation shielding, cabochons, and as a popular collector's mineral specimen.
Geological facts
Specular hematite contains tiny mica-like flakes that sparkle brightly under light. Despite its metallic silver-black surface, scraping it against unglazed porcelain leaves a diagnostic reddish-brown streak.
Field identification & locations
Identify by high specific gravity (feels heavy for its size), metallic sparkle/reflection, and characteristic cherry-red to reddish-brown streak test. Very abundant in Minas Gerais, Brazil.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Limonite / Goethite (Iron Ore Mineral nodule)
FeO(OH)·nH2O / FeO(OH)
mineral
Schist
Schist
Metamorphic
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Sandstone with Mineral Veining or Crust
Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)
sedimentary