mineral
Specular Hematite (on Schist/Matrix)
Hematite (Alpha-Fe2O3)
AI-generated identification · may be incorrectHardness: 5.5-6.5; Color: Steel-gray to black with metallic sparkles; Luster: Specular/Metallic; Crystal Structure: Trigonal; Gravity: 5.26.
- Hardness
- 5
- Color
- Steel-gray to black with metallic sparkles
- Luster
- Specular/Metallic
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Physical properties
Hardness: 5.5-6.5; Color: Steel-gray to black with metallic sparkles; Luster: Specular/Metallic; Crystal Structure: Trigonal; Gravity: 5.26.
Formation & geological history
Formed through hydrothermal processes or metamorphism of iron-rich sedimentary rocks. This variety is often found in schists created under high-pressure metamorphic environments.
Uses & applications
Primary ore of iron. Used in pigments (ochre), jewelry (beads), and as a decorative collector mineral due to its sparkle.
Geological facts
Specularite gets its name from its mirror-like reflections. It is the same chemical composition as common rust, but in a highly crystalline form.
Field identification & locations
Identify by its characteristic sparkling 'glitter' effect and red-brown streak when rubbed on unglazed porcelain. Commonly found in major iron ranges like those in Michigan, Brazil, and Australia.
