metamorphic

Specular hematite-bearing metamorphic rock

Hematite (Fe₂O₃) in quartz-rich metamorphic host, possibly iron formation or quartzite

AI-generated identification · may be incorrect

Dark gray to reddish-brown, locally metallic or submetallic luster with silver reflective patches; likely hardness about 5–6 overall (hematite 5–6.5), no obvious cleavage, and granular/recrystallized texture. The reflective areas may be specular hematite, while pale zones appear quartz or feldspar.

Identified September 4, 2026More metamorphic →

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Physical properties

Formation & geological history

Likely formed when iron-rich sediment or volcanic material was metamorphosed and recrystallized, commonly during Precambrian geological events. Exact identification and age require a fresh surface, streak, magnetism, and laboratory analysis.

Uses & applications

Primarily a collecting specimen; hematite is an important iron ore, while quartzite may be used as crushed stone or dimension stone. Not typically gem-quality from this appearance.

Geological facts

Hematite’s red-brown streak is diagnostic even when the specimen looks steel-gray; it is generally weakly magnetic or nonmagnetic, unlike magnetite. The image cannot reliably distinguish iron formation, hematitic quartzite, or another metamorphic iron-rich rock.

Field identification & locations

Test an inconspicuous area with an unglazed porcelain tile: hematite leaves a red to reddish-brown streak. Check for glassy quartz grains, metallic flakes, and weak magnetism; common sources include Precambrian banded iron formations worldwide.