metamorphic

Specular hematite-bearing metamorphic rock (likely micaceous schist)

Hematite–quartz–mica schist; iron oxide primarily hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄)

AI-generated identification · may be incorrect

Dark gray to black, strongly metallic or sparkly luster from mica and iron oxides; foliated, irregularly crystalline texture. Estimated hardness 5–6 overall; hematite is about 5–6.5 Mohs, with no obvious cleavage in the specimen.

Identified September 18, 2026More metamorphic →

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At a glance

Common name: Specular hematite-bearing metamorphic rock (likely micaceous schist)
Scientific name: Hematite–quartz–mica schist; iron oxide primarily hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄)
Category: metamorphic
Identified: September 18, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a common hand specimen; $30–$100+ if unusually attractive, dense, or locality-labeled.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Formed when iron-rich sediment or volcanic material was buried, heated, and compressed during metamorphism, commonly in Precambrian iron-formations. The exact geological age and locality cannot be determined from the image alone.

Uses & applications

Used mainly as a collectible or educational specimen; hematite is an important iron ore, while micaceous schist may be used locally as decorative stone or aggregate.

Geological facts

The silvery glitter may be specular hematite or reflective mica; a strong magnet would suggest magnetite, whereas hematite is weakly magnetic or nonmagnetic. A reddish-brown streak on unglazed porcelain strongly supports hematite.

Field identification & locations

Common in iron-rich metamorphic terrains, including the Lake Superior region, Brazil, India, and South Africa. Look for foliation, metallic flakes, high density, and a red-brown streak; the coin provides scale.