mineral

Likely hematite-rich ironstone or metallic mineral fragment

Hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄) or metallic iron

AI-generated identification · may be incorrect

Dark gray to black, rough fractured surfaces, and a submetallic to metallic luster; hardness is approximately 5–6.5 (hematite) or 5.5–6.5 (magnetite), with no obvious cleavage. The image is insufficient to determine density, magnetism, or streak.

Identified August 9, 2026More mineral →

Explore Likely hematite-rich ironstone or metallic mineral fragment in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Iron oxides form through oxidation and hydrothermal or sedimentary concentration of iron, while magnetite forms in igneous and metamorphic settings; age depends on locality and may range from Precambrian to recent. The jagged shape may represent a naturally broken ore specimen or industrially fractured piece.

Uses & applications

Iron ores are processed for steel production; attractive specimens are collected, though this example appears modest rather than gem quality.

Geological facts

Hematite typically gives a red-brown streak, whereas magnetite gives a black streak and is strongly magnetic. A polished metallic-looking surface alone cannot confirm native metal or a meteorite.

Field identification & locations

Test with a strong magnet, unglazed porcelain streak plate, and heft; hematite is unusually dense but nonmagnetic, while magnetite is magnetic. Common sources include banded iron formations and iron-ore districts worldwide.