Rock Identifier
Reddish iron-rich rock, possibly hematite-bearing jasper (Likely hematite-rich jasper (microcrystalline quartz, SiO₂, colored by iron oxides); exact identification is uncertain from the photo) — mineral
mineral

Reddish iron-rich rock, possibly hematite-bearing jasper

Likely hematite-rich jasper (microcrystalline quartz, SiO₂, colored by iron oxides); exact identification is uncertain from the photo

AI-generated identification · may be incorrect

Opaque, reddish-brown with a dull to slightly waxy surface and irregular fracture; likely Mohs hardness 6–7 if jasper, or 5–6.5 if mainly hematite. Crystal structure is not discernible in the image.

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Physical properties

Opaque, reddish-brown with a dull to slightly waxy surface and irregular fracture; likely Mohs hardness 6–7 if jasper, or 5–6.5 if mainly hematite. Crystal structure is not discernible in the image.

Formation & geological history

Iron oxides commonly color silica-rich rocks during formation or later alteration. The specimen’s age and specific formation environment cannot be determined from appearance alone.

Uses & applications

Jasper is used for carvings, beads, and decorative objects; hematite is an important iron ore and is also used as pigment and in jewelry.

Geological facts

A pale patch may be a different mineral or a fresh fracture surface; color alone cannot confirm the identification.

Field identification & locations

Look for hardness, streak, and texture: jasper resists scratching by a steel nail and commonly has a white streak, while hematite gives a reddish-brown streak. Iron-rich red rocks occur worldwide.