mineral

Pyrite (iron pyrite), possibly in a sulfide-bearing rock

Pyrite, FeS₂

AI-generated identification · may be incorrect

Brassy yellow metallic luster with granular/crystalline reflective surfaces; Mohs hardness 6–6.5, no obvious cleavage, cubic crystal system, specific gravity about 5.0. The specimen appears weathered and matrix-bearing rather than a clean crystal.

Identified September 14, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins and sedimentary rocks, especially shale and limestone, by sulfur–iron mineralization. It commonly formed from Paleozoic to younger geological settings; exact age cannot be determined visually.

Uses & applications

Used historically as a sulfur source and minor iron ore; today mainly collected as a mineral specimen. Attractive pieces may be sold as “fool’s gold,” though this appears relatively common quality.

Geological facts

Pyrite is denser and harder than gold and commonly tarnishes to brown or iridescent coatings. It can oxidize in humid conditions, producing acidic sulfate minerals and damaging surrounding material.

Field identification & locations

Identify by its metallic brass color, high density, hardness, and tendency toward cubic or angular grains; it will not flatten or smear like gold. Pyrite and other sulfides are plausible around the Islamabad–Rawalpindi region, although this image cannot distinguish pyrite from chalcopyrite confidently.