Golden Iron Pyrite on Limonite Matrix – Botryoidal Cluster, 250g | Pakistan

Specimen Overview This is a natural, unpolished iron pyrite specimen weighing approximately 250 grams, measuring 65 × 40 × 65 mm. The pyrite grows in a botryoidal (rounded, grape-cluster) habit — dense nodular masses of micro-cubic crystals that produce a strong metallic flash under light. The host matrix is a pale cream-to-tan limonite or weathered clay, typical of the sedimentary formations where this type of pyrite forms in Pakistan. Mineral Composition Mineral: Iron Pyrite (FeS₂) — iron sulfide Crystal Habit: Botryoidal nodules with micro-cubic crystal faces Matrix: Limonite (iron hydroxide) or weathered clay/shale Luster: Metallic, brass-yellow to silver-gold depending on angle Hardness: 6–6.5 on the Mohs scale Origin Sourced from notable pyrite localities in Khyber Pakhtunkhwa (Abbottabad district) and Balochistan, Pakistan. Both regions are known for producing botryoidal pyrite nodules embedded in sedimentary clay and limonite host rock. What You Receive One natural pyrite-on-matrix specimen, as shown. The specimen is raw and unprocessed — no polishing, coating, or chemical treatment has been applied. Minor surface dust or loose matrix particles are normal and can be gently brushed off with a dry brush. Care Instructions Keep dry — avoid soaking or prolonged moisture exposure. Water can degrade the clay/limonite matrix and accelerate surface oxidation on the pyrite. Store away from high humidity environments. If cleaning is needed, use a soft dry brush only. Frequently Asked Questions Q: Is pyrite on matrix more fragile than a standalone pyrite specimen? Yes. The clay or limonite matrix is softer than the pyrite itself and can crumble if wet or dropped. Handle the specimen from the matrix base and keep it dry to preserve structural integrity. Q: Does iron pyrite tarnish or rust over time? Pyrite can oxidize slowly when exposed to humidity and air, producing a dull surface or minor rust-colored staining. Storing the specimen in a low-humidity environment significantly slows this process. Q: What is the difference between botryoidal pyrite and cubic pyrite? Cubic pyrite forms distinct geometric cube-shaped crystals, while botryoidal pyrite grows in rounded, nodular masses made up of many tiny interlocking crystals. Both are iron sulfide (FeS₂); the difference is in growth conditions and crystal habit.