Octahedral Pyrite Cluster – Huanzala Mine, Peru – 0.27 lbs

A highly lustrous Octahedral Pyrite Cluster from the renowned Huanzala Mine in Peru, featuring dozens of intergrown metallic crystals arranged in a dramatic upright formation. Mounted on a custom display base, the specimen presents a dense wall of natural geometric forms with exceptional brilliance and strong visual impact from multiple angles.

The cluster is dominated by sharply angular octahedral and modified octahedral crystals, many displaying complex combinations of triangular, polygonal, and subtly striated faces. Broad reflective surfaces shift from brilliant brass-gold to deep gunmetal tones depending on the lighting and viewing angle, creating an almost mirror-like appearance.

Numerous crystals overlap across the front of the specimen, producing a richly textured composition with larger geometric faces emerging above tightly intergrown smaller crystals. Natural growth markings, stepped surfaces, contacts, and edge variations preserve the specimen’s authentic geological character.

Measuring approximately 3 × 0.5 × 3 inches and weighing 0.27 pounds, this slender specimen offers impressive vertical presence without requiring significant display space. Its unusual crystal habit, intense metallic luster, dense crystallization, and prestigious Huanzala locality make it an attractive collector piece.

Specifications

Mineral: Pyrite

Formation: Intergrown octahedral and modified octahedral crystal cluster

Locality: Huanzala Mine, Huallanca District, Áncash, Peru

Weight: 0.27 lbs (approximately 122 grams)

Dimensions: Approximately 3 × 0.5 × 3 inches

Color: Metallic brass-gold with dark reflective tones

Crystal Habit: Octahedral to modified octahedral intergrown crystals

Luster: Brilliant metallic to mirror-like

Transparency: Opaque

Crystal System: Isometric

Chemical Formula: FeS₂

Condition: Natural mineral specimen with inherent contacts, growth textures, minor edge irregularities, and surface variations

Treatment: Natural crystal faces; not cut or polished

Mounting: Affixed to a custom display base

Display: Upright collector specimen

Exact specimen shown

About Huanzala Pyrite

Pyrite is an iron sulfide mineral with the chemical formula FeS₂. Its metallic brilliance and brass-gold coloration inspired the familiar nickname “fool’s gold,” although fine crystallized specimens are highly regarded collector minerals.

Pyrite crystallizes in the isometric system and can develop as cubes, octahedrons, pyritohedrons, and combinations of these geometric forms. Modified crystals may display numerous faces, producing complex shapes that appear almost sculpted despite being entirely natural.

The lines, stepped patterns, and textured areas visible across the crystal faces are natural growth features created during crystallization. Because pyrite is intensely reflective, individual faces may appear bright gold, silver-gray, or nearly black as they reflect their surroundings.

The Huanzala Mine is a famous polymetallic mining locality known among collectors for producing exceptional pyrite alongside sphalerite, galena, quartz, calcite, and other minerals. Huanzala pyrite is especially appreciated for its strong metallic luster, geometric crystallization, and complex intergrown formations.

Collector Notes

This specimen features:

• Natural pyrite from the Huanzala Mine, Peru
• Abundant octahedral and modified octahedral crystals
• Dense intergrown geometric formation
• Brilliant metallic to mirror-like luster
• Brass-gold and dark gunmetal reflections
• Large polygonal faces surrounded by smaller crystals
• Fine natural striations and stepped growth patterns
• Complex three-dimensional crystal architecture
• Slender profile with excellent vertical presence
• Custom display base produced in-house
• Classic material from a celebrated Peruvian locality
• One-of-a-kind natural mineral formation
• Exact specimen pictured

Perfect for collectors of Huanzala pyrite, Peruvian minerals, octahedral crystals, geometric minerals, metallic specimens, isometric crystals, mounted minerals, and naturally architectural formations.

Professionally packaged and shipped from Colorado.

You will receive the exact specimen shown.

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