mineral

Malachite-bearing copper ore, possibly chrysocolla

Malachite (Cu₂CO₃(OH)₂), with possible chrysocolla (Cu₂−xAlx(H₂−xSi₂O₅)(OH)₄·nH₂O) and host rock

AI-generated identification · may be incorrect

Hardness about 3.5–4 for malachite and 2.5–3.5 for chrysocolla; green to blue-green, earthy to waxy luster, generally opaque, with botryoidal or massive textures rather than distinct crystals. The pink-brown areas may be iron-rich matrix or another copper mineral; composition cannot be confirmed visually.

Identified August 31, 2026More mineral →

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At a glance

Common name: Malachite-bearing copper ore, possibly chrysocolla
Scientific name: Malachite (Cu₂CO₃(OH)₂), with possible chrysocolla (Cu₂−xAlx(H₂−xSi₂O₅)(OH)₄·nH₂O) and host rock
Category: mineral
Identified: August 31, 2026
Method: Standard

AI Estimated Value

Approximately $5–$30 for a small common specimen; $50–$200+ for attractive, confirmed, well-patterned malachite/chrysocolla.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Forms in oxidized zones of copper deposits when groundwater alters primary copper sulfides, commonly during the Cenozoic or older ore-deposit cycles. Common localities include Arizona, Nevada, New Mexico, Chile, the Democratic Republic of Congo, Russia, and Australia.

Uses & applications

Malachite is used as an ornamental stone, pigment, cabochon, and copper ore; chrysocolla is mainly a lapidary and collector material. Avoid acids and prolonged water exposure, especially if chrysocolla-rich.

Geological facts

The rounded, lumpy surface is characteristic of botryoidal copper minerals. Malachite gives a green streak and reacts with dilute acid, while chrysocolla typically does not fizz strongly.

Field identification & locations

Identify by vivid green banding or botryoidal crusts, low hardness, and copper-mineral association; a streak test and laboratory analysis are needed for certainty. The specimen may be a polished or naturally weathered copper-ore piece.