mineral

Chrysocolla-bearing copper ore, possibly malachite

Chrysocolla: hydrated copper aluminosilicate, approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O; green bands may be malachite, Cu₂CO₃(OH)₂

AI-generated identification · may be incorrect

Blue-green to gray, earthy to subvitreous luster, commonly massive with thin botryoidal or fibrous zones; Mohs hardness about 2–4 (chrysocolla) and 3.5–4.5 (malachite). The specimen appears to show a fine-grained or polished fracture surface rather than distinct crystals.

Identified September 1, 2026More mineral →

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At a glance

Common name: Chrysocolla-bearing copper ore, possibly malachite
Scientific name: Chrysocolla: hydrated copper aluminosilicate, approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O; green bands may be malachite, Cu₂CO₃(OH)₂
Category: mineral
Identified: September 1, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a small common specimen; $30–$150+ for vividly colored, polished, or well-patterned material.

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 as a secondary copper-mineral coating in oxidized zones above copper sulfide deposits, commonly by groundwater alteration; generally younger than the primary host rock and potentially formed over millions of years.

Uses & applications

Used as a copper ore when abundant and as a decorative or cabochon material; attractive pieces are collected, though soft chrysocolla is unsuitable for hard-wearing jewelry.

Geological facts

Chrysocolla is often intergrown with malachite, azurite, quartz, and limonite, producing distinctive turquoise-to-green patterns. It can resemble turquoise but is generally softer and less uniformly colored.

Field identification & locations

Look for vivid blue-green color, irregular banding, low hardness, and association with copper minerals; avoid acids and prolonged water exposure. Common localities include Arizona, Nevada, Chile, Peru, Russia, and the Democratic Republic of the Congo.