mineral

Green copper-bearing mineral specimen, possibly chrysocolla or malachite

Tentatively chrysocolla, hydrated copper aluminosilicate; may include malachite, Cu₂CO₃(OH)₂

AI-generated identification · may be incorrect

Blue-green, dull to vitreous, irregular and likely botryoidal or massive texture; chrysocolla hardness is about 2–4 Mohs, while malachite is 3.5–4. Specific gravity is roughly 2.0–4.0 depending on composition; no reliable cleavage is visible.

Identified August 17, 2026More mineral →

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At a glance

Common name: Green copper-bearing mineral specimen, possibly chrysocolla or malachite
Scientific name: Tentatively chrysocolla, hydrated copper aluminosilicate; may include malachite, Cu₂CO₃(OH)₂
Category: mineral
Identified: August 17, 2026
Method: Standard

AI Estimated Value

About $2–$15 for a small common fragment; $20–$100+ for vivid, well-formed chrysocolla or malachite specimens.

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 above copper deposits through interaction of copper-rich fluids with groundwater and host rock. It is generally geologically young relative to its host ore, commonly associated with quartz, limonite, azurite, and malachite.

Uses & applications

Primarily a collector specimen; attractive pieces may be cut or polished for cabochons and ornamental objects. Copper minerals are also indicators and minor ores of copper deposits.

Geological facts

The color strongly suggests copper mineralization, but the small, blurry specimen cannot be identified confidently from appearance alone. Chrysocolla is often confused with turquoise, smithsonite, and blue-green slag or glass.

Field identification & locations

Common localities include Arizona, Nevada, Chile, Peru, the Democratic Republic of the Congo, and Australia. Field confirmation requires hardness, streak, specific gravity, and ideally chemical or Raman testing; avoid licking or prolonged skin contact with unknown copper minerals.