mineral

Chrysocolla-bearing rock (likely chrysocolla in quartz/limonite matrix)

Chrysocolla, hydrated copper aluminosilicate: (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O

AI-generated identification · may be incorrect

Blue-green to turquoise coloration occurs as earthy coatings and patches with brown iron-oxide matrix; typically dull to waxy, microcrystalline, and non-cleavable. Mohs hardness is about 2.5–3.5 for chrysocolla, with variable hardness where quartz is present; specific gravity about 1.9–2.4.

Identified August 13, 2026More mineral →

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At a glance

Common name: Chrysocolla-bearing rock (likely chrysocolla in quartz/limonite matrix)
Scientific name: Chrysocolla, hydrated copper aluminosilicate: (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O
Category: mineral
Identified: August 13, 2026
Method: Standard

AI Estimated Value

Approximately $5–$25 for a rough hand specimen; $30–$150+ for attractive polished or gem-quality 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 in the oxidized zones of copper deposits when copper-rich fluids alter feldspar, mica, and silica. It is commonly Cenozoic to older, depending on the host deposit, and the specimen appears rough and unpolished.

Uses & applications

Used as a lapidary stone, cabochon material, pigment, and mineral specimen; softer pieces are often stabilized with resin. Common material generally has modest commercial value.

Geological facts

Chrysocolla is frequently associated with malachite, azurite, turquoise, quartz, and limonite, producing attractive blue-green mixtures often sold as “chrysocolla matrix.”

Field identification & locations

Common localities include Arizona, Nevada, Chile, Peru, Mexico, the Democratic Republic of Congo, and Australia. Identify it by its vivid blue-green copper staining, softness, earthy texture, and association with oxidized copper minerals; avoid acids and prolonged water exposure.