mineral

Copper-bearing Quartz (likely Chrysocolla or Malachite staining)

Cuprite, Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) or Malachite staining on Quartz/Host Rock

AI-generated identification · may be incorrect

Hardness: 2-4 (staining) to 7 (host quartz); Color: Cyan-blue, green, reddish-brown, and white; Luster: Dull to vitreous; Structure: Amorphous or microcrystalline; Cleavage: None.

Hardness: 2-4 (staining) to 7 (host quartz)
Color: Cyan-blue, green, reddish-brown, and white
Luster: Dull to vitreous

Identified March 24, 2026More mineral →

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At a glance

Common name: Copper-bearing Quartz (likely Chrysocolla or Malachite staining)
Scientific name: Cuprite, Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) or Malachite staining on Quartz/Host Rock
Category: mineral
Identified: March 24, 2026
Method: Standard

AI Estimated Value

$5-$15 for raw landscaping or mine-run specimens; $30-$100+ for high-quality lapidary grade pieces with intense color.

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

Hardness: 2-4 (staining) to 7 (host quartz); Color: Cyan-blue, green, reddish-brown, and white; Luster: Dull to vitreous; Structure: Amorphous or microcrystalline; Cleavage: None.

Formation & geological history

Secondary oxidation zone of copper ore deposits. Formed when copper-rich solutions interact with silica and oxygen in weathered rock environments. Common in arid climates.

Uses & applications

Major indicator for copper mining; used as decorative 'lapidary' rough for jewelry when high grade; historical source of copper pigment.

Geological facts

The blue-green color is a classic signature of copper oxidation, often referred to as 'copper bloom.' The reddish-brown areas represent Limonite or Cuprite, indicating a rich mineralized zone.

Field identification & locations

Identify by the vibrant blue-green staining against a harder rock matrix. Found in Arizona (USA), Congo, and Chile. Collectors look for solid color saturation and stability.