mineral

Milky quartz-rich rock

Quartz, silicon dioxide (SiO₂), likely massive milky quartz with iron-oxide or feldspar impurities

AI-generated identification · may be incorrect

White to cream, massive and nonmetallic with a vitreous-to-waxy luster; quartz hardness is Mohs 7, with no cleavage and uneven conchoidal fracture. The specimen appears coarse, irregular, and possibly coated or weathered.

Identified September 15, 2026More mineral →

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At a glance

Common name: Milky quartz-rich rock
Scientific name: Quartz, silicon dioxide (SiO₂), likely massive milky quartz with iron-oxide or feldspar impurities
Category: mineral
Identified: September 15, 2026
Method: Standard

AI Estimated Value

Approximately $2–$15 for a common rough hand specimen; potentially $20–$50 if the pattern, translucency, or locality is unusually attractive.

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

Likely formed when silica-rich hydrothermal fluids filled a fracture, or as a quartz-rich vein in older igneous or metamorphic rocks; its exact geological age cannot be determined from the image. Common host settings include granitic terrains and metamorphic belts.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, engineered stone, and electronics; attractive pieces are sold as cabinet specimens or lapidary material. This specimen appears primarily collectible rather than gem quality.

Geological facts

Milky color results from microscopic fluid inclusions, fractures, or impurities scattering light. Quartz is one of Earth’s most abundant and chemically durable minerals.

Field identification & locations

Identify it by its glassy appearance, lack of cleavage, hardness sufficient to scratch ordinary glass, and conchoidal fracture; a steel nail should not scratch clean quartz. Common worldwide, especially in Brazil, Madagascar, the United States, and alpine or granitic regions.