metamorphic

Quartz-bearing metamorphic rock (likely quartz vein in schist or altered granite)

Quartz (SiO₂) in a mica-rich host rock; exact identification requires testing

AI-generated identification · may be incorrect

Visible cream-white, glassy to waxy quartz contrasts with a dark brown-gray, fine-grained host. Quartz hardness is 7, with no cleavage and conchoidal fracture; the host may contain mica, feldspar, and iron oxides.

Identified September 17, 2026More metamorphic →

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At a glance

Common name: Quartz-bearing metamorphic rock (likely quartz vein in schist or altered granite)
Scientific name: Quartz (SiO₂) in a mica-rich host rock; exact identification requires testing
Category: metamorphic
Identified: September 17, 2026
Method: Standard

AI Estimated Value

Typically $1–$15 as an ordinary hand specimen; roughly $20–$75 if the quartz texture is especially attractive or locality-documented.

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 fluids filled a fracture, depositing quartz during regional metamorphism or hydrothermal alteration. The specimen’s exact geological age cannot be determined from the photograph.

Uses & applications

Quartz-rich rock is used for aggregate, silica, and decorative stone; attractive pieces may be collected but are generally low-value unless crystals or unusual textures are present.

Geological facts

The pale material appears massive quartz rather than a distinct gemstone. Brown coloration likely reflects weathering or iron-oxide staining.

Field identification & locations

Look for a glassy luster, hardness that scratches ordinary glass, and quartz’s lack of cleavage; a streak, acid, and fresh-break examination would help identify the host. Quartz veins occur worldwide in metamorphic belts and mineralized fracture zones.