metamorphic

Quartz-veined metamorphic rock, likely quartzite or schist

Quartz-rich metamorphic rock with a milky-quartz vein; exact host rock is indeterminate from the photo

AI-generated identification · may be incorrect

Mostly white to gray, granular and massive, with a prominent white vein. Quartz has Mohs hardness 7, vitreous-to-dull luster, and no cleavage; the gray host may contain mica or other minerals.

Identified September 25, 2026More metamorphic →

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At a glance

Common name: Quartz-veined metamorphic rock, likely quartzite or schist
Scientific name: Quartz-rich metamorphic rock with a milky-quartz vein; exact host rock is indeterminate from the photo
Category: metamorphic
Identified: September 25, 2026
Method: Standard

AI Estimated Value

About $1–$10 USD for a common hand-sized specimen; more if its locality or mineralogy is verified.

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

Mostly white to gray, granular and massive, with a prominent white vein. Quartz has Mohs hardness 7, vitreous-to-dull luster, and no cleavage; the gray host may contain mica or other minerals.

Formation & geological history

Likely formed when a quartz-rich vein filled a fracture in an older rock, followed or accompanied by metamorphism. The image alone cannot establish its geological age or precise host-rock type.

Uses & applications

Quartz-rich rocks are used as decorative and landscaping stone, aggregate, and sometimes silica feedstock; this small specimen is mainly suited to collecting.

Geological facts

The white band is consistent with milky quartz, one of the most common vein-forming minerals. A hardness test on a fresh surface can help distinguish quartz-rich material from softer carbonate rocks.

Field identification & locations

Look for the sharp color contrast between the white vein and gray host; quartz should scratch glass and resist scratching by a steel knife. Similar specimens occur in metamorphic terrains worldwide.