metamorphic

Quartz-rich rock with chlorite/epidote vein

Milky quartz with green chlorite or epidote; exact identification requires testing

AI-generated identification · may be incorrect

White to translucent quartz with a dull vitreous luster and a contrasting moss-green vein. Quartz hardness is about 7 Mohs, lacks cleavage, and has a hexagonal crystal structure; the green mineral may be chlorite (Mohs 2–2.5) or epidote (Mohs 6–7).

Identified August 10, 2026More metamorphic →

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At a glance

Common name: Quartz-rich rock with chlorite/epidote vein
Scientific name: Milky quartz with green chlorite or epidote; exact identification requires testing
Category: metamorphic
Identified: August 10, 2026
Method: Standard

AI Estimated Value

Approximately $2–$15 for a small, common specimen; more if the green mineral forms attractive crystals or comes with documented provenance.

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 deposited quartz and green alteration minerals in a fracture, commonly during metamorphism. Its precise geological age cannot be determined from the photograph.

Uses & applications

Primarily a collecting specimen or decorative stone; quartz-rich material may be tumbled or used ornamentally, but this small piece has no significant industrial value.

Geological facts

The green band is not diagnostic from appearance alone: chlorite is typically soft and flaky, whereas epidote is harder and often pistachio-green.

Field identification & locations

Common in metamorphic and hydrothermal terrains worldwide, including veins cutting schist, gneiss, and volcanic rocks. Test hardness, streak, and cleavage; a magnifier can reveal flaky chlorite or granular epidote.