mineral

Milky quartz with green mineral staining

Quartz (SiO₂), with possible chlorite or epidote inclusions

AI-generated identification · may be incorrect

White, opaque to translucent, with a vitreous-to-greasy luster and irregular fracture; quartz has Mohs hardness 7, trigonal crystal structure, no cleavage, and specific gravity about 2.65. The green material cannot be identified confidently from the image alone.

Identified October 10, 2026More mineral →

Explore Milky quartz with green mineral staining in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Quartz commonly forms when silica-rich fluids cool in veins or cavities, across a wide range of geological ages and settings; green inclusions or surface staining may come from associated minerals.

Uses & applications

Quartz is used in glassmaking, electronics, and ornamental objects; attractive pieces may be collected or used in lapidary work.

Geological facts

Milky appearance results from tiny fluid or gas inclusions that scatter light. The specimen’s green coating could also be surface algae or another stain, rather than an inclusion.

Field identification & locations

Look for hardness near 7 and lack of cleavage; quartz scratches glass, though this rough specimen should be tested discreetly. Quartz occurs worldwide, especially in veins and pegmatites.