metamorphic

Milky quartz vein rock

Quartz-rich vein material; predominantly silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Mostly opaque to translucent white-gray quartz with a vitreous luster and irregular fractures; quartz hardness 7 Mohs, trigonal crystal structure, no cleavage. Minor green or brown staining may come from associated minerals or weathering.

Identified October 6, 2026More metamorphic →

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Physical properties

Formation & geological history

Likely quartz deposited from silica-rich hydrothermal fluids in fractures, later exposed by erosion; the image alone cannot establish its age or exact host-rock setting.

Uses & applications

Quartz is used in glass, ceramics, electronics, and ornamental objects; this rough specimen is mainly suitable for collecting or lapidary work.

Geological facts

Milky appearance results from tiny fluid or gas inclusions and internal fractures that scatter light.

Field identification & locations

Identify by its glassy luster, hardness, and lack of cleavage; common in veins across many rock types worldwide. The pictured piece appears quartz-rich, but its exact locality and minor minerals cannot be determined visually.