mineral

Milky quartz

Quartz (SiO₂), likely massive vein quartz

AI-generated identification · may be incorrect

White to translucent, vitreous to dull luster, irregular fracture and no obvious cleavage; Mohs hardness 7, trigonal crystal structure. Rust-colored patches may be iron-oxide staining.

Identified October 13, 2026More mineral →

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Physical properties

White to translucent, vitreous to dull luster, irregular fracture and no obvious cleavage; Mohs hardness 7, trigonal crystal structure. Rust-colored patches may be iron-oxide staining.

Formation & geological history

Forms when silica-rich fluids crystallize in fractures and veins, often during hydrothermal activity. Quartz is common in rocks of many geological ages; the specimen’s exact age and locality cannot be determined from the image.

Uses & applications

Used in glassmaking, ceramics, and industrial silica products; attractive pieces are collected or used decoratively, though this rough material is generally not gem grade.

Geological facts

Quartz is one of Earth’s most abundant minerals and resists weathering, so it is common in many sediments and rocks.

Field identification & locations

Likely identification: milky quartz; confirm with hardness (scratches glass) and lack of cleavage. Common worldwide in quartz veins and pegmatites; the image does not establish a specific source.