mineral

Milky Quartz with Inclusions

Silicon Dioxide (SiO2) with mineral inclusions

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale), Color: White to off-white with dark green/brown inclusions, Luster: Vitreous to greasy, Crystal Structure: Trigonal (massive), Specific Gravity: 2.65

Identified July 17, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: White to off-white with dark green/brown inclusions, Luster: Vitreous to greasy, Crystal Structure: Trigonal (massive), Specific Gravity: 2.65

Formation & geological history

Formed from hydrothermal solutions or cooling magma in veins and pegmatites. The rounded shape suggests it was eroded and transported by water (river or glacial action).

Uses & applications

Commonly used as decorative garden stones, in construction aggregates, as a source for silicon in semiconductors, and as low-cost collector specimens.

Geological facts

Milky quartz gets its color from tiny fluid inclusions of gas or liquid trapped during crystal growth. Quartz is the second most abundant mineral in Earth's continental crust.

Field identification & locations

Identify by its hardness (scratches glass), waxy/glassy luster, and lack of cleavage (it breaks with conchoidal fracture). Very common in riverbeds and mountainous terrain worldwide.