mineral

Milky Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale), Color: White to opaque milky white, Luster: Vitreous to greasy, Crystal structure: Trigonal/Hexagonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Identified June 2, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: White to opaque milky white, Luster: Vitreous to greasy, Crystal structure: Trigonal/Hexagonal, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65

Formation & geological history

Formed through the crystallization of magma or from hydrothermal veins. The milky appearance is caused by tiny inclusions of gas or liquid trapped during crystal growth. Can be found in rocks from almost any geological age.

Uses & applications

Used in the production of glass, ceramics, and as an abrasive. Also used in construction aggregate and as a semi-precious gemstone in jewelry or for decorative landscaping.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is a variety of quartz that often occurs in massive veins, sometimes associated with gold deposits.

Field identification & locations

Identify in the field by its hardness (it can scratch glass), white color, and lack of cleavage. It is commonly found in gravel, river beds, and mountain outcrops globally.