mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Milky white to translucent
Luster: Vitreous to greasy

Identified July 4, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Milky white to translucent; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed from silica-rich hydrothermal solutions or within pegmatites. The milky appearance is caused by tiny liquid or gaseous inclusions trapped during crystal growth.

Uses & applications

Used in glass making, as an abrasive, in electronics for its piezoelectric properties, as landscaping stone, and in jewelry/metaphysical collections.

Geological facts

Milky quartz is one of the most common minerals in the Earth's crust. It is often the primary component of 'river rocks' due to its extreme durability and resistance to weathering.

Field identification & locations

Identify by its hardness (scratches glass), lack of cleavage, and white cloudiness. Frequently found in riverbeds, mountain outcroppings, and as veins in other host rocks worldwide.