mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Hardness: 7 on Mohs scale
Color: Opaque white to translucent
Luster: Vitreous (glassy) to greasy

Identified February 21, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the crystallization of silica-rich hydrothermal fluids in veins or as a primary constituent of igneous rocks like granite. The white color is caused by tiny inclusions of gas or liquid trapped during crystal growth. Found in deposits ranging from millions to billions of years old.

Uses & applications

Used in the manufacturing of glass, ceramics, and abrasives. In electronics, its piezoelectric properties are utilized. It is also common in landscaping, as a gemstone in costuming, and as a popular entry-level mineral for collectors.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is often found alongside gold in hydrothermal vein deposits, leading prospectors to associate white quartz veins with potential gold strikes.

Field identification & locations

Identify in the field by its ability to scratch glass, its lack of cleavage (it breaks in irregular, shell-like curves), and its white, 'waxy' appearance. Commonly found in riverbeds, mountains, and gravel pits across the globe. For collectors, look for pieces with distinct crystal faces.