mineral

Milky Quartz with Inclusions

Quartz (Silicon Dioxide, SiO2)

AI-generated identification · may be incorrect

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

Identified April 7, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed through the crystallization of silica-rich hydrothermal fluids in veins or as a late-stage mineral in igneous rocks like granite. The 'milky' appearance is caused by tiny inclusions of gas or liquid trapped during crystal growth.

Uses & applications

Used in glassmaking, abrasives, electronics (piezoelectric properties), and as a gemstone for jewelry or metaphysical collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is often associated with gold-bearing veins, making it a primary indicator for prospectors.

Field identification & locations

Identify in the field by its hardness (will scratch glass), lack of cleavage, and waxy luster. Commonly found in mountainous regions, riverbeds, and as garden gravel.