mineral

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

AI-generated identification · may be incorrect

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

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

Identified June 18, 2026More mineral →

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Physical properties

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

Formation & geological history

Forms in hydrothermal veins, pegmatites, and as a primary mineral in igneous rocks like granite. The white color is caused by tiny liquid or gas inclusions trapped during crystal growth.

Uses & applications

Used in glassmaking, abrasives, electronics (piezoelectric properties), and as decorative landscaping stone or ornamental material.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz specifically is white due to 'fluid inclusions' trapped during its formation millions of years ago.

Field identification & locations

Look for a glassy white appearance that can scratch glass. It is commonly found in gravel beds, near gold deposits, or as veins within larger rock outcrops worldwide.