mineral

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

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

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

Identified June 7, 2026More mineral →

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Physical properties

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

Formation & geological history

Formed predominantly from hydrothermal veins or the cooling of silica-rich magma (pegmatites). This specimen shows typical milky appearance due to microscopic fluid inclusions trapped during crystal growth.

Uses & applications

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

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz gets its color from tiny bubbles of gas or liquid trapped as the crystal formed millions of years ago.

Field identification & locations

Identified in the field by its hardness (scratches glass), lack of cleavage, and waxy/vitreous luster. Commonly found worldwide in mountain ranges and riverbeds. This specimen features dark metallic or mica-like inclusions.

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