mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: White to translucent with reddish-orange iron oxide staining; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture.

Hardness: 7 on Mohs scale
Color: White to translucent with reddish-orange iron oxide staining
Luster: Vitreous to greasy

Identified July 6, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: White to translucent with reddish-orange iron oxide staining; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture.

Formation & geological history

Formed from silica-rich hydrothermal fluids cooling in veins and pegmatites. These specimens are ubiquitous across almost all geological ages and environments, particularly in igneous and metamorphic terrains.

Uses & applications

Used in glass manufacturing, electronics (piezoelectricity), construction aggregate, jewelry, and as a popular specimen for beginner mineral collectors.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. The 'milky' appearance is caused by tiny bubbles of gas or liquid trapped during crystal growth.

Field identification & locations

Identify in the field by its hardness (scratches glass), lack of cleavage, and translucent white color. It is commonly found in stream beds, gravel pits, and mountain ranges worldwide.