mineral

Vuggy Quartz on Matrix

Crystalline Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale; Color: White to translucent; Luster: Vitreous/glassy in vugs, dull on matrix; Crystal Structure: Hexagonal/Trigonal; Cleavage: None/Conchoidal fracture.

Hardness: 7 on Mohs scale
Color: White to translucent
Luster: Vitreous/glassy in vugs, dull on matrix

Identified June 1, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: White to translucent; Luster: Vitreous/glassy in vugs, dull on matrix; Crystal Structure: Hexagonal/Trigonal; Cleavage: None/Conchoidal fracture.

Formation & geological history

Formed via hydrothermal precipitation where silica-rich fluids circulated through voids (vugs) in host rock, typically during or after the formation of the primary rock unit. Common in volcanic or sedimentary environments.

Uses & applications

Primarily collected for mineral interest or used in architectural aggregate; larger, purer versions used in electronics and glass manufacturing.

Geological facts

The term 'vug' refers to a small to medium-sized cavity in a rock that is lined with crystals. These druzy crystals are often the same mineral as the host rock but in a more crystalline form.

Field identification & locations

Identified by its ability to scratch glass and the presence of small, sparkling crystal faces inside a cavity. Look for white, hard mineral veins in host rock. Found globally in quartz-rich terrains.