mineral

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: Translucent to milky white with dark inclusions (possibly hematite or goethite). Luster: Vitreous to greasy. Crystal structure: Hexagonal/trigonal. Cleavage: Indistinct/conchoidal fracture.

Hardness: 7 on Mohs scale
Luster: Vitreous to greasy

Identified July 11, 2026More mineral →

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Physical properties

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments through the cooling of silica-rich magma or precipitation from hydrothermal fluids. This specimen appears to be a small fragment from a quartz vein.

Uses & applications

Raw quartz is used in glassmaking, abrasives, and as a source of silicon for electronics. Translucent pieces with interesting inclusions are popular for mineral collecting or lapidary work.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust. Identifying inclusions (like the dark spots seen here) can often reveal the temperature and pressure conditions at which the crystal grew.

Field identification & locations

Identify in the field by its hardness (will scratch glass), conchoidal fracture, and lack of true cleavage. Found globally in a wide variety of geological terrains.