mineral

Milky Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

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 →

Explore Milky Quartz with Mineral Inclusions in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

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.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Sandstone with Mineral Veining or Crust

Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Gypsum (variety Selenite or Alabaster)

Calcium sulfate dihydrate (CaSO4·2H2O)

Mineral

Nephrite Jade

Nephrite

Mineral/Rock