mineral

Milky Quartz with Mica

Silicon Dioxide (SiO2) with Muscovite or Biotite inclusions

Hardness: 7 on the Mohs scale. Color: White to milky translucent with silvery-green or gray mica flakes. Luster: Vitreous to greasy on quartz, pearly on mica. Crystal Structure: Trigonal (quartz) and monoclinic (mica). Cleavage: None for quartz, perfect basal cleavage for mica. Specific Gravity: 2.65.

Hardness: 7 on the Mohs scale
Luster: Vitreous to greasy on quartz, pearly on mica

Identified August 3, 2026More mineral →

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Physical properties

Formation & geological history

Formed in hydrothermal veins, pegmatites, and metamorphic environments through the cooling and crystallization of silica-rich fluids under high pressure and temperature over millions of years.

Uses & applications

Used in mineral collecting, ornamental displays, crystal lapidary work, and sometimes as a decorative landscape stone.

Geological facts

Milky quartz is the most common variety of crystalline quartz found on Earth. The milky appearance is caused by microscopic fluid inclusions trapped during crystal growth.

Field identification & locations

Easily identified by its high hardness (scratches glass), white milky color, conchoidal fracture, and the presence of flaky mica minerals embedded within the matrix. Found worldwide.

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