mineral

Quartz with Mica/Schist inclusion

Silicon Dioxide (SiO2) with Phyllosilicates

AI-generated identification · may be incorrect

Hardness: 7 (Quartz component); Color: White to translucent milky quartz with dark gray to black inclusions; Luster: Vitreous to greasy; Crystal Structure: Trigonal (Quartz); Specific Gravity: ~2.65

Hardness: 7 (Quartz component)
Luster: Vitreous to greasy

Identified July 27, 2026More mineral →

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Physical properties

Hardness: 7 (Quartz component); Color: White to translucent milky quartz with dark gray to black inclusions; Luster: Vitreous to greasy; Crystal Structure: Trigonal (Quartz); Specific Gravity: ~2.65

Formation & geological history

Formed in pegmatites, hydrothermal veins, or metamorphic rock host environments where quartz crystallized alongside dark mica (biotite) or amphibole/schist matrix.

Uses & applications

Primarily collected as a decorative specimen or mineral sample, occasionally used in lapidary work.

Geological facts

Quartz is one of the most abundant minerals in Earth's continental crust. Inclusion-rich specimens record the complex thermal and chemical history of the fluids from which they grew.

Field identification & locations

Can be identified in the field by its hardness (scratches glass), glassy to milky luster, and distinct glassy cleavage-less fracture on the quartz parts contrasting with dark mineral inclusions. Found worldwide in granitic terrains.