mineral
Quartz Druzy on Matrix
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Milky white to light tan/orange from iron staining; Luster: Vitreous to sparkling; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65.
- Hardness
- 7 on Mohs scale
- Color
- Milky white to light tan/orange from iron staining
- Luster
- Vitreous to sparkling
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Physical properties
Hardness: 7 on Mohs scale; Color: Milky white to light tan/orange from iron staining; Luster: Vitreous to sparkling; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65.
Formation & geological history
Formed from silica-rich hydrothermal fluids precipitating in rock cavities, fractures, or vugs. This often occurs during late-stage magmatic cooling or through groundwater movement in sedimentary rocks.
Uses & applications
Used primarily for metaphysical collecting, jewelry (as druzy pendants), and mineral specimens for display.
Geological facts
The word 'druse' or 'druzy' refers to a coating of fine crystals on a rock surface. Quartz is one of the most common minerals on Earth's crust, but well-crystallized druzy specimens are prized for their glittery 'sugar-like' appearance.
Field identification & locations
Identify in the field by its characteristic sparkle and ability to scratch glass. Commonly found in geodes, volcanic vugs, and hydrothermal veins. Collectors should look for undamaged crystal points.
