mineral
Quartz (Citrine or Iron-Stained)
SiO2
AI-generated identification · may be incorrectHardness: 7 on Mohs scale. Color: pale yellow, whitish. Luster: vitreous (glassy) to waxy. Crystal structure: trigonal. Cleavage: none, exhibits conchoidal fracture.
- Hardness
- 7 on Mohs scale
- Color
- pale yellow, whitish
- Luster
- vitreous (glassy) to waxy
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Physical properties
Hardness: 7 on Mohs scale. Color: pale yellow, whitish. Luster: vitreous (glassy) to waxy. Crystal structure: trigonal. Cleavage: none, exhibits conchoidal fracture.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments. The yellow color is often due to trace iron impurities.
Uses & applications
Used in jewelry, crystal healing, and as a collectible.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust.
Field identification & locations
Can be identified by its hardness (scratches glass) and conchoidal fracture. Common worldwide.
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