mineral
Orange Quartz (Tangerine Quartz)
Silicon Dioxide (SiO2) with Hematite inclusions
AI-generated identification · may be incorrectHardness: 7 on Mohs scale; Color: Orange to reddish-orange; Luster: Vitreous; Crystal Structure: Trigonal; Cleavage: None; Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Orange to reddish-orange
- Luster
- Vitreous
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Physical properties
Hardness: 7 on Mohs scale; Color: Orange to reddish-orange; Luster: Vitreous; Crystal Structure: Trigonal; Cleavage: None; Specific Gravity: 2.65
Formation & geological history
Formed through the oxidation of hematite or goethite on the surface of quartz crystals, often in hydrothermal veins or sedimentary deposits.
Uses & applications
Primarily used for gemstone collecting, jewelry making, and metaphysical or decorative purposes.
Geological facts
The orange color is not inside the crystal but is a crust of iron oxide on the surface. If soaked in certain acids, the orange coating can be removed to reveal clear quartz.
Field identification & locations
Identify by its distinct orange coating over a hexagonal crystal structure. Commonly found in Brazil and Madagascar. Collectors look for undamaged terminations.
