metamorphic
Orange Quartz / Quartzite
Silicon Dioxide (SiO2) with iron oxide inclusions
Hardness: 7 (Mohs scale); Color: Pale orange to cream; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Microcrystalline; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- Pale orange to cream
- Luster
- Vitreous to waxy
Identified More metamorphic →
Explore Orange Quartz / Quartzite in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 7 (Mohs scale); Color: Pale orange to cream; Luster: Vitreous to waxy; Crystal Structure: Trigonal/Microcrystalline; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed from the metamorphism of quartz-rich sandstone or through hydrothermal precipitation in veins. The orange coloration is typically caused by minute inclusions of iron oxides like hematite or goethite.
Uses & applications
Used primarily for landscaping, decorative gravel, jewelry (tumbled stones), and as a collection specimen for beginners.
Geological facts
Quartzite is so durable that it can survive extreme weathering that breaks down other rocks. It is one of the most abundant minerals in the Earth's crust.
Field identification & locations
Identify in the field by its inability to be scratched by a steel knife and its characteristic sugary texture or translucent appearance. Found worldwide in riverbeds and mountainous regions.
More like this
