mineral

Tangerine Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite coatings

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale); Color: Orange, rust, gold; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Orange, rust, gold
Luster: Vitreous (glassy)

Identified July 15, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Orange, rust, gold; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed through the hydrothermal deposition of silica and the oxidation of iron minerals. The distinct orange color is caused by a surface coating of iron oxide (hematite or rust) that bonded to the quartz as it grew or after it formed, often in Madagascar or Brazil.

Uses & applications

Metaphysical and spiritual purposes, mineral collection, jewelry making, and ornamental decoration.

Geological facts

The orange color is a natural surface coating rather than an internal impurity. If soaked in certain acids, the orange coating can be stripped away, revealing clear quartz underneath.

Field identification & locations

Identify by the classic six-sided quartz crystal points and the characteristic 'rust' orange color that does not scratch off easily but may be lighter in protected crevices. Found primarily in Santinho, Brazil and parts of Madagascar.