mineral

Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: White/milky with yellow-brown iron oxide staining; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); SG: 2.65.

Hardness: 7 on Mohs scale
Color: White/milky with yellow-brown iron oxide staining
Luster: Vitreous to greasy

Identified April 20, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: White/milky with yellow-brown iron oxide staining; Luster: Vitreous to greasy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); SG: 2.65.

Formation & geological history

Formed through hydrothermal processes or igneous crystallization in pegmatites and veins. The yellow-brown staining occurs later through the oxidation of iron-bearing minerals (like pyrite) or exposure to groundwater.

Uses & applications

Used in glass manufacturing, electronics (due to piezoelectric properties), construction aggregates, and as a popular specimen for collectors.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Iron-stained quartz is sometimes colloquially referred to as 'Golden Healer' in metaphysical communities.

Field identification & locations

Identify in the field by its ability to scratch glass, lack of cleavage, and resistance to chemical weathering. It is found globally, particularly in mountainous regions and riverbeds.

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