Quartz with Iron Staining

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.

Identified on: 4/20/2026

Mode: Standard