mineral

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide with Iron Oxide (SiO2 with traces of Fe2O3/FeO(OH))

Hardness: 7 (Mohs scale); Color: Yellowish-brown to rusty orange due to iron staining; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: ~2.65

Hardness: 7 (Mohs scale)
Color: Yellowish-brown to rusty orange due to iron staining
Luster: Vitreous to waxy

Identified March 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes where silicon-rich fluids crystallize in veins or cavities. The iron staining occurs during or after formation when iron-rich groundwaters permeate the quartz, depositing limonite, hematite, or goethite.

Uses & applications

Common specimens are primarily of interest to hobbyist collectors or used in landscaping; high-purity quartz is used in electronics and glass manufacturing; semi-precious varieties are used in lapidary work.

Geological facts

Quartz is one of the most abundant minerals on Earth's crust. Iron-stained quartz like this is often referred to as 'Golden Healer' by the metaphysical community, though it is geologically classified simply as ferruginous quartz.

Field identification & locations

Identify by its ability to scratch glass (high hardness), lack of cleavage, and characteristic rusty surface coating that does not wash off easily. Common in riverbeds, mountain ranges, and near mining districts globally.

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