Ferruginous Quartz

Physical Properties

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

Formation & Geological History

Formed through hydrothermal processes in veins or within pegmatites. The yellow/orange coloring is a secondary staining or inclusion of hematite/limonite that occurs as groundwater rich in iron interacts with the quartz crystals over geological time.

Uses & Applications

Used primarily as decorative garden stone, in landscaping, and architectural filler. High-quality specimens are popular among amateur mineral collectors and used in lapidary work for cabochons.

Geological Facts

Quartz is the second most abundant mineral in Earth's continental crust. This specific 'rusty' appearance is often called 'Iron Quartz' or 'Golden Healer' in metaphysical communities.

Field Identification & Locations

Identify by its ability to scratch glass, its waxy to glassy luster, and the presence of irregular internal fractures. Commonly found in riverbeds, beaches, and mountain runoff areas worldwide.

Identified on: 5/3/2026

Mode: Standard