Quartzite with Iron Mineral Banding

Physical Properties

Hardness: 7 (Mohs scale); Color: Creamy white with a distinct yellow/orange band; Luster: Vitreous to waxy; Structure: Crystalline (granular); Specific Gravity: ~2.65

Formation & Geological History

Formed through the metamorphism of quartz-rich sandstone. The yellow banding indicates the presence of iron oxide (limonite or goethite) that seeped into the rock layers over geological time.

Uses & Applications

Commonly used as decorative river stone, in landscaping, or as a pocket stone for collectors. Industrial grade quartzite is used in construction and glassmaking.

Geological Facts

Quartzite is so hard that it can scratch glass and steel. This specific specimen has been polished by river or water action, giving it a smooth 'pebble' texture and highlighting the chemical stain of the iron banding.

Field Identification & Locations

Identify in the field by its superior hardness and resistance to chemical weathering. It is often found in river beds or glacial deposits. Collectors look for unique banding or 'meat-stone' appearances.

Identified on: 4/13/2026

Mode: Standard