sedimentary

Wonderstone (Sandstone)

Liesegang Banded Sandstone (SiO2 dominated)

Hardness: 6-7 on Mohs scale; Color: Tan, cream, reddish-brown, and pink swirls; Luster: Dull to earthy; Structure: Clastic with chemical banding; Cleavage: None (conchoidal fracture); Specific Gravity: 2.3-2.6.

Hardness: 6-7 on Mohs scale
Color: Tan, cream, reddish-brown, and pink swirls
Luster: Dull to earthy

Identified March 22, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the rhythmic precipitation of iron oxide (hematite or limonite) within porous sandstone or volcanic tuff. This 'Liesegang banding' occurs as groundwater saturated with minerals moves through the rock, often during the Cenozoic or Mesozoic eras.

Uses & applications

Commonly used for lapidary work, decorative garden stones, bookends, coasters, and small carvings. In industry, it is occasionally used as a minor architectural facing stone.

Geological facts

The unique swirling patterns are a chemical phenomenon called Liesegang rings, named after the chemist Raphael E. Liesegang. No two pieces are identical, making it a favorite for natural art collectors.

Field identification & locations

Identify by its distinct 'wood-grain' or flame-like swirling patterns of red and yellow. It is commonly found in the Southwestern United States, particularly Utah, Nevada, and Arizona. Collectors should look for patterns with high contrast.

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