Sandstone (Banded)

Hardness: 6-7 (depending on cementation); Color: Tan, brown, and cream bands; Luster: Dull to earthy; Texture: Granular/clastic; Structure: Stratified layering/bedding.

Formed from the lithification of sand-sized mineral grains or rock fragments. The visible bands represent different layers of sediment deposited over time in environments like riverbeds, deserts, or marine shorelines. The age varies by deposit location but can range from millions to hundreds of millions of years old.

Commonly used as a building material, paving stone, and in glass manufacturing (if high silica). Frequently used as decorative garden stones or for geological education.

Sandstone accounts for roughly 20-25% of all sedimentary rocks on Earth. The distinct banding seen in this specimen is often caused by variations in mineral content or grain size during deposition.

Identify in the field by its gritty 'sandpaper' feel and visible layers or bedding planes. It is commonly found in canyons, river valleys, and coastal bluffs. For collectors, look for high-contrast banding or unique shapes created by water erosion (like this 'flying saucer' or cobble shape).