sedimentary

Quartz-rich sandstone

Sandstone, chiefly quartz (SiO₂) grains

AI-generated identification · may be incorrect

Likely fine- to medium-grained, tan/golden sandstone with abundant reflective quartz grains and iron-oxide staining or cement. Quartz hardness is 7 Mohs, vitreous luster, hexagonal crystal structure; sandstone is granular and typically lacks cleavage.

Identified August 27, 2026More sedimentary →

Explore Quartz-rich sandstone in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Formation & geological history

Formed when sand—commonly quartz derived from weathered continental rocks—was deposited, compacted, and cemented, often in river, beach, dune, or shallow-marine settings. The image cannot establish a precise age; sandstone ranges from Archean to Recent.

Uses & applications

Used as building stone, paving, landscaping material, aggregate, and occasionally ornamental stone. Commercial value is generally modest unless it is a distinctive architectural or collectible specimen.

Geological facts

The sparkly appearance may result from quartz grains, mica, or reflective cement; a close image alone cannot distinguish these confidently.

Field identification & locations

Look for visible sand-sized grains, gritty texture, bedding, and weak reaction to dilute acid; quartz grains resist scratching by steel. Common worldwide, especially in sedimentary basins.