sedimentary

Quartzite Conglomerate

Conglomerate (clastic sedimentary rock)

AI-generated identification · may be incorrect

Hardness: 6.5-7 Mohs; Color: Tan, grey, and white clasts; Luster: Dull to waxy; Texture: Coarse-grained with rounded pebbles; Specific Gravity: 2.6-2.8

Hardness: 6
Color: Tan, grey, and white clasts
Luster: Dull to waxy

Identified July 6, 2026More sedimentary →

Explore Quartzite Conglomerate in the encyclopedia →

Identify your own rocks.

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

App Store Google Play

Physical properties

Hardness: 6.5-7 Mohs; Color: Tan, grey, and white clasts; Luster: Dull to waxy; Texture: Coarse-grained with rounded pebbles; Specific Gravity: 2.6-2.8

Formation & geological history

Formed through the lithification of rounded pebbles and sand-sized grains, typically in high-energy environments like riverbeds or beaches where water rounds the stones over time.

Uses & applications

Primarily used as construction aggregate, road base, and occasionally as decorative landscaping stones.

Geological facts

Conglomerates are like 'natural concrete'; the rounded shape of the pebbles indicates they traveled a long distance from their source before being deposited.

Field identification & locations

Identify by looking for rounded pebbles (clasts) cemented within a finer-grained matrix. Common in ancient river basins and mountain runoff areas. Collectors look for unique clast colors.