sedimentary

Quartz-veined Sedimentary Rock

Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)

AI-generated identification · may be incorrect

Hardness: Matrix 3-6 / Veins 7 (Mohs); Color: Tan/grey matrix with white veins; Luster: Dull to vitreous; Crystal structure: Microcrystalline; Cleavage: None/Conchoidal in veins; Specific gravity: ~2.65

Hardness: Matrix 3-6 / Veins 7 (Mohs)
Color: Tan/grey matrix with white veins
Luster: Dull to vitreous

Identified January 28, 2026More sedimentary →

Explore Quartz-veined Sedimentary Rock 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 through the accumulation of mineral particles or rock fragments (matrix), later fractured by tectonic stress. Hot, mineral-rich hydrothermal fluids then filled these cracks, precipitating silica to form white quartz veins.

Uses & applications

Primarily used as aggregate in construction, road base, and decorative landscaping. Some specimens are used in lapidary work as 'wishing stones'.

Geological facts

The appearance of a continuous line or 'belt' around a stone has led to cultural myths, such as 'wishing stones' where a circle of quartz is said to grant luck. These veins are geological records of the rock's stress history.

Field identification & locations

Identify by looking for distinct, protruding white lines (veins) that are harder than the surrounding host rock. Commonly found in riverbeds, glacial tills, and coastal beaches where water has polished the exterior.

Other sedimentary specimens

See all

Fossiliferous Sedimentary Rock

Sedimentary limestone with invertebrate fossil imprint

fossil

Sandstone or Siltstone

Arenite (if sandstone)

Sedimentary

Quartz pebble

Silicon dioxide (SiO2)

sedimentary

Generic Pebble / Rock Fragment

Lithic fragment / Weathered rock

sedimentary

Sedimentary Sandstone

Arenite (Sedimentary Rock)

sedimentary

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)

sedimentary