sedimentary

Sandstone with Quartz Vein

Arenite with hydrothermal quartz intrusion

AI-generated identification · may be incorrect

Hardness: 6-7 (Mohs scale); Color: Pale yellow to tan; Luster: Dull/earthy matrix with vitreous vein; Crystal structure: Clastic (matrix), Trigonal (vein); Cleavage: None

Hardness: 6-7 (Mohs scale)
Color: Pale yellow to tan
Luster: Dull/earthy matrix with vitreous vein

Identified July 15, 2026More sedimentary →

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Physical properties

Hardness: 6-7 (Mohs scale); Color: Pale yellow to tan; Luster: Dull/earthy matrix with vitreous vein; Crystal structure: Clastic (matrix), Trigonal (vein); Cleavage: None

Formation & geological history

Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments over millions of years (Paleozoic to Cenozoic). The white line is a secondary quartz vein formed when silica-rich fluids filled a fracture.

Uses & applications

Commonly used in construction as a building stone or paving material. Specimens with interesting veins are popular for amateur geology collections.

Geological facts

Sandstone can preserve fossil footprints and ripple marks from ancient riverbeds or deserts. The quartz vein indicates the rock underwent tectonic stress that caused cracking.

Field identification & locations

Identify by its gritty, sandpaper-like texture and visible mineral grains. Often found in canyons, beaches, and desert outcrops. For collectors, the presence of a distinct vein adds visual interest.