Sandstone

Physical Properties

Hardness: 6-7 (Mohs scale), Color: tan, grey, or light green, Luster: dull/earthy, Structure: granular and clastic, Specific Gravity: 2.2-2.8

Formation & Geological History

Formed through the accumulation and cementation of sand-sized mineral grains or rock fragments, typically in river beds, deserts, or marine environments over millions of years.

Uses & Applications

Used extensively in construction as a building material, paving, and in the manufacturing of glass and abrasives.

Geological Facts

Sandstone makes up about 20-25% of all sedimentary rocks on Earth and is often a primary reservoir for underground water (aquifers) and oil/gas.

Field Identification & Locations

Identify in the field by its gritty, sand-paper like texture even when weathered. Look for bedding planes or layers. Found globally in basins and mountainous regions.

Identified on: 4/22/2026

Mode: Standard