Sandstone (Painted)

Physical Properties

Hardness: 6-7 (Mohs scale); Color: Typically tan, brown, or yellow-tan; Luster: Dull/Earthy; Crystal structure: Clastic (sand-sized grains); Cleavage: None; Specific Gravity: 2.2-2.8

Formation & Geological History

Formed from the accumulation and cementation of sand-sized mineral particles or rock fragments. This occurs in various environments such as deserts, river beds, or beaches through lithification over millions of years.

Uses & Applications

Used widely in construction for building stone, pavers, and decorative landscaping. In industry, high-silica sandstone is used in glass making.

Geological Facts

Sandstone makes up about 10-25% of the sedimentary rock on Earth. The 'painted' aspect of this specimen suggests it was used as a 'kindness rock' or garden marker, which is a common hobbyist use.

Field Identification & Locations

Identify in the field by its gritty, sandpaper-like feel and visible grains. It often shows bedding layers. It is found globally in sedimentary basins.

Identified on: 4/15/2026

Mode: Standard