Sandstone (with man-made markings)

Physical Properties

Hardness: 6-7 (Mohs scale); Color: Tan/Brown; Luster: Dull/Earthy; Crystal Structure: Clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8

Formation & Geological History

Formed through the accumulation and cementation of mineral particles or rock fragments (sand) over millions of years, typically in river beds, deserts, or ocean floors.

Uses & Applications

Commonly used in construction, paving, and as millstones; this specific piece serves as a decorative or novelty item/paperweight.

Geological Facts

Sandstone is one of the most common sedimentary rocks on Earth and makes up about 10-20% of all sedimentary rocks in the Earth's crust.

Field Identification & Locations

Identify by its gritty, sand-like texture and visible layers (bedding). This specimen has been modified with permanent marker writing 'I <3 Money'.

Identified on: 4/22/2026

Mode: Standard