Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Rock Type: Sedimentary (Synthetic)

Physical Properties
Hardness: 3-7 Mohs (variable by aggregate); Color: Grey/Blue-grey; Luster: Dull/Earthy; Structure: Granular/Porous; Specific Gravity: 2.2-2.5
Formation & Geological History
Man-made through the hydration of Portland cement mixed with water, sand, and gravel. It is a modern industrial 'rock' formed through chemical precipitation and lithification in molds.
Uses & Applications
Used extensively in construction for landscaping, driveways, walkways, and patios due to its durability and uniform shape.
Geological Facts
While not a natural geological formation, concrete is the most widely used man-made material on Earth. It chemically mimics the process of natural conglomerate rock formation.
Field Identification & Locations
Identify by its uniform rectangular shape, porous grey texture, and lack of natural crystalline veins. Commonly found in residential yards and public parks.
Identified on: 4/23/2026
Mode: Standard