Rock Identifier
Asphalt Chunk (Asphalt concrete) — man-made composite
man-made composite

Asphalt Chunk

Asphalt concrete

Dark, porous matrix containing small, light-colored aggregate pieces (sand, gravel, or crushed stone). Variable hardness depending on temperature and age.

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Physical properties

Dark, porous matrix containing small, light-colored aggregate pieces (sand, gravel, or crushed stone). Variable hardness depending on temperature and age.

Formation & geological history

Manufactured material made by mixing asphalt binder (bitumen) with mineral aggregate. Used extensively in paving roads and parking lots.

Uses & applications

Construction material for roads, pavements, and roofing.

Geological facts

Asphalt is highly recyclable, and reclaimed asphalt pavement (RAP) is commonly used in new asphalt mixes.

Field identification & locations

Identified by its dark, tar-like matrix binding small, distinct rock fragments. Often found broken off from edges of roads or driveways.

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Other man-made composite specimens

Asphalt (Road Aggregate) (Bituminous conglomerate) — sedimentary

Asphalt (Road Aggregate)

Bituminous conglomerate

sedimentary
Chakra Stone Tower (Composite Multi-Mineral) (Crystalline Silicon Dioxide composite (SiO2) with various inclusions) — mineral

Chakra Stone Tower (Composite Multi-Mineral)

Crystalline Silicon Dioxide composite (SiO2) with various inclusions

mineral
Mohave Turquoise (Composite/Stabilized) (Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions) — mineral

Mohave Turquoise (Composite/Stabilized)

Hydrated copper aluminium phosphate (CuAl6(PO4)4(OH)8·4H2O) with stabilizing resin and metallic inclusions

mineral
Terrazzo (Man-made Composite) (Cementitious or Resin-bound Lithic Composite) — sedimentary (artificial)

Terrazzo (Man-made Composite)

Cementitious or Resin-bound Lithic Composite

sedimentary (artificial)
Asphalt (Road Aggregate) (Bituminous Conglomerate / Asphalt Concrete) — Anthropogenic (Man-made)

Asphalt (Road Aggregate)

Bituminous Conglomerate / Asphalt Concrete

Anthropogenic (Man-made)
Concrete / Anthropogenic Conglomerate (Man-made composite material (Portland cement, aggregate, and water)) — not a natural rock

Concrete / Anthropogenic Conglomerate

Man-made composite material (Portland cement, aggregate, and water)

not a natural rock