man-made composite

Asphalt Chunk

Asphalt concrete

AI-generated identification · may be incorrect

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

Identified August 2, 2026More man-made composite →

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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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Dalmatian jasper

Porphyritic microcrystalline quartz-rich rock, commonly sold as Dalmatian jasper; spots are chiefly arfvedsonite/amphibole minerals, sometimes altered feldspar

igneous