sedimentary
Conglomerate
Polymictic Conglomerate
Hardness: 6-7 (based on clasts), Color: Mottled brown/grey, Luster: Dull/Earthy, Crystal Structure: Clastic, Cleavage: None, Specific Gravity: 2.6-2.8
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Physical properties
Hardness: 6-7 (based on clasts), Color: Mottled brown/grey, Luster: Dull/Earthy, Crystal Structure: Clastic, Cleavage: None, Specific Gravity: 2.6-2.8
Formation & geological history
Formed by the lithification of rounded gravel and pebbles in high-energy environments like river beds or beaches. Geological age varies widely.
Uses & applications
Primarily used as a decorative stone in construction, heavy aggregate for concrete, and as a geological indicator of ancient river systems.
Geological facts
Conglomerate is essentially 'nature's concrete.' It tells a story of ancient water movement powerful enough to tumble and round stones.
Field identification & locations
Identify by the presence of rounded rock fragments (clasts) larger than 2mm cemented in a finer matrix. Found in sedimentary basins worldwide.
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