
Conglomerate is a sedimentary rock composed of rounded pebbles and boulders cemented together. It forms in high-energy environments like rivers and beaches where large particles are deposited. Conglomerate provides clues about ancient landscapes and erosion patterns.
| Texture | Clastic (rounded fragments) |
| Colors | Variable, depends on pebble composition |
| Magnetism | Variable |
| Grain Size | Coarse-grained (pebbles > 2mm) |
| Hardness | Variable (depends on cement) |
| Density | 2.0-2.7 g/cm³ |
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Main Elements:
Variable
Chemical Composition:
Variable, depends on the composition of pebbles and cementing material
Generally safe, but be careful of sharp edges when handling broken conglomerate.
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Polished: $0.30-$2 per piece
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Density:
2.0-2.7 g/cm³
Compressive Strength:
Variable
Melting Point:
Variable
Formation:
Forms in high-energy environments like rivers, beaches, and alluvial fans where rounded pebbles are deposited and cemented together.
Composition:
Composed of rounded pebbles and boulders (clasts) cemented together by silica, calcite, or iron oxide.
Types:
Etymology:
Derived from the Latin word "conglomerare" meaning "to roll together", referring to its composition of rounded fragments.
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Uses:
Distribution:
Found worldwide in ancient river deposits and alluvial fans
Historical Use:
Used in construction and as decorative stone. Provides important clues about ancient river systems.
Symbolism:
Represents unity, diversity, and the power of water
Conglomerate contains rounded pebbles, while breccia contains angular fragments. Both are sedimentary rocks with large particles.
Conglomerate is found in ancient river deposits, alluvial fans, and beach environments where large particles were deposited.
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