sedimentary
Sandstone (Common Quartz Pebble/Rock)
Sedimentary rock / Quartz arenite
Hardness: 7 (due to quartz grains); Color: Brown, tan, or light grey; Luster: Dull to earthy; Crystal structure: Microcrystalline or clastic; Specific Gravity: 2.2 - 2.8
- Hardness
- 7 (due to quartz grains)
- Color
- Brown, tan, or light grey
- Luster
- Dull to earthy
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Physical properties
Hardness: 7 (due to quartz grains); Color: Brown, tan, or light grey; Luster: Dull to earthy; Crystal structure: Microcrystalline or clastic; Specific Gravity: 2.2 - 2.8
Formation & geological history
Formed by the accumulation, compaction, and cementation of mineral particles or rock fragments, predominantly quartz, often in riverbeds, deserts, or marine environments.
Uses & applications
Used in construction, building facades, paving, and decorative landscaping.
Geological facts
Sandstone can preserve ancient environments and ripple marks from prehistoric rivers and deserts.
Field identification & locations
Commonly found in sedimentary basins worldwide. Identified by its granular texture resembling coarse sandpaper.
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Other sedimentary specimens
Sandstone or Siltstone
Arenite (if sandstone)
Sedimentary
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
fossil
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
sedimentary
Banded Siltstone / Mudstone Pebble
Siltstone / Argillite
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary