sedimentary
Sandstone (with man-made markings)
Arenite (composed primarily of Quartz, SiO2)
Hardness: 6-7 (Mohs scale); Color: Tan/Brown; Luster: Dull/Earthy; Crystal Structure: Clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8
- Hardness
- 6-7 (Mohs scale)
- Color
- Tan/Brown
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 (Mohs scale); Color: Tan/Brown; Luster: Dull/Earthy; Crystal Structure: Clastic texture; Cleavage: None; Specific Gravity: 2.2-2.8
Formation & geological history
Formed through the accumulation and cementation of mineral particles or rock fragments (sand) over millions of years, typically in river beds, deserts, or ocean floors.
Uses & applications
Commonly used in construction, paving, and as millstones; this specific piece serves as a decorative or novelty item/paperweight.
Geological facts
Sandstone is one of the most common sedimentary rocks on Earth and makes up about 10-20% of all sedimentary rocks in the Earth's crust.
Field identification & locations
Identify by its gritty, sand-like texture and visible layers (bedding). This specimen has been modified with permanent marker writing 'I <3 Money'.
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