sedimentary
Sandstone
Arenite (Silicon Dioxide with various mineral cements)
Hardness: 6-7 on Mohs scale; Color: Tan, brown, or reddish; Luster: Dull/Earthy; Texture: Granular like sandpaper; Structure: Clastic
- Hardness
- 6-7 on Mohs scale
- Color
- Tan, brown, or reddish
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Tan, brown, or reddish; Luster: Dull/Earthy; Texture: Granular like sandpaper; Structure: Clastic
Formation & geological history
Formed over millions of years by the accumulation and cementation of sand-sized mineral grains or rock fragments, typically in desert, river, or ocean environments.
Uses & applications
Primarily used as a building material, in the manufacture of glass (if high silica content), and as a common landscaping stone.
Geological facts
Sandstone represents about 20-25% of all sedimentary rocks on Earth. Its porosity makes it a major reservoir for groundwater and petroleum.
Field identification & locations
Identify in the field by its sandpaper-like feel and visible grains. It is commonly found in sedimentary basins and canyonlands.
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