sedimentary
Quartz Sandstone
Quartz Arenite
Hardness: 6-7 (individual grains); Color: Tan, beige, or white; Luster: Dull/Earthy; Texture: Granular, clastic, or gritty; Specific Gravity: 2.3-2.6
- Hardness
- 6-7 (individual grains)
- Color
- Tan, beige, or white
- Luster
- Dull/Earthy
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Physical properties
Hardness: 6-7 (individual grains); Color: Tan, beige, or white; Luster: Dull/Earthy; Texture: Granular, clastic, or gritty; Specific Gravity: 2.3-2.6
Formation & geological history
Formed through the accumulation and cementation of mineral particles or rock fragments. Quartz sand is typically deposited in high-energy environments like beaches, deserts, or riverbeds and becomes lithified over millions of years.
Uses & applications
Used extensively in construction as an aggregate, in glass manufacturing, for paving, and in the production of silicon.
Geological facts
Sandstone makes up about 10-20% of all sedimentary rocks on Earth. It is highly porous and often serves as an important aquifer for groundwater or a reservoir for oil and natural gas.
Field identification & locations
Identify by its 'sandpaper' feel and visible sand grains cemented together. It can be found globally in outcrop formations and along coastal regions.
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