mineral
Sand Grain (Quartz / Feldspar)
Silicon dioxide (SiO2) or Potassium Feldspar (KAlSi3O8)
AI-generated identification · may be incorrectHardness 6-7 Mohs, translucent pinkish-tan hue, vitreous luster, sub-angular to sub-rounded clastic habit, specific gravity ~2.6.
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Physical properties
Hardness 6-7 Mohs, translucent pinkish-tan hue, vitreous luster, sub-angular to sub-rounded clastic habit, specific gravity ~2.6.
Formation & geological history
Formed through the mechanical and chemical weathering and erosion of felsic igneous or metamorphic rocks like granite.
Uses & applications
Major component of construction aggregates, concrete, mortar, glassmaking, and abrasive materials.
Geological facts
Individual sand grains typically range from 0.0625 mm to 2.0 mm in diameter. Quartz is the most common mineral in sand due to its chemical resistance.
Field identification & locations
Identified by its tiny sub-millimeter grain size, durability, and resistance to acid; abundant on beaches, riverbeds, and dunes globally.
