Sand in cement or concrete. It differs from river sand by being more angular, and has somewhat different properties. Sand Sand is a granular material composed of finely divided rock and mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass. The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal settings is silica
Serpentine soil tolerant of extreme soil conditions, including: Physically these areas are characteristically steep, rocky, and vulnerable to erosion, which results in shallow soils. The shallow soils and sparse vegetation lead to elevated soil temperatures and dry conditions. Serpentine is a unique classification of soils as they are relatively rare, and exhibit distinct chemical properties. The soil in appearance is often reddish, brown, or gray in color. The parent material for serpentine soil is mostly derived from the rock serpentine, noted for its waxy greenish-silver to bluish-silver appearance. The rock has white streaks of mineral running through it that contain naturally occurring