Arenite

A sandstone with less than 15% of very fine-grained interstitial material (silt and clay). i. A general name for sedimentary rocks composed of sand-sized fragments irrespective of composition; e.g., sandstone, graywacke, arkose, and calcarenite. Ref: AGI ii. A clean sandstone that is well sorted, contains little or no matrix material, and has a relatively simple mineralogical composition; specifically a pure or nearly pure, chemically cemented sandstone containing less than 10% argillaceous matrix and inferred to represent a slowly deposited sediment, well-washed by currents.---Adj. arenitic.