Psammite

{{Short description|General term for sandstone}}

{{about|the type of sedimentary rock|the work by Archimedes|The Sand Reckoner}}

Psammite (Greek: psammitēs "(made) from sand", from psammos "sand"){{LSJ|yammi/ths|ψαμμίτης}}, {{LSJ|ya/mmos|ψάμμος|ref}}. is a general term for sandstone. It is equivalent to the Latin-derived term areniteU.S. Bureau of Mines Staff (1996) Dictionary of Mining, Mineral, & Related Terms. Report SP-96-1, U.S. Department of Interior, U.S. Bureau of Mines, Washington, D.C.Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, J.A., eds. (2005) Glossary of Geology (5th ed.). Alexandria, Virginia, American Geological Institute, Washington, DC 779 pp. and is commonly used in various publications to describe a metamorphosed sedimentary rock with a dominantly sandstone protolith.Tyrell, G. W. (1921) Some points in petrographic nomenclature. Geological Magazine. v. 58, no. 11, pp. 494–502. In Europe, this term was formerly used for a fine-grained, fissile, clayey sandstone. PettijohnPettijohn F. J. (1975), Sedimentary Rocks, Harper & Row, {{ISBN|0-06-045191-2}} gives the following descriptive terms based on grain size, avoiding the use of terms such as "clay" or "argillaceous", which carry an implication of chemical composition: