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psammite
:''This article is about a type of sedimentary rock. For the work by Archimedes, Psammites, see The Sand Reckoner.
Psammite (Greek ''psammos'', sand) is a general term for sandstone. It is equivalent to the Latin-derived term arenite.〔U.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.〕 Also, it 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.〔 Pettijohn 〔Pettijohn 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:
==References==
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