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Webster 1913 Edition

Noun.

[Gr. [GREEK] sandy, from [GREEK] sand: cf. F.

psammite

(Min.)

A species of micaceous sandstone.

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Psam-mit′ic

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Adj.

Noun.

[Gr. sand.] A species of micaceous sandstone.

psammite ‎(countable and uncountable, plural psammites)

(mineralogy) Any sandstone, but most often a metamorphosed rock unit with a dominantly sandstone protolith.