evaporite

[ih-vap-uh-rahyt]
noun Geology.
any sedimentary rock, as gypsum or rock salt, formed by precipitation from evaporating seawater.

Origin:
1920–25; evapor(ation) + -ite1

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World English Dictionary
evaporite (ɪˈvæpəˌraɪt)
 
n
any sedimentary rock, such as rock salt, gypsum, or anhydrite, formed by evaporation of former seas or salt-water lakes
 
[C20: evaporation + -ite1]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
evaporite   (ĭ-vāp'ə-rīt')  Pronunciation Key 
A sedimentary rock that consists of one or more minerals formed as precipitates from the evaporation of a saline solution, such as saltwater. Usually, the first evaporite to form from saltwater is calcium, followed by gypsum and then halite.
The American Heritage® Science Dictionary
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Example sentences
These low-density evaporite minerals were subsequently buried beneath higher density sedimentary rocks.
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