GEOLOGY

EARTH SCIENCE

MINERALOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Minerals that crystalized from ions dissolved in water, whether in marine or freshwater environments, are called ____
A
Hematites
B
Feldspars
C
Pyroxenes
D
Basalts
E
Evaporites
Explanation: 

Detailed explanation-1: -Evaporites. Evaporite deposits are rocks composed mostly of minerals produced by evaporation of saline solutions. They range from carbonates to sulfates, chlorides and potassium-rich salts. These precipitates indicate that the climate was warm and arid.

Detailed explanation-2: -Minerals in evaporite rocks include carbonates (especially calcite, dolomite, magnesite, and aragonite), sulfates (anhydrite and gypsum), and chlorides (particularly halite, sylvite, and carnallite), as well as various borates, silicates, nitrates, and sulfocarbonates.

Detailed explanation-3: -You probably know halite by its more common name – salt! Halite, salt, is a type of mineral called an evaporite. Evaporites are minerals that are made out of ions that can be found dissolved in water, usually seawater. When water evaporates, it leaves these ions behind, which assemble together into evaporite minerals.

Detailed explanation-4: -Evaporite depositional environments When scientists evaporate ocean water in a laboratory, the minerals are deposited in a defined order that was first demonstrated by Usiglio in 1884. The first phase of precipitation begins when about 50% of the original water depth remains.

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