enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Water of crystallization - Wikipedia

    en.wikipedia.org/wiki/Water_of_crystallization

    In chemistry, water(s) of crystallization or water(s) of hydration are water molecules that are present inside crystals. Water is often incorporated in the formation of crystals from aqueous solutions . [ 1 ]

  3. Mineral hydration - Wikipedia

    en.wikipedia.org/wiki/Mineral_hydration

    In inorganic chemistry, mineral hydration is a reaction which adds water to the crystal structure of a mineral, usually creating a new mineral, commonly called a hydrate. In geological terms, the process of mineral hydration is known as retrograde alteration and is a process occurring in retrograde metamorphism .

  4. Crystallization - Wikipedia

    en.wikipedia.org/wiki/Crystallization

    However, the release of the heat of fusion during crystallization causes the entropy of the universe to increase, thus this principle remains unaltered. The molecules within a pure, perfect crystal, when heated by an external source, will become liquid. This occurs at a sharply defined temperature (different for each type of crystal).

  5. Hydrate - Wikipedia

    en.wikipedia.org/wiki/Hydrate

    Nonpolar molecules such as methane can form clathrate hydrates with water, especially under high pressure. Although there is no hydrogen bonding between water and guest molecules when methane is the guest molecule of the clathrate, guest–host hydrogen bonding often forms when the guest is a larger organic molecule such as tetrahydrofuran .

  6. Evaporite - Wikipedia

    en.wikipedia.org/wiki/Evaporite

    An evaporite (/ ɪ ˈ v æ p ə ˌ r aɪ t /) is a water-soluble sedimentary mineral deposit that results from concentration and crystallization by evaporation from an aqueous solution. [1] There are two types of evaporite deposits: marine, which can also be described as ocean deposits, and non-marine, which are found in standing bodies of ...

  7. Fractional crystallization (geology) - Wikipedia

    en.wikipedia.org/wiki/Fractional_crystallization...

    In some compositions, at high pressures without water crystallization of enstatite is favored, but in the presence of water at high pressures, olivine is favored. [12] Granitic magmas provide additional examples of how melts of generally similar composition and temperature, but at different pressure, may crystallize different minerals.

  8. Cementation (geology) - Wikipedia

    en.wikipedia.org/wiki/Cementation_(geology)

    Minerals bond grains of sediment together by growing around them. This process is called cementation and is a part of the rock cycle. Cementation involves ions carried in groundwater chemically precipitating to form new crystalline material between sedimentary grains. The new pore-filling minerals form "bridges" between original sediment grains ...

  9. Magmatic water - Wikipedia

    en.wikipedia.org/wiki/Magmatic_water

    It plays a key role in assessing the crystallization of igneous rocks, particularly silicates, as well as the rheology and evolution of magma chambers. Magma is composed of minerals, crystals and volatiles in varying relative natural abundance. [1] Magmatic differentiation varies significantly based on various factors, most notably the presence ...