mineral cations saturation

См. также в других словарях:

• hydrosphere — /huy dreuh sfear /, n. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. [1885 90; HYDRO 1 + SPHERE] * * * Discontinuous layer of water at or near the Earth s surface. It… …   Universalium

• SPINELLES — Le groupe des spinelles est composé d’oxydes doubles répondant à la formule générale MO 練M 23 ou MM 24. Le métal bivalent M peut être Mg, Fe, Zn, Mn, Co, Ni, et le métal trivalent M Al, Fe, Cr, V, Ga, In. Par ailleurs, des métaux quadrivalents… …   Encyclopédie Universelle

• crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… …   Universalium

• Hard water — is the type of water that has high mineral content (in contrast with soft water ). Hard water minerals primarily consist of calcium (Ca2+), and magnesium (Mg2+) metal cations, and sometimes other dissolved compounds such as bicarbonates and… …   Wikipedia

• igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …   Universalium

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …   Universalium

• HUMUS — L’humus est la matière organique transformée par voie biologique et chimique et incorporée à la fraction minérale du sol, avec laquelle elle contracte des liens physico chimiques plus ou moins étroits. Par extension, le mot «humus» désigne… …   Encyclopédie Universelle

• ZÉOLITES — Le terme zéolite, retrouvé pour la première fois dans la littérature scientifique du XVIIIe siècle, est dérivé des deux mots grecs zein (bouillir) et lithos (pierre). L’origine de cette désignation reposait sur l’observation faite par le baron A …   Encyclopédie Universelle

• Normative mineralogy — is a geochemical calculation of the whole rock geochemistry of a rock sample that estimates the idealised mineralogy of a rock according to the principles of geochemistry. Normative mineral calculations can be achieved via either the CIPW Norm or …   Wikipedia

• magnetic ceramics — Introduction       oxide materials that exhibit a certain type of permanent magnetization called ferrimagnetism. Commercially prepared magnetic ceramics are used in a variety of permanent magnet, transformer, telecommunications, and information… …   Universalium