alkaline earth

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alkaline earth

Any of the oxides of the alkaline earth metals calcium, strontium, magnesium, and barium.

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The concentrations of the alkaline earth elements Mg and Ca in the protolith are close to those in the chemical composition of the UCC.

In profile A, Si[O.sub.2], and [Al.sub.2][O.sub.3] are strongly and positively correlated (r = 1.0~0.800) with alkali elements but are strongly and negatively correlated with alkaline earth elements, density, and pH value.

Geochemical mass balance and elemental transport during the weathering of the black shale of shuijingtuo formation in Northeast Chongqing, China

Unlike alkaline earth elements apatites, in lead apatites ([Pb.sub.10][(Z[O.sub.4]).sub.6][(OH).sub.2]), stereochemically active lone electron pairs experience repulsive forces from [OH.sup.-] ions, located in the structural channels.

Synthesis, crystal structure refinement, and electrical conductivity of [Pb.sub.(8-x)][Na.sub.2][Sm.sub.x][(V[O.sub.4]).sub.6][O.sub.(x/2)]