alkaline earth

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alkaline earth

Any of the oxides of the alkaline earth metals calcium, strontium, magnesium, and barium.
References in periodicals archive ?
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.
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.