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Lunar Minerals

The lunar rocks described in the next chapter are unique to the Moon. Their special characteristics— especially the complete lack of water, the common presence of metallic iron, and the ratios of certain trace chemical elements—make it easy to distinguish them from terrestrial rocks. However, the minerals that make up lunar rocks are (with a few notable exceptions) minerals that are also found ...

Minerals in Volcanic Ash 1: Primary Minerals and Volcanic Glass

Volcanic ash is fragments of magma, and consists of minerals and volcanic glass. These materials in the ash can provide important information on the nature of the magma, because chemical compositions of magma usually show distinct features in each volcano, and because assemblages and compositions of minerals reflect their host melt. Using assemblages and chemical compositions of minerals and gl...

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Cheated Minerals in Animal Nutrition

Chelating is the chemical process by which a mineral (iron, cobalt, copper, zinc, and manganese) is combined with a mixture of amino acids and peptides. The resulting substances are known as chelates. Another descriptive term, proteinates, refers to the amino acid bond. These chelated minerals are thought to be more digestible than nonchelated forms. In other words, chelation makes the minerals...

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Anyone who is inclined to think that the " Reading Wars " are over, or that the main warriors in these wars are only professional educators and researchers who support either whole language or phonics approaches to reading will continuously rethink their views during the reading of Reading across International Boundaries: History, Policy, and Politics. Openshaw and Soler have compiled a collect...