• Chromite Wikipedia

    Chromite is an iron chromium oxide: FeCr 2 O 4. It is an oxide mineral belonging to the spinel group. Magnesium can substitute for iron in variable amounts as it ...

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  • Outline of mining Wikipedia

    The following outline is provided as an overview of and topical guide to mining: Mining – extraction of valuable minerals or other geological materials from the ...

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  • Hospitals in California United States

    Lists of hospitals in each United States, state and district: A: Alabama, Alaska, Arizona, arkansas C: California, Colorado, Connecticut

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  • Sources of Heavy Metals and Metalloids in …

    Heavy metals and metalloids in soils are derived from the soil parent material (lithogenic source) and various anthropogenic sources, most of which involve several ...

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  • Journal of weekly news and commentaries …

    Collection of weekly news and commentaries from John Betts, lecturer, author, photographer, mineral collector, and mineral dealer. Practical everyday advice for ...

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