Geochemistry of rocks, sediments, soils, and concentrates from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of earth materials in the continental US and Alaska.
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ngdbrock.kmz (Rock geochemistry 1.5 Mbytes)
ngdbsed.kmz (Sediment geochemistry 8.4 Mbytes)
ngdbsoil.kmz (Soil geochemistry 2.4 Mbytes)
ngdbconc.kmz (Concentrate geochemistry 3.4 Mbytes)
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