geochemically

Metals that are considered geochemically abundant occur at crustal abundances of 0.1 percent or more (e.g. iron, aluminum, manganese, magnesium, titanium).

AP Environmental Science Chapter 10- Minerals 2008

Metals that are considered geochemically scarce occur at crustal abundances of less than 0.1 percent (e.g. nickel, copper, zinc, platinum metals).

AP Environmental Science Chapter 10- Minerals 2008

As different clay types derive from different lithologies via various weathering processes, radiogenic isotopes may also help in these studies not only to track point sources of clays, but also to quantify geochemically the proportions of mixed clays from different sources in the ceramics which may be difficult using other methods.

Interactive Dig Sagalassos - Isotope Archaeology Survey Report 1 2003

The samples will be analyzed petrographically and geochemically (stable isotopes) to evaluate this area as a possible source area for the stones used at Sagalassos.

Interactive Dig Sagalassos - Survey Report 16: Geological 2003

These sample will be analyzed mineralogically (petrography, X-ray diffraction) and geochemically (Inductively Coupled Plasma-Mass Spectrometry, X-Ray Fluorescence) to identify and characterize the ore deposits and the metal production waste.

Interactive Dig Sagalassos 2003 - Metallurgical Studies Report 2 2003

Several possible locations of metal-working activities identified by the Slovenian team's geophysical survey (Surveys, Geophysical, July 18-22) will be geochemically investigated to determine their trace element content.

Interactive Dig Sagalassos - Metallurgical Studies 2003

Both slag and metal objects, sampled from distinct chronological contexts, will be characterized mineralogically and geochemically, to be able to relate differing properties to chronological (e.g. early Roman to early Byzantine) and functional (e.g. household instruments, architectural fittings, military objects and armor, etc.) categories.

Interactive Dig Sagalassos 2003 - Metallurgical Studies Report 1 2003

The calcite precipitates are geochemically analyzed to constrain the nature and origin of the fluids associated with the faulting events and their timing.

Interactive Dig Sagalassos 2003 - Seismological Studies Report 2 2003

The example of copper drives home the fact that, in general, the only way of accessing geochemically rare elements is by mining local concentrations of high-grade mineral ore.

The Case for Mars Robert Zubrin 1996

The example of copper drives home the fact that, in general, the only way of accessing geochemically rare elements is by mining local concentrations of high-grade mineral ore.

The Case for Mars Robert Zubrin 1996