The application of trace element data to problems in petrology

Bioavailability of Some Heavy Metals in Selected Dumpsites in Ozoro, South-South, Nigeria

“…Adsorption has been noted as the important control of Copper in soils (Jenne, 1968;Hickey and Kittrick, 1984). The high surface area and adsorbing capacity of Fe-Mn oxide, coupled with the ability of Cu 2+ to replace Fe 2+ in some Fe-oxides (Taylor, 1965) may be responsible for such adsorption.…”

Natural Abundances and Mineralogical Partitioning of Trace Elements in Selected Alberta Soils

“…6[tz 76t-771 (November 19m) abundance of the element in most uncontaminated soils is near orbelow the detection limit of conventional atomic absorption spectroscopic methods of analysis (McKeague et al 1979 Pawluk (l,967 $Values for shale, granite and crust from Krauskopf(1967). values for limcstone from Taylor (1965) (Mills and Zwarich 1975) is considerably higher than the 0.3 ppm Cd found for the soils of this study. Since the crustal abundance of cadmium is 0.2 ppm (Table 1) and all common rocks contain less than 0.4 ppm Cd (Taylor 1965) with the relative distribution of zinc where and biotite (92ppmCo) (Dudas et al 1973 …”

“…values for limcstone from Taylor (1965) (Mills and Zwarich 1975) is considerably higher than the 0.3 ppm Cd found for the soils of this study. Since the crustal abundance of cadmium is 0.2 ppm (Table 1) and all common rocks contain less than 0.4 ppm Cd (Taylor 1965) with the relative distribution of zinc where and biotite (92ppmCo) (Dudas et al 1973 …”

Characterization of a Post Orogenic A-Type Granite, Gabal El Atawi, Central Eastern Desert, Egypt: Geochemical and Radioactive Perspectives

“…In the studied granites, the K/Rb ratios are ranging from <340 to >82. On the K-Rb binary diagram (Figure 9(b)), the studied granite samples plot around the crustal line (K/Rb = 250) suggested by [59] and away from the mantle line (K/Rb = 1,000) given by [62]. This reflects their high K content and suggests their derivation from lower crust materials rather than upper mantle source.…”

“…The chondritic K/Rb ratio is 242 [58], the average of magmatic rocks is given as 230, with most of the crustal rocks ranging from 150 to 350 [59]. With increasing degree of differentiation, Rb fractionates preferentially into the residual melt and the K/Rb ratios decrease in highly evolved magmatic systems below 50.…”