Average concentrations of elements in Black Hawk County, Iowa

    Counties page > Zn in Conterminous US > Zn in central US > Averages in Black Hawk County (Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)5.2630.4063.5206.185
ArsenicAs (ppm)6.9941.2433.23910.878
CalciumCa (wt%)1.0000.0870.7681.175
CopperCu (ppm)13.7402.5745.66020.255
IronFe (wt%)2.6460.4111.5083.980
MercuryHg (ppm)0.0320.0050.0180.047
MagnesiumMg (wt%)0.4900.0610.2610.591
ManganeseMn (ppm)610.621108.652358.298978.616
SodiumNa (wt%)0.7740.0380.6560.860
PhosphorusP (wt%)0.0700.0160.0380.126
LeadPb (ppm)17.2332.02211.11723.831
SeleniumSe (ppm)0.6270.1000.3350.848
TitaniumTi (wt%)0.2530.0340.1220.304
ZincZn (ppm)58.9148.03130.65676.639

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