Average concentrations of elements in Howard County, Arkansas

    Counties page > Na in Conterminous US > Na in south-central US > Averages in Howard County (Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)2.4250.6691.1544.958
ArsenicAs (ppm)4.4031.5711.57810.873
CalciumCa (wt%)0.4941.3870.03510.665
CopperCu (ppm)9.0583.5473.41324.260
IronFe (wt%)1.5650.6890.5974.941
MercuryHg (ppm)0.0580.0950.0100.935
MagnesiumMg (wt%)0.1590.0660.0760.510
ManganeseMn (ppm)398.535186.16696.2761351.550
SodiumNa (wt%)0.1360.0800.0290.363
PhosphorusP (wt%)0.0280.0150.0080.101
LeadPb (ppm)13.2746.2403.75549.675
SeleniumSe (ppm)0.3430.1310.1010.794
TitaniumTi (wt%)0.3440.1800.1101.056
ZincZn (ppm)33.21112.81211.53293.955

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