Average concentrations of elements in Roberts County, Texas

    Counties page > Fe in Conterminous US > Fe in central US > Averages in Roberts County (Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)3.9060.5303.0085.220
ArsenicAs (ppm)3.3740.7951.8905.200
CalciumCa (wt%)4.1481.8780.9438.781
CopperCu (ppm)7.7602.1115.09013.000
IronFe (wt%)1.5520.3610.9512.750
MercuryHg (ppm)0.0100.0000.0100.010
MagnesiumMg (wt%)0.4520.1490.2400.836
ManganeseMn (ppm)285.25493.542158.833750.000
SodiumNa (wt%)0.6140.0800.4870.799
PhosphorusP (wt%)0.0290.0100.0150.050
LeadPb (ppm)16.5761.79013.02621.381
SeleniumSe (ppm)0.1290.0280.1000.200
TitaniumTi (wt%)0.2090.0500.1400.465
ZincZn (ppm)32.6188.59320.19954.000

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