USGS - science for a changing world

Mineral Resources On-Line Spatial Data

    Counties page > Al in Conterminous US > Al in central US > Averages in O'Brien County

Average concentrations of elements in O'Brien County, Iowa

(Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)6.0320.1435.6816.567
ArsenicAs (ppm)10.7130.6208.92712.252
CalciumCa (wt%)0.7160.0600.6140.967
CopperCu (ppm)19.9510.63918.11122.114
IronFe (wt%)2.8680.1092.6763.190
MercuryHg (ppm)0.0460.0160.0350.117
MagnesiumMg (wt%)0.6580.0320.5990.750
ManganeseMn (ppm)795.66660.235682.5601000.510
SodiumNa (wt%)0.7510.0230.6980.835
PhosphorusP (wt%)0.0850.0070.0530.096
LeadPb (ppm)18.0401.06716.02121.476
SeleniumSe (ppm)0.6160.0950.3030.779
TitaniumTi (wt%)0.2930.0100.2760.333
ZincZn (ppm)80.5451.78074.63783.809

Click here to download point data

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information:
Page Last modified: 14:22 on 20-Dec-2016