USGS - science for a changing world

Mineral Resources On-Line Spatial Data

    Counties page > Al in Conterminous US > Al in central US > Averages in Grundy County

Average concentrations of elements in Grundy County, Iowa

(Calculated from cells in the geochemical grid plotting in this area.)
Element Symbol Mean Std. dev. Minimum Maximum
AluminumAl (wt%)5.4290.1795.0045.832
ArsenicAs (ppm)8.4211.0146.05510.984
CalciumCa (wt%)1.1130.1620.8801.518
CopperCu (ppm)16.2041.48112.41020.276
IronFe (wt%)2.4360.1331.9672.708
MercuryHg (ppm)0.0650.0370.0250.209
MagnesiumMg (wt%)0.6160.0610.4400.756
ManganeseMn (ppm)746.11357.730546.510882.298
SodiumNa (wt%)0.7610.0370.7150.887
PhosphorusP (wt%)0.0700.0090.0530.099
LeadPb (ppm)17.9101.34615.09722.657
SeleniumSe (ppm)0.5830.0720.4310.791
TitaniumTi (wt%)0.2770.0050.2600.287
ZincZn (ppm)66.6014.98546.67575.930

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