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# Acknowledgments  This work was supported by [NSF Grant 0950477](http://www.nsf.gov/awardsearch/showAward?AWD_ID=0950477). The EarthChem system was developed by a long list of developers and data managers over the past 15 years, whose cumulative contributions made this manuscript possible. The lead principal investigator for this project is Kerstin Lehnert. This is a draft