Editing Perchlorate (section)

===Terrestrial abundance===
Perchlorate is created by lightning discharges in the presence of chloride. Perchlorate has been detected in rain and snow samples from [[Florida]] and [[Lubbock, Texas]].<ref>Kathleen Sellers, Katherine Weeks, William R. Alsop, Stephen R. Clough, Marilyn Hoyt, Barbara Pugh, Joseph Robb. ''Perchlorate: Environmental Problems and Solutions'', 2007, p 9. Taylor & Francis Group, LLC.</ref> It is also present in [[Martian soil]].

Naturally occurring perchlorate at its most abundant can be found commingled with deposits of sodium nitrate in the [[Atacama Desert]] of northern Chile. These deposits have been heavily mined as sources for nitrate-based fertilizers. Chilean nitrate is in fact estimated to be the source of around {{convert|81000|tonne}} of perchlorate imported to the U.S. (1909–1997). Results from surveys of ground water, ice, and relatively unperturbed deserts have been used to estimate a {{convert|100000|to|3000000|tonne}} "global inventory" of natural perchlorate presently on Earth.<ref>
{{cite book
| first1=Jennifer L. 
| last1= DuBois 
| first2= Sunil
| last2= Ojha
| editor=Peter M.H. Kroneck and Martha E. Sosa Torres
| title=Sustaining Life on Planet Earth: Metalloenzymes Mastering Dioxygen and Other Chewy Gases
| series=Metal Ions in Life Sciences
| volume=15
| pages= 45–87 
| year=2015
| publisher=Springer
| chapter=Chapter 3, Section 2.2 ''Natural Abundance of Perchlorate on Earth''
| doi=10.1007/978-3-319-12415-5_3
| pmid= 25707466 
| pmc= 5012666 
| isbn= 978-3-319-12414-8 
}}
</ref>