Editing Boron group (section)

===Boron===

Boron, with its atomic number of 5, is a very light element. Almost never found free in nature, it is very low in abundance, composing only 0.001% (10 ppm)<ref name="google979">{{cite book|title = Chemistry and chemical reactivity |author1=Kotz, John C. |author2=Treichel, Paul |author3=Townsend, John Raymond  |name-list-style=amp|publisher = Thomson Books| year = 2009 |location = Belmont, Ca, USA|isbn = 978-0-495-38712-1|volume= 2 | page=979|url=https://books.google.com/books?id=jcn6sgt7RpoC&pg=PA979}}</ref> of the Earth's crust. It is known to occur in over a hundred different minerals and [[ores]], however: the main source is [[borax]], but it is also found in [[colemanite]], [[boracite]], [[kernite]], [[tusionite]], [[berborite]] and [[fluoborite]].<ref>Klein, Cornelis and Hurlbut, Cornelius Jr. (1985) ''Manual of Mineralogy'', Wiley, 20th ed., pp. 343–347, {{ISBN|0-471-80580-7}}</ref> Major world miners and extractors of boron include [[Turkey]], the [[United States]], [[Argentina]], [[China]], [[Bolivia]] and [[Peru]]. Turkey is by far the most prominent of these, accounting for around 70% of all boron extraction in the world. The United States is second, most of its yield coming from the state of [[California]].<ref>{{Cite journal|journal = Mineral Processing and Extractive Metallurgy Review|volume = 9|issue = 1–4|year = 1992|pages = 245–254|doi = 10.1080/08827509208952709|title = Mining and Processing of Borates in Turkey|author1=Zbayolu, G. |author2=Poslu, K. |bibcode = 1992MPEMR...9..245O}}</ref>