编辑“︁铁”︁（章节）

====陨铁====
[[File:Meteorite iron harpoon.jpg|thumb|图为来自[[格陵兰]]的铁鱼叉，它的铁源自已知最大的陨石之一[[约克角陨石]]]]
在[[格尔津文化|格尔津]]发现了可追溯到公元前3500年，由[[陨铁]]做成的珠子。{{sfn|Weeks|1968|p=31}}这些珠子含镍7.5%，而地壳中的铁的镍杂质很少，表示它们是用陨石制造的。

当时人们认为陨铁来自天界，所以它们备受推崇，常被用来锻造武器和工具。{{sfn|Weeks|1968|p=31}}举个例子，在[[图坦卡蒙]]的陵墓中有一把由陨铁打造的{{le|图坦卡蒙的铁匕首|Tutankhamun's iron dagger blade|匕首}}，其铁、钴和镍的比例与当地陨石相似。<ref name="Bjorkman 1973">{{cite journal|last=Bjorkman|first=Judith Kingston|title=Meteors and Meteorites in the ancient Near East |journal=Meteoritics |date=1973 |pages=91–132 |doi=10.1111/j.1945-5100.1973.tb00146.x |volume=8|issue=2|bibcode=1973Metic...8...91B}}</ref><ref name="Comelli">{{cite journal|doi=10.1111/maps.12664 |bibcode=2016M&PS...51.1301C|title=The meteoritic origin of Tutankhamun's iron dagger blade|journal=Meteoritics & Planetary Science|volume=51|issue=7|pages=1301–09|year=2016|last1=Comelli|first1=Daniela|last2=d'Orazio|first2=Massimo|last3=Folco|first3=Luigi|last4=El-Halwagy|first4=Mahmud|last5=Frizzi|first5=Tommaso|last6=Alberti|first6=Roberto|last7=Capogrosso|first7=Valentina|last8=Elnaggar|first8=Abdelrazek|last9=Hassan|first9=Hala|last10=Nevin|first10=Austin|last11=Porcelli|first11=Franco|last12=Rashed|first12=Mohamed G|last13=Valentini|first13=Gianluca|doi-access=free}}</ref><ref name="walshx">{{cite news | last=Walsh | first=Declan | title=King Tut's Dagger Made of 'Iron From the Sky,' Researchers Say | newspaper=[[The New York Times]] | quote=the blade's composition of iron, nickel and cobalt was an approximate match for a meteorite that landed in northern Egypt. The result "strongly suggests an extraterrestrial origin" | date=2 June 2016 | url=https://www.nytimes.com/2016/06/03/world/middleeast/king-tuts-dagger-made-of-iron-from-the-sky-researchers-say.html |archive-url=https://ghostarchive.org/archive/20220103/https://www.nytimes.com/2016/06/03/world/middleeast/king-tuts-dagger-made-of-iron-from-the-sky-researchers-say.html |archive-date=2022-01-03 |url-access=subscription |url-status=live | access-date=4 June 2016}}{{cbignore}}</ref>埃及人使用的铁制品可追溯到公元前3000年至公元前2500年。{{sfn|Weeks|1968|p=29}}

由于其中的[[镍]]，陨铁较软、韧性较高、容易[[锻造]]，但在高温下容易变脆。<ref>{{Cite book|url={{Google books|-CQ4AQAAIAAJ|page=PA492|keywords=|text=|plainurl=yes}}|title=Technisches wörterbuch oder Handbuch der Gewerbskunde&nbsp;... : Bearb. nach Dr. Andrew Ure's Dictionary of arts, manufactures and mines|last=Ure|first=Andrew|date=1843|publisher=G. Haase|page=492|language=de}}</ref>