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Iron is a chemical element; ... [107] [108] The earliest cast iron artifacts were discovered by archaeologists in what is now modern Luhe County, Jiangsu in China.
By this time, Chinese metallurgists had discovered how to fine molten pig iron, stirring it in the open air until it lost its carbon and could be hammered (wrought). In modern Mandarin-Chinese, this process is now called chao, literally stir frying. Pig iron is known as 'raw iron', while wrought iron is known as 'cooked iron'.
The geologic history of the formations containing iron are typical of banded iron formations worldwide. [2]: 502–504 Before the 19th century, Native American groups mined native copper on the Keweenaw Peninsula. [9] William Austin Burt discovered iron ore in the Marquette Range near Negaunee, Michigan in 1844. Iron ore was discovered on the ...
Perey discovered it as a decay product of 227 Ac. [177] Francium was the last element to be discovered in nature, rather than synthesized in the lab, although four of the "synthetic" elements that were discovered later (plutonium, neptunium, astatine, and promethium) were eventually found in trace amounts in nature as well. [178]
The earliest gold artifacts were discovered at the site of Wadi Qana in the Levant. [13] Silver is estimated to have been discovered in Asia Minor shortly after copper and gold. [14] There is evidence that iron was known from before 5000 BC. [15] The oldest known iron objects used by humans are some beads of meteoric iron, made in Egypt in ...
Inuit lance made from a narwhal tusk with an iron head made from the Cape York meteorite. Native ironwork in the Northwest Coast has been found in places like the Ozette Indian Village Archeological Site, where iron chisels and knives were discovered.
Lake Superior Iron Ranges. Iron ore was discovered on the Marquette Range in 1844, and mining started in 1848. Mining increased after the opening of the ship canal at Sault Ste. Marie provided cheap water transportation between the iron mines to the lower Great Lakes. The Lake Superior iron deposits were the largest ever discovered in the ...
Telluric iron, also called native iron, is iron that originated on Earth, and is found in a metallic form rather than as an ore. Telluric iron is extremely rare, with only one known major deposit in the world, located in Greenland .