photo sharing and upload picture albums photo forums search pictures popular photos photography help login
Dick Osseman | all galleries >> Ankara pictures >> Ankara Anatolian Civilizations Museum >> Early Bronze Age > Ankara 10062012_0682.jpg
previous | next
10-Jun-2012 Dick Osseman

Ankara 10062012_0682.jpg

Dagger with iron blade and golden hilt from Alaca Höyük. 28½ cm long.
Dated: Early Bronze Age (2300-2100 BC).
In 2022 I was informed by its author an article (Jambon 2017, JAS) stated that the blade was "undoubtedly made of meteoritic iron". On the Elsevier site I found the logic; "Bronze Age iron artifacts could be derived from either meteoritic (extraterrestrial) or smelted (terrestrial) iron. This unresolved question is the subject of a controversy: are some, all or none made of smelted iron? In the present paper we propose a geochemical approach, which permits us to differentiate terrestrial from extraterrestrial irons. Instead of evaluating the Ni abundance alone (or the Ni to Fe ratio) we consider the relationship between Fe, Co and Ni abundances and their ratios. The study of meteoritic irons, Bronze Age iron artifacts and ancient terrestrial irons permit us to validate this chemical approach. The major interest is that non-invasive p-XRF analyses provide reliable Fe:Co:Ni abundances, without the need to remove a sample; they can be performed in situ, in the museums where the artifacts are preserved. The few iron objects from the Bronze Age sensu stricto that could be analyzed are definitely made of meteoritic iron, suggesting that speculations about precocious smelting during the Bronze Age should be revised. In a Fe:Co:Ni array the trend exhibited by meteoritic irons departs unambiguously from modern irons and iron ores. The trend of Ni/Fe vs Ni/Co in different analysis points of a single object corroded to variable extents provides a robust criterion for identifying the presence of meteoritic iron. It opens the possibility of tracking when and where the first smelting operations happened, the threshold of a new era. It emphasizes the importance of analytical methods for properly studying the evolution of the use of metals and metal working technologies in our past cultures."
A Wikipedia article that formerly may have been different now states "Hittites did not use smelted iron, but rather meteorites".

Nikon D4
1/250s f/6.3 at 60.0mm iso2000 full exif

other sizes: small medium large original auto
comment | share