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Confusing the Issue |
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In what follows I present a few finds that caused some confusion of the issue
"history of metals", at least as far as I'm concerned. This link
gets you to a module where the particular kind of confusion that museums like to impart is discussed in some detail. |
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The good news are here! |
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"The site (Çayönü)
provided the archaeological world with several 'first's' including animal husbandry, woven cloth, smelted
copper, ..." |
Well - no! It was native copper. |
"Metallurgy: Çayönü is believed to
have been the main bead producing centre during the early-Neolithic period. Archaeologists
discovered four early copper items at Çayönü, dated at 7,200 BC - two
pins, one bent fish-hook and a reamer or awl - showing that its inhabitants were already proficient at this time. Çayönü
is the location of the earliest known hammered copper objects, (craftsmen produced oval-shaped
copper beads) and smelted copper and bronze objects
for at least 7,000 years." |
Hammered copper objects is fine! Extrapolating from 4 tiny copper objects
to smelting copper and bronze is not! Actually
more than 100 Cu items have been found. Nevertheless, it was not a center - the Cu was rather an anomaly |
Source: Ancient-wisdom: "Exploring The Frontiers of Prehistory Internet site" (generally a good site!) |
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Gold can be consolidated far
easier and at low temperatures! |
Source: D. Killick and T. Fern: Archeometallurg: "The Study of Preindustrial Mining and Metallurgy"; Annu.
Rev: Anthropol. 41 (2012) p. 559 - 575. Otherwise a very informative review about archeometallurgy. |
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Çatal Höyük
"Between 1961 and 1965 the British archeologist James Mellaart dug out an
area in the south-west of the mound. He unearthed the remains of 160 settlements. In 1965 his digging was terminated because
the Turkish authorities revoked his license based on his purported involvement into the Dorak affair. Some preliminary reports
and a kind of popular-science book exist about his findings. An exhaustive publication about his findings and results has
not yet been issued. " |
This is not uncommon in archeological circles. Writing an exhaustive report
is not only time-consuming and boring, worse, it gives your opponents material to attack your with. It's far easier
to promote your specific point of view if only you have access to all data. James Mellaart, by the way, did have a peculiar
and controversial point of view about how archeology should be conducted. I'm not saying that his point of view was right
or wrong - I don't know - but that he viewed Çatal Höyük as an opportunity to prove it. This is dangerous.
As the saying goes: "if your only tool is a hammer, you tend to see every problem as a nail". This kind of
(unscientific) behavior did produce some confusion about Çatal Höyük
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Source: German version of the Çatal Höyük Wikipedia article; translated by me |
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Varna
The excavations of what became known as the Varna I cemetery continued into the 1990s but a full
publication of the site and its archaeological finds is still awaited. |
See above. It is rather difficult to find anything about the making
of the Varna gold and copper objects |
Source: John Chapman, Tom Higham, Vladimir Slavchev, Bisserka Gaydarska and Noah Honch: The Social Context of the
Emergence, Development and Abandonment of the Varna Cemetery, Bulgaria European Journal of Archaeology 2006 9: 159
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Source: Tamara Stech I'm sure that Tamara Stech
is right. She also suspected that those "lead" beads from Çatal Höyük could not possibly be lead
- see above - before that was proved. |
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" Çatal Höyük is important
in terms of the history of metal because the site has yielded copper and lead artifacts
dated about 6000 BC. The copper had apparently been hammered into little plates and used to decorate the edge of a piece
of cloth, and the lead had been made into 13 beads strung on a necklace." |
No, it hasn't yielded lead artifacts! |
"Çatal Höyük" in the English
2013 Wikipedia page! The German one got it right (of course) |
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Lead in the form of galena? How about sulfur in
the form of galena? Or iron in the form of pyrite? |
Source: K. L. Ehrhardt: "Copper working technologies..." J World Prehist. 22 (2009!!!)
p. 213 |
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A long and learned treatise, much of it about Asikli Höyük. That's
where one would expect to learn all about the amazing obsidian bracelet
found there, right? Nope. It is not mentioned at all. |
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"Melting before smelting" - witness cast
mace head from Can Hasan |
That mace head was hammered into shape! |
Source: Forgot |
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To melt
copper out the rock it is necessary to keep a fire at least 1981°F (1083°C). This was most likely done in
ancient Copper Age sites by continuously blowing a fire through tubes made from wood, bamboo or reeds |
You do not melt copper out the rock, you smelt
it, i.e. reduce copper oxide or whatever. Just being very hot won't do the trick!
You certainly do not add arsenic to a proper mixture of copper - tin!
I realize that it is hard to compress complex stuff into short texts but this site is supposed to give facts
and details. |
Scientists believe, the heat required to melt copper and tin
into bronze was created by fires in enclosed ovens outfitted with tubes that men blew into to stoke the fire. Before the
metals were placed in the fire, they were crushed with stone pestles and then mixed with arsenic
to lower the melting temperature. Bronze weapons were fashioned by pouring the molten mixture (approximately three parts
copper and one part tin) into stone molds. |
Source: COPPER AGE, BRONZE AGE AND IRON AGE - Facts and Details
http://factsanddetails.com/ |
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Die erste Verhüttung von Kupfererz fand vermutlich zufällig
statt. Man nimmt an, daß gelegentlich Erzstücke in Töpferöfen gerieten, die seit etwa 7000 v. Chr.
bekannt sind. Bald darauf wurde bergmännisch abgebautes Kupferz bei Temperaturen von mehr als 1080 Grad Celsius geschmolzen
und mit tönernen Gußtiegeln aus dem Schmelzofen geholt. (... mined ore was molten
at temperatures above 1080 0C and taken out of the melting furnace in ceramic pouring
vessels) | See above |
Source: Science author Ernst Probst: "Rekorde der Urmenschen" (Records of Prehistoric men) |
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© H. Föll (Iron, Steel and Swords script)