"God's Iron" Moved the Empire: The Unknown Relationship Between Meteoritic Iron and Assyria

When you hear the term "Iron Age," what kind of scene comes to mind?
Perhaps an image of a sweat-drenched craftsman in front of a furnace, hammering red-hot iron. That is indeed the story of the "Iron Age." But before that, there was a more mysterious era.
It is the story of an era when people believed that iron was not something dug from the ground, but something that fell from the sky.

The "Lumps of Pure Iron" That Fell from Space

Countless small celestial bodies made of rock and metal drift through outer space. Those that fly into Earth are called meteorites. There are various types of meteorites, but those composed mainly of iron and nickel are specifically called "meteoritic iron" [Note 3].
What is amazing about this meteoritic iron is that it falls to Earth as "pre-refined pure iron" from the start.
Iron on Earth is trapped within rocks as iron oxide and cannot be used as is. However, meteoritic iron falls as a lump of metal, an alloy with nickel. Moreover, it has high purity and is relatively easy to process even without high-temperature treatment. It stretches when hammered. It shines when polished.
The moment ancient humans first touched "iron" must not have been at a mine or in front of a furnace, but the moment they picked up a black, gleaming stone lying in some grassy field. This is said to have happened over 5,000 years ago [Ref 1].
Incidentally, inside meteoritic iron, there is a beautiful geometric pattern called the "Widmanstätten structure" [Note 4]. This is formed by extremely slow cooling—a process where the temperature drops only once every million years in outer space [Ref 1]—and it can never be reproduced on Earth. This pattern, which appears when meteoritic iron is cut and polished, is truly a product of time and space.

Tutankhamun's Dagger Was "Made in Space"

In 2017, archaeologist Albert Jambon of the French National Centre for Scientific Research (CNRS) [Note 5] analyzed ancient iron artifacts from various locations using a portable spectrometer [Note 6] [Ref 2]. This device, which can examine components without damaging the object, revealed the true nature of Bronze Age iron artifacts one after another.
The most famous is the iron dagger unearthed from the tomb of Tutankhamun [Note 7].
Tutankhamun died around 1324 BC. It was the height of the Bronze Age, and iron smelting technology did not yet exist. Yet, there was an iron dagger among the burial goods. Jambon's analysis solved this mystery that had puzzled people.
High concentrations of nickel were detected in the dagger. This does not match refined iron, but rather the composition of meteoritic iron [Ref 2]. That dagger was made by processing a lump of iron that had fallen from space.
Furthermore, the analysis revealed that the iron artifacts in Tutankhamun's tomb were made from three different types of meteoritic iron [Ref 2]. At the time, meteoritic iron was considered more valuable than gold. Collecting three types shows that he had that much power and wealth. Jambon stated, "I think people at the time were desperate to find meteorites" [Ref 2], and it is said that they were as valuable as modern diamonds [Ref 2].
In ancient Egyptian hieroglyphs [Note 8], the character for iron contained the meaning of "that which came from the sky" [Ref 2]. They had intuited the relationship between iron and space for over 3,000 years.

The Hittites Monopolized the "Secret of Iron"

Let's shift the stage of the story a little.
From 2000 BC onwards, the Hittites held power in the Anatolian region [Note 9], which corresponds to present-day northwestern Turkey. They inherited the ironware culture using meteoritic iron and reduced iron from the indigenous Hatti and Kanesh people [Note 10], and by monopolizing it, they built a massive empire [Ref 1].
Iron swords are harder, sharper, and less likely to break than bronze swords. Iron farm tools can plow even rough land well. Countries with iron technology had an overwhelming advantage in both military and agriculture. The reason the Hittites kept their iron manufacturing methods a secret was that it was their national lifeline.
However, around the 12th to 11th centuries BC, the Hittites declined. There are various theories, such as the invasion of a mysterious people called the "Sea Peoples" [Note 11], but the cause is not certain. What is important is that this collapse caused iron technology to spread all at once [Ref 1]. Ironware culture spread to Egypt, Mesopotamia, Europe, India... and humanity entered the full-scale "Iron Age."

And Assyria Became the "Champion of Iron"

After the collapse of the Hittites, the Assyrian Empire utilized iron technology most skillfully.
Assyria was a nation that rose centered on present-day northern Iraq, and from the 9th to 7th centuries BC, it built the first "world empire" in history, reaching from Egypt to Iran [Note 12]. At the root of its military power were iron weapons and equipment.
The strength of the Assyrian army was renowned in the ancient world. Iron swords, iron spears, shields and armor studded with iron rivets. Advanced tactics combining cavalry and infantry. In addition, they were also adept at "siege tactics," which were revolutionary for the time. They would dig away city walls with iron tools and cause fortified cities to fall. Even when viewed by modern military historians, the Assyrian army is evaluated as an extremely rational and cruelly efficient combat group [Note 13].
The murals in the royal palace [Note 14] repeatedly depict scenes of lion hunting and war. It is a display of the overwhelming power of soldiers wielding iron weapons.
However, the relationship between Assyria and meteoritic iron goes beyond mere "material for weapons."

Meteoritic Iron Was "Proof of Divine Power"

In ancient Mesopotamia [Note 15], it was believed that the fall of a meteorite was a manifestation of the will of the gods. A fireball descends from the sky, and the ground shakes with a loud noise. When you go to that place, a lump of metal that came from the sky is rolling there. What else could this be but a "gift from the gods"?
In Assyrian documents, there remain records of kings documenting the fall of meteorites [Note 16]. It functioned not just as a record of a natural phenomenon, but as proof that the gods had bestowed power upon the king. The king's authority was supported not only by military force but also by a special relationship with the gods.
Weapons and ornaments made from meteoritic iron were in a different class from other iron products. Unlike Earth's iron, it was iron that came from space. It was believed to contain not just the pinnacle of technology, but the power of the gods themselves. For an Assyrian king, wearing a meteoritic iron dagger at his waist may have been like wearing divine protection.
This resonates with the fact that Tutankhamun had a meteoritic iron dagger as a burial good. That iron placed in the king's tomb must have been a "divine weapon" to protect the king even in the afterlife.

The Legend of "Sky Iron" That Reached Japan

The story jumps a bit, but there are also stories of meteoritic iron and swords in Japan.
In 1890 (Meiji 23), a meteorite fell in the former Shirahagi Village in Toyama Prefecture [Ref 1]. The then-Minister of Agriculture and Commerce, Enomoto Takeaki [Note 17], learned of this, purchased it, and commissioned the swordsmith Oka Yoshikimune [Note 18] to make a Japanese sword. The completed sword was named the "Meteor Sword" (Ryuseito), and one long sword was presented to the then-Crown Prince (later Emperor Taisho) [Ref 1]. Currently, one long sword and two short swords exist and are held by the Toyama Science Museum [Ref 1].
However, there are technical difficulties in making a sword from meteoritic iron alone. Because meteoritic iron does not contain carbon, it does not harden even if quenched [Note 19] as is, and it does not become a sharp blade [Ref 1]. Also, if the proportion of nickel contained in the meteoritic iron is high, forge welding [Note 20] becomes difficult [Ref 1]. The production report for the Meteor Sword states "Izumo Tamahagane: Meteoritic Iron = 3:7 (for the steel part), and the base metal is all meteoritic iron," but it is estimated that Japanese iron was actually mixed in as well [Ref 1].
The romance of "making a sword with iron that came from the sky" must have been something modern Japanese craftsmen could not resist.

The Perspective of "History Changed by Meteoritic Iron"

I want you to notice something after reading this far.
History textbooks explain the development of civilization in the flow of "beginning of agriculture -> birth of cities -> formation of states." But in reality, it is much more full of coincidences.
If iron had not fallen from the sky, ancient people might have spent the Bronze Age without knowing about "metallic pure iron." It was precisely because there was a "sample from space" called meteoritic iron that humanity was able to know that "iron is this kind of thing." That knowledge boosted the development of iron-making technology, gave rise to the prosperity of the Hittites, supported the Assyrian Empire, and redrew the map of world history.
A single stone that fell from space was involved in the rise and fall of empires over thousands of years.
Even today, the Gibeon meteoritic iron discovered in Namibia [Note 22] (Gibeon meteorite, discovered in 1836, total weight over 10 tons) and others are housed in museums, and research continues [Ref 1]. The geometric pattern of the Widmanstätten structure that appears when its cross-section is polished quietly tells the scale of cosmic time.

Conclusion

History is something made by humans. But humans live while being at the mercy of the universe.
The story of meteoritic iron gently teaches us that. A king brings a meteoritic iron dagger into his tomb, an empire defeats enemies with iron from space, and a swordsmith strikes a blade with a piece of a star. These are all stories of the simple awe and longing for the universe felt by humans who looked up at the sky.
Next time you look up at the night sky and see a shooting star, I want you to try thinking, "That might be iron." Because someone 5,000 years ago was looking at the same sky.

Terminology Notes

[Note 1] Reduction
A type of chemical reaction, the operation of removing oxygen from an oxide. In the case of iron ore (iron oxide), pure metallic iron is extracted by reacting it with carbon (coke or charcoal) at high temperatures. Modern blast furnace ironmaking also applies this principle.
[Note 2] Monopolization of ironmaking technology by the Hittites
The fact that the Hittites strictly managed the manufacturing method of iron is also indirectly suggested in diplomatic documents with Egypt at the time (Amarna letters). It has been confirmed that even when the Egyptian king requested the provision of iron, the Hittite king sent only a small amount.
[Note 3] Classification of meteoritic iron
Meteorites are broadly divided into "chondrites" (those that have not undergone melting and differentiation in the parent body) and "non-chondrites" (those that have undergone melting and differentiation). Among these, meteoritic iron belongs to non-chondrites, and is further classified into "stony-iron meteorites" (a mixture of metallic iron and silicate minerals) and "iron meteorites" (almost entirely iron-nickel alloy). Most iron meteorites contain 5-15% nickel by weight.
[Note 4] Widmanstätten structure
A band-like or lattice-like crystal pattern that appears when iron meteorites are polished and etched. It is a structure in which two types of minerals, kamacite (low-nickel iron) and taenite (high-nickel iron), are arranged alternately, formed by cooling extremely slowly (a few degrees per million years in outer space) from temperatures above 705°C. Because it is a structure that can never be reproduced in ironmaking on Earth, it functions as a "certificate" for meteoritic iron. It was discovered and named by the Austrian Count Alois von Beckh Widmanstätten in 1808.
[Note 5] CNRS (French National Centre for Scientific Research)
Abbreviation for Centre National de la Recherche Scientifique. A public research institution operated by the French government, covering a wide range of fields from natural sciences to humanities. It is one of the largest basic research institutions in Europe.
[Note 6] Portable spectrometer (X-ray fluorescence analyzer)
A device that can analyze the type and amount of elements non-destructively by utilizing the property that when X-rays are applied to a substance, unique "fluorescent X-rays" are returned for each element. It is effective for analyzing valuable items that cannot be damaged, such as museum exhibits. Jambon used this to analyze items held in museums around the world.
[Note 7] Tutankhamun (reigned: around 1332–1323 BC)
A pharaoh of the 18th Dynasty of ancient Egypt. A young king who is said to have ascended the throne around the age of 10 and died at the age of 18 or 19. The royal tomb excavated by Howard Carter in 1922 was discovered in an almost untouched state, and the burial goods, including the golden mask, attracted worldwide attention. The burial goods in the tomb included several iron artifacts, including an iron dagger placed on Tutankhamun's chest, and its meteoritic iron origin was confirmed in a 2016 study (Comelli et al.).
[Note 8] Hieroglyph
A writing system based on pictographs used in ancient Egypt. It began to be used around 3200 BC and was frequently used in religious and official settings. The hieroglyph for iron is also written as "bi3 n pt," which literally means "metal of heaven."
[Note 9] Anatolia
A peninsula-like region that occupies most of present-day Turkey. It is a geopolitical crossroads connecting West Asia and East Europe, and has been a crossroads of many civilizations since ancient times. Many nations, such as the Hittites, Phrygians, Lydians, and the Byzantine Empire, used this as their base.
[Note 10] Hatti and Kanesh people
Indigenous peoples who lived in Anatolia before the establishment of the Hittite Empire. The Hatti people had a cultural and religious influence on the Hittites, and traces can be seen in one of the Hittite main gods, the "Storm God of Hatti." The Kanesh people (also related to the Hurrians) were an ethnic group distributed from eastern Anatolia to northern Mesopotamia. These peoples are said to have possessed early ironware technology.
[Note 11] "Sea Peoples"
A general term for a mysterious confederation of peoples that swept through the eastern Mediterranean around the 12th century BC. They appear in Egyptian records and destroyed the Hittite Empire and the city-states of Canaan one after another. There are various theories about their origins (Aegean region, Anatolia, Balkan Peninsula, etc.), and no definitive answer has been reached yet. This turmoil is also called the "Bronze Age Collapse," and has been attracting attention again in recent years as a major event that shook the entire Mediterranean civilization.
[Note 12] Assyrian Empire
A nation built by Semitic-speaking peoples originating from the upper reaches of the Tigris River in present-day northern Iraq. Historically divided into "Old Assyria," "Middle Assyria," and "Neo-Assyria," the peak was the Neo-Assyrian period (911–609 BC). Kings such as Tiglath-Pileser III, Sargon II, Sennacherib, and Ashurbanipal maximized their territory, ruling a vast region from Egypt to Iran. It is also evaluated as having built the world's first organized imperial administrative system.
[Note 13] Tactics of the Assyrian army
The Assyrian army sophisticated its tactics with the spread of iron weapons after the 9th century BC. It has elements that lead to modern strategy, such as a division of labor system for infantry, cavalry, chariots, and engineers, stabilization of ruled areas through forced migration of prisoners and residents, and psychological coercion (carving records of cruel executions on murals). In particular, the technology of "siege warfare" was the world's highest level at the time, and the use of battering rams to collapse city walls is depicted on murals.
[Note 14] Murals of the Assyrian royal palace
A large number of limestone reliefs have been discovered from the ruins of royal palaces such as Nineveh (present-day suburbs of Mosul, Iraq), and are currently housed in museums around the world, including the British Museum. The lion hunting scenes (such as "The Dying Lion") are particularly famous and are evaluated as masterpieces of Assyrian art. These are not just works of art, but also have the character of "propaganda" to advertise the king's authority, relationship with the gods, and military victories.
[Note 15] Mesopotamia
Meaning "land between two rivers" in Greek, it refers to the region sandwiched between the Tigris and Euphrates rivers (the region centered on present-day Iraq). It is also called the "cradle of civilization," where the world's oldest civilizations such as Sumer, Akkad, Babylonia, and Assyria flourished one after another.
[Note 16] Assyrian meteorite records
In ancient Mesopotamia, records of celestial phenomena were actively conducted, and observations of comets, meteors, lunar eclipses, and solar eclipses remain in clay tablet documents. The fall of a meteorite was also valued as a "divine revelation," and astrologers had an obligation to report it to the king. Clay tablets discovered from the archives of the Assyrian royal palace (Library of Nineveh) also contain many documents recording celestial phenomena.
[Note 17] Enomoto Takeaki (1836–1908)
A politician, diplomat, and military officer who was active from the end of the Edo period to the Meiji period. He fought in the Boshin War as a shogunate retainer and resisted the new government army in the Battle of Hakodate (Battle of Goryokaku). Later, he was employed by the Meiji government and served as Minister to Russia, Minister of the Navy, Minister of Agriculture and Commerce, and Minister of Education. He had a deep knowledge of science and technology and is also known for proposing and promoting the production of the Meteor Sword.
[Note 18] Oka Yoshikimune
A swordsmith of the Meiji period. The person who produced the Meteor Sword from Shirahagi meteoritic iron at the request of Enomoto Takeaki. He left a detailed report on the production process of the Meteor Sword, which is still referred to today as a primary source on the technical difficulties of blacksmithing using meteoritic iron.
[Note 19] Quenching
A process of quickly cooling iron heated to a high temperature by immersing it in water or oil when making swords or tools. This treatment creates an internal structure (martensite) in the iron, significantly increasing its hardness. Because the effect of quenching does not appear unless carbon is included, the hardness of a blade cannot be obtained with pure meteoritic iron alone.
[Note 20] Forge welding
A technique of overlapping iron while heated to a high temperature (around 900 degrees) and joining it by hammering. In the production of Japanese swords, impurities are removed by folding and forge welding Tamahagane many times to obtain homogeneous and tough steel. If the proportion of nickel contained in meteoritic iron is high, the difference in melting point between iron and nickel becomes large, making this joining difficult.
[Note 21] Tamahagane
Steel made by "Tatara ironmaking," a traditional Japanese ironmaking method. It is obtained by reducing iron sand with charcoal, and the hard part with high carbon content (the boundary part with iron slag) is called "Tamahagane." It is still produced today at the Nittoho Tatara in Shimane Prefecture as a material for Japanese swords.
[Note 22] Namibia
A country in southwestern Africa. Independent from South Africa in 1990. The Gibeon meteorite, discovered in 1836, is a group of iron meteorites widely distributed near Gibeon in southern Namibia today, with a total recovered weight of over 10 tons, making it one of the largest meteoritic iron groups in the world. The Widmanstätten structure is beautifully developed, and it is also used as a material for jewelry and crafts.

References

[Ref 1] Swordsmith/Iron Workshop Furai Kobo (frkw.com)
"The Story of Meteoritic Iron, Thought to be the First Iron Encountered by Humanity"
URL: https://www.frkw.com/index065.html
(Referenced for classification of meteoritic iron, Widmanstätten patterns, Hittite iron culture, the production process of meteor swords, technical details, and descriptions of the Gibeon meteorite)
[Ref 2] GIGAZINE
"Data Confirms Ancient People Produced Iron Tools from Meteorites" (December 27, 2017)
URL: https://gigazine.net/news/20171227-iron-from-space/
(Referenced for Albert Jambon's research, analysis using portable spectrometers, the meteoritic origin of Tutankhamun's dagger, the use of three types of meteoritic iron, iron notation in hieroglyphs, and comparisons of value with diamonds)
* Descriptions regarding the Assyrian Empire's military strategy, royal palace wall reliefs, and meteorite records do not have direct sources in the secondary materials above and refer to the following general academic knowledge.
• A. T. Olmstead, History of Assyria (1923)
• Juro Yamada, "Assyria" (Yamakawa Shuppansha, 2018)
• British Museum official website, "Assyrian lion hunt reliefs"