The atomic explosion in Hiroshima took place in 1945 and more than 80 years later, researchers identified a previously unknown, silicon-rich metal alloy with a unique crystal structure amidst the ruins. According to a section of scientists, it is virtually impossible to produce that metal in a laboratory. They believe that a new insight has been gained regarding the reactions that can occur as a result of a nuclear explosion.

Luca Bindi, a Geologist at the University of Florence, discovered the previously unknown metal alloy hidden inside tiny glass-like beads, called hiroshimaites. Science Advances published Bindi’s study paper on July 29, 2026.

The US dropped the Little Boy atomic bomb on Hiroshima from the B-29 bomber Enola Gay at 8:15am on August 6, 1945. The explosive yield of the atomic bomb is commonly cited in historical accounts as roughly equivalent to 15,000-20,000 tonnes (15-20 kilotonnes) of TNT. Research into the impact of that nuclear explosion is still ongoing. While doing so, scientists collected and examined 34 samples from Hiroshima Bay. Examinations, using X-rays and microscopes, revealed that most of the samples contained an iron-chromium alloy. However, the molecules of a certain substance contained a remarkable mixture of iron, chromium, nickel, molybdenum, manganese, silicon and aluminium. The extremely ordered crystal structure of the alloy has left scientists amazed.

The core fireball’s surface temperature during the Hiroshima explosion actually reached approximately 14,000 degrees Fahrenheit (7,700 degrees Celsius), while ground temperatures at the hypocentre reached about 5,400-7,200 degrees Fahrenheit (3,000-4,000 degrees Celsius). At that time, everything – from glass, metal, water and soil to houses – turned into vapour. The metal vapour cooled down again in an instant, resulting in the creation of this alloy in which the atoms are arranged in a peculiar manner.

Typically, when a metal cools, its atoms arrange themselves into a common or familiar structure. However, the rapid cooling of mixed metallic vapour in the Hiroshima nuclear blast’s fireball trapped atoms into a new ordered crystal structure, forming the previously unknown multicomponent alloy found within tiny glassy fallout particles. Scientists believe that such a situation could arise if a comet crashes or lightning strikes.

Trinitite, a glass-like object, was created when the extreme heat of the July 16, 1945 Trinity nuclear test melted desert sand, copper cables and steel. It was primarily bottle-green, slightly radioactive and contains rare microscopic structures, like quasicrystals. There was a rare type of crystal (clathrate crystals and quasicrystals) in trinitite. However, the alloy formed as a result of the Hiroshima explosion does not contain quasicrystals.

Following this research, scientists believe that entirely new materials can be formed under extreme conditions and it could be the result of human actions. This research is expected to be useful in developing high-heat-resistant materials for future use in spacecraft or heavy industry.

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Published by Koushik Das

Koushik Das (born on May 16, 1976 in Kolkata) is a career journalist. Based in the Indian capital of New Delhi, Koushik writes mainly about foreign policies and current geopolitical issues, and rarely about other topics. His own political ideas are highly influenced by Antonio Gramsci, Louis Althusser, Michel Foucault, Michael Oakeshott and others. English philosopher and political theorist Oakeshott (Dec 11, 1901-Dec 19, 1990) says that “in political activity, men sail a boundless and bottomless sea. There is neither harbour for shelter nor floor for anchorage, neither starting-place, nor appointed destination. But we have to keep afloat”. (Rationalism in Politics, 1962) As a student of Political Science, Koushik loves to share his views on issues, which have great impacts on his thought process (and also on India, South Asia and of course on the global community), with his readers through his website – Boundless Ocean of Politics. By doing so, he tries to keep himself afloat. You will find some of his articles in https://inserbia.info/today/ (https://inserbia.info/today/author/kou_das13_i/), as he has been trying to assess the global geopolitics since 2003. You can also mail him at kousdas@gmail.com View all posts by Koushik Das