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When a piece of paper made the country rich! The shoe box mentioned in the letter opened many secrets
Samira Vishwas | July 20, 2025 2:24 PM CST

History sometimes surprises people. When the doors of hidden mysteries open in front of people, it is very difficult to believe them. One such anecdote came out from the Bavaria state of Germany, when the process of digitization of government documents was going on in 2023. A letter was received about 75 years old during this process. The letter was 1950. A shoe box was mentioned in this letter. The box written in this letter was kept in bright yellow pieces, but these pieces were not common. These pieces also surprised scientists.

Actually, this letter had delivered scientists to a very rare mineral called “Humbolten”. This mineral is so rare that it is found only in 30 places in the world. Now you can understand why the importance of this box has become so much.

Know what is humboltine?

Actually, Humbolten found in the box is an organic mineral. In this mineral, elements such as carbon, hydrogen and oxygen are tied in crystal structure with metals. If you look at the chemical composition of this mineral, it shows a combination of iron and oxalate, due to which it becomes a yellow, soft razine -like glowing mineral. This mineral is made in extremely rare conditions. Indeed, when a rock containing iron contacts acetic environment in moist conditions, it is formed. Therefore it is also called miraculous minerals.

Why is the scientist so surprised?

Actually, scientists of Bavaria State Office for the Environment discovered it. In this discovery, he found that something is kept in yellow pieces in a compartment. When they were examined, scientists found that it is humboltine. This letter and this box increased the stock of rare minerals of Germany manifold in one stroke. The pieces of humboltine found were as big as hazelnuts. However, so far it has not been solved how it was made from the layers of mineral filled coal. These pieces are not attracting geography, but also the world of technology. Their electron shutting capacity is so high that they can be best suited for the future for green technology, high capacity lithium ion battery cathode.


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