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Victor Goldschmidt

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Victor Moritz Goldschmidt was a pioneering Norwegian-Jewish mineralogist. He is widely considered a founder of modern geochemistry and crystal chemistry. Geochemistry is the study of how chemical elements behave in the Earth. Crystal chemistry examines how atoms are arranged to form solid structures.

1915-Goldschmit-VM
1915-Goldschmit-VM

Goldschmidt’s work helped scientists understand the fundamental building blocks of our planet. His discoveries allowed researchers to predict how minerals form and how elements distribute themselves throughout the Earth's layers.

Early in his career, Goldschmidt studied a geological feature called the Oslo graben. This is a valley formed when blocks of land move downward along faults. In this region, hot magma intruded into older rock layers during the Permian period. This intrusion caused a process called contact metamorphism. This occurs when the heat from magma changes the surrounding rock without melting it entirely. This process creates a specific type of fine-grained rock known as hornfels.

Al2SiO5 phase diagram
Al2SiO5 phase diagram

Goldschmidt conducted a systematic study of these rocks to see how minerals reacted to heat.

Through his observations, Goldschmidt discovered that minerals do not appear together randomly. He noticed that certain minerals only form in specific associations. For example, the mineral andalusite can be found with cordierite, but it is never found with hypersthene. He used this data to develop a mineralogical phase rule. This rule is a specific application of the Gibbs' phase rule. The Gibbs' phase rule helps scientists calculate the degrees of freedom in a system. It relates the number of chemical components to the number of phases present.

Al2SiO5 phase diagram
Al2SiO5 phase diagram

Goldschmidt proved that the number of mineral phases cannot exceed the number of chemical components.

In the 1920s and 1930s, a new tool changed how scientists viewed matter. Researchers like Max von Laue and William L. Bragg showed that X-ray scattering could reveal crystal structures. Goldschmidt applied these X-ray methods to many common minerals at Oslo and Göttingen. By looking at how atoms were arranged, he formulated rules for grouping chemical elements. He published these important findings in a series titled *Geochemische Verteilungsgesetze der Elemente*. This work laid the foundation for how we classify elements based on their chemical behavior.

Life was difficult for Goldschmidt during the rise of the Nazi party. Although the University of Göttingen treated him well, he was unhappy with the treatment of non-Aryans. He resigned in 1935 and returned to Oslo, Norway. When Germany invaded Norway in 1940, his situation became much more dangerous. In October 1942, he was arrested by German occupying powers due to his Jewish heritage. He was sent to the Berg concentration camp and became seriously ill.

He was eventually released and then rearrested, nearly being deported to Auschwitz. He was only saved because colleagues convinced the police that his scientific expertise was essential.

After escaping to Sweden, Goldschmidt was moved to England by a British intelligence unit in 1943. He worked at the Macaulay Institute for Soil Research and later at Rothamsted. At Rothamsted, his colleagues affectionately called him "Goldie."

1915-Goldschmit-VM
1915-Goldschmit-VM

During his time in Britain, he participated in important scientific discussions. He studied the use of raw materials and the production of heavy water. He also lectured on the presence of rare elements in coal ash. His work remained vital to the scientific community even during the chaos of war.

Victor Goldschmidt's legacy is preserved in many scientific honors and names. He was awarded the Wollaston Medal, which is the highest honor from the Geological Society of London. The mineral goldschmidtite (KNbO3) was named in his honor to recognize his contributions. Additionally, a mountain ridge in Spitsbergen called Goldschmidtfjella bears his name. An annual V. M. Goldschmidt Medal is also awarded by The Geochemical Society. His textbook, *Geochemistry*, was published in 1954, several years after his death in 1947. He remains a central figure in the history of Earth sciences.

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File:Al2SiO5 phase diagram.svg
Al2SiO5 phase diagram.svg
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