Nils Gustaf Nordenskiöld
Encyclopedia
Nils Gustaf Nordenskiöld (October 12, 1792, Mäntsälä
Mäntsälä
Mäntsälä is a municipality in the province of Southern Finland, and is part of the Uusimaa region. It has a population of and covers an area of ofwhich is water. The population density is....

 – February 2, 1866) was a Finnish
Finland
Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

 mineralogist and a traveller. He was the father of explorer Adolf Erik Nordenskiöld
Adolf Erik Nordenskiöld
Freiherr Nils Adolf Erik Nordenskiöld , also known as A. E. Nordenskioeld was a Finnish baron, geologist, mineralogist and arctic explorer of Finnish-Swedish origin. He was a member of the prominent Finland-Swedish Nordenskiöld family of scientists...

.

Life

Nordenskiöld was born in Mäntsälä
Mäntsälä
Mäntsälä is a municipality in the province of Southern Finland, and is part of the Uusimaa region. It has a population of and covers an area of ofwhich is water. The population density is....

 in southern Finland
Finland
Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

. After studying mineralogy in Finland
Finland
Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

 and Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

, Nordenskiöld was appointed inspector of mines in Finland. Elected corresponding member of the Russian Academy of Sciences
Russian Academy of Sciences
The Russian Academy of Sciences consists of the national academy of Russia and a network of scientific research institutes from across the Russian Federation as well as auxiliary scientific and social units like libraries, publishers and hospitals....

 on October 3, 1819. The Russian Academy of Sciences was established pursuant to the order of the Peter I of Russia
Peter I of Russia
Peter the Great, Peter I or Pyotr Alexeyevich Romanov Dates indicated by the letters "O.S." are Old Style. All other dates in this article are New Style. ruled the Tsardom of Russia and later the Russian Empire from until his death, jointly ruling before 1696 with his half-brother, Ivan V...

 by the Decree of the Ruling Senate dated January 28 (February 8), 1724. In 1853, he was elected a foreign member of the Royal Swedish Academy of Sciences
Royal Swedish Academy of Sciences
The Royal Swedish Academy of Sciences or Kungliga Vetenskapsakademien is one of the Royal Academies of Sweden. The Academy is an independent, non-governmental scientific organization which acts to promote the sciences, primarily the natural sciences and mathematics.The Academy was founded on 2...

.

Nordenskiöld described and discovered a number of minerals previously unknown in Finland and Russia. In 1820, Nordenskiöld published a treatise, which was renowned as the first scientific handbook on Finnish minerals. He also published a number of articles in foreign journals, ensuring that his reputation went beyond Scandinavia
Scandinavia
Scandinavia is a cultural, historical and ethno-linguistic region in northern Europe that includes the three kingdoms of Denmark, Norway and Sweden, characterized by their common ethno-cultural heritage and language. Modern Norway and Sweden proper are situated on the Scandinavian Peninsula,...

. In future years, he was to ensure that his son, Adolf Erik Nordenskiöld
Adolf Erik Nordenskiöld
Freiherr Nils Adolf Erik Nordenskiöld , also known as A. E. Nordenskioeld was a Finnish baron, geologist, mineralogist and arctic explorer of Finnish-Swedish origin. He was a member of the prominent Finland-Swedish Nordenskiöld family of scientists...

, shared this knowledge and became renowned as an explorer in his own right.

Nordenskiöld returned to Finland in 1823 and in 1828 was appointed superintendent of the newly established Mining Board in Helsingfors, a post he held until his death in 1865.

Gemstone discoveries

According to a widely popular but controversial story, alexandrite was discovered by Nordenskiöld, on the tsarevitch Alexander's sixteenth birthday on April 17, 1834 and named Alexandrite in honor of the future Tsar
Tsar
Tsar is a title used to designate certain European Slavic monarchs or supreme rulers. As a system of government in the Tsardom of Russia and Russian Empire, it is known as Tsarist autocracy, or Tsarism...

 of the Russian Empire
Russian Empire
The Russian Empire was a state that existed from 1721 until the Russian Revolution of 1917. It was the successor to the Tsardom of Russia and the predecessor of the Soviet Union...

. Although it was Nordenskiöld who discovered alexandrite, he could not possibly have discovered and named it on Alexander's birthday. Nordenskiöld's initial discovery occurred as a result an examination of a newly found mineral sample he had received from Count Lev Alekseevich Perovskii (1792-1856), which he identified it as emerald
Emerald
Emerald is a variety of the mineral beryl colored green by trace amounts of chromium and sometimes vanadium. Beryl has a hardness of 7.5–8 on the 10 point Mohs scale of mineral hardness...

 at first. Confused with the high hardness, he decided to continue his examinations. Later that evening, while looking at the specimen under candlelight, he was surprised to see that the color of the stone had changed to raspberry-red instead of green. Later, he confirmed the discovery of a new variety of chrysoberyl
Chrysoberyl
The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula BeAl2O4. The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar". Despite the similarity of their names, chrysoberyl and beryl are two completely...

, and suggested the name "diaphanite"(from the Greek "di" two and "aphanes", unseen or "phan", to appear, or show). Perovskii however had his own plans and used the rare specimen to ingratiate himself with the Imperial family by presenting it to the future Tsar and naming it Alexandrite in his honor on April 17, 1834, but it wasn't until 1842 that the description of the color changing chrysoberyl
Chrysoberyl
The mineral or gemstone chrysoberyl is an aluminate of beryllium with the formula BeAl2O4. The name chrysoberyl is derived from the Greek words χρυσός chrysos and βήρυλλος beryllos, meaning "a gold-white spar". Despite the similarity of their names, chrysoberyl and beryl are two completely...

 was published for the first time under the name of alexandrite.

In 1849, Nordenskjold examined what was known as "Ural's chrysolite" and discovered that it was a rich green variety of andradite garnet. In 1854, he proposed the name demantoid
Demantoid
Demantoid is the green gemstone variety of the mineral andradite, a member of the garnet group of minerals. Andradite is a calcium- and iron-rich garnet. The chemical formula is Ca3Fe23 with chromium substitution as the cause of the demantoid green color...

 (like a diamond) for the new gemstone became known to the world under this name.

External links

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