Thorstein Hiortdahl

Thorstein Hallager Hiortdahl (4 May 1839 – 29 October 1925) was a Norwegian chemist, mineralogist and politician.

[1] He was born in Bergen as a son of merchant Samuel Baar Hiortdahl (1807–1863) and Augusta Jacobine Hallager (1814–1892).

The mineral hiortdahlite, which was first discovered at Langesundsfjorden in Larvik, was named after him.

During this period, from 1887 to 1892, he was the dean of the Faculty of Mathematics and Natural Sciences.

He also taught chemistry at the Norwegian Military College from 1868 to 1912, chaired the supervising committee for the Higher College of Agriculture at Aas from 1881 to 1896, and was also a member of Kristiania city council from 1883 to 1892.