|
Albin Weisbach
Albin Weisbach (December 6, 1833 – February 26, 1901) was a German mineralogist and professor of mineralogy at the mining academy at Freiberg. He studied various minerals and described and named several including trögerite, walpurgin, zeunerite, rbagite, titanium zonite, uranospinite, uranocircite, cobalt spar, arnimite, and argyrodite. Life and work Weisbach was born in Freiberg, son of professor Julius Weisbach and Marie née Winkler. He grew up in a circle of mining professors and became interested in minerals. He joined the Freiberg Gymnasium in 1842 and went to the mining academy in 1850. His favorite teacher was Ferdinand Reich. He then went to Göttingen and Paris, studying metallurgy and in 1824 he returned to Freiberg as an inspector. In 1827 he taught physics, from 1830 petrification, and chemistry from 1842. He became a senior metallurgical assayer in 1856. August Breithaupt became a guide and close friend. He learned crystallography from his father and received a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mineralogist
Mineralogy is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical mineralogy, optical) properties of minerals and mineralized artifact (archaeology), artifacts. Specific studies within mineralogy include the processes of mineral origin and formation, classification of minerals, their geographical distribution, as well as their utilization. History Early writing on mineralogy, especially on gemstones, comes from ancient Babylonia, the ancient Greco-Roman world, ancient and medieval History of China, China, and Sanskrit texts from History of India, ancient India and the ancient Islamic world. Books on the subject included the ''Naturalis Historia, Natural History'' of Pliny the Elder, which not only described many different minerals but also explained many of their properties, and Kitab al Jawahir (Book of Precious Stones) by Persian scientist Al-Biruni. The German Renaissance specialist Georgius Agricola ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freiberg
Freiberg () is a university and former mining town in Saxony, Germany, with around 41,000 inhabitants. The city lies in the foreland of the Ore Mountains, in the Saxon urbanization axis, which runs along the northern edge of the Elster and Ore Mountains, stretching from Plauen in the southwest via Zwickau, Chemnitz and Freiberg to Dresden in the northeast. It sits on the Freiberger Mulde, a tributary of the Mulde River. It is a '' Große Kreisstadt'' (large district town), and the administrative seat of ''Landkreis Mittelsachsen'' (district Central Saxony). Freiberg is connected to Dresden by the S3 line of the Dresden S-Bahn. The entire historic center of the Silver City is under monument protection, and together with local monuments of mining history such as the ''Reiche Zeche'' ore mine, it has been part of the UNESCO World Heritage Site Erzgebirge/Krušnohoří Mining Region since 2019 due to its exceptional testimony to the development of mining techniques across ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeunerite
Zeunerite is a green copper uranium arsenate mineral with formula Cu(UO2)2(AsO4)2·(10-16)H2O. It is a member of the autunite group. The associated mineral metazeunerite is a dehydration product of zeunerite. Zeunerite occurs as a secondary mineral in the oxidized weathering zone of hydrothermal uranium ore deposits which contain arsenic. Olivenite, mansfieldite, scorodite, azurite and malachite are found in association with zeunerite. It was first described in 1872 for an occurrence in the Schneeberg District, Ore Mountains, Saxony Saxony, officially the Free State of Saxony, is a landlocked state of Germany, bordering the states of Brandenburg, Saxony-Anhalt, Thuringia, and Bavaria, as well as the countries of Poland and the Czech Republic. Its capital is Dresden, and ..., Germany. It was named for Gustav Anton Zeuner (1828–1907). References Uranium(VI) minerals Arsenate minerals Copper(II) minerals Tetragonal minerals Minerals in space group 126 Minerals de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranocircite
Uranocircite or Uranocircite-II is a uranium mineral with the chemical formula: Ba(UO2)2(PO4)2·10H2O. Uranocircite-I was discredited (the IMA-CMNMC published 'The New IMA List of Minerals', September 2012). It is a phosphate mineral which contains barium and is a green to yellow colour. It has a Mohs hardness of about 2. The "circ" in the name uranocircite is from the ancient Greek word for "falcon", because it was discovered in Falkenstein, Germany. Uranocircite contains about 45% uranium, and is mainly mined in Bergen in Saxony Saxony, officially the Free State of Saxony, is a landlocked state of Germany, bordering the states of Brandenburg, Saxony-Anhalt, Thuringia, and Bavaria, as well as the countries of Poland and the Czech Republic. Its capital is Dresden, and ..., Germany. References Webmineral data Uranium(VI) minerals Phosphate minerals Tetragonal minerals Minerals in space group 139 {{phosphate-mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argyrodite
Argyrodite is an uncommon silver germanium sulfide mineral with formula Ag8GeS6. The color is iron-black with a purplish tinge, and the luster metallic. Discovered and named by Albin Weisbach in 1886, it is of interest as it was the material from which Clemens Winkler isolated the element germanium, 15 years after it had been postulated by Mendeleev. It was first described for an occurrence in the Himmelsfürst Mine, Ore Mountains, Freiberg, Saxony, Germany. The Freiberg mineral had previously been imperfectly described by August Breithaupt under the name "Plusinglanz", and Bolivian crystals were incorrectly described in 1849 as crystallized brongniardite. Isomorphous with argyrodite is the corresponding tin bearing mineral Ag8SnS6, also found in Bolivia as pseudocubic crystals, and known by the name canfieldite. There is also a related mineral, putzite, with composition (Cu4.7Ag3.3)GeS6. Argyrodite gets its name from the Greek words that loosely translate into "rich in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julius Weisbach
Julius Ludwig Weisbach (10 August 1806 – 24 February 1871) was a German mathematician and engineer. He taught at the mining academy (Bergakademie) at Freiberg. He taught surveying, descriptive geometry, and mineral crystal measurement. Life and work Weisbach was born on 10 August 1806 in Mittelschmiedeberg (now Mildenau municipality). His father was a foreman at a mill. He studied at a village school and then at Annaberg before going to the '' Bergakademie'' in Freiberg from 1822 to 1826. After that, he studied with Carl Friedrich Gauss in Göttingen and with Friedrich Mohs in Vienna. In 1831 he returned to Freiberg where he worked as mathematics teacher at the local Gymnasium. In 1833 he became teacher for Mathematics and the Theory of Mountain Machines at the Freiberg ''Bergakademie''. In 1836 he was promoted to Professor for applied mathematics, mechanics, theory of mountain machines and so-called ''Markscheidekunst''. He was a popular teacher and taught field surveying met ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferdinand Reich
Ferdinand Reich (19 February 1799 – 27 April 1882) was a German chemist who co-discovered indium in 1863 with Hieronymous Theodor Richter. Reich was born in Bernburg, Anhalt-Bernburg, Holy Roman Empire and died in Freiberg, Saxony, Freiberg. He was color blindness, color blind, or could only see in whites and blacks, and that is why Theodor Richter became his science partner. Richter would examine the colors produced in reactions that they studied. Reich and Richter ended up isolating the indium, creating a small supply, although it was later found in more regions. They isolated the indium at the Technische Universität Bergakademie Freiberg, Freiberg University of Mining and Technology in Germany. In 1803, Laplace and Gauss both derived that, if a heavy object is dropped from a height h at latitude \Phi, and the earth rotates from west to east with angular velocity \Omega, then the object would be deflected to the east by a distance of d=2 / 3 \Omega \cos (\Phi) \sqrt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
August Breithaupt
Johann Friedrich August Breithaupt (May 16, 1791 – September 22, 1873) was a German mineralogist and professor at Freiberg Mining Academy in Freiberg, Saxony. Biography He was born in Probstzella, Holy Roman Empire. He received his doctorate at the Universities of Jena and Marburg. He studied under Abraham Gottlob Werner at the Freiberg Mining Academy where he received an appointment in 1813 as teacher and lapidary, and became professor of mineralogy after the departure of Friedrich Mohs in 1826. He held that position until 1866. Research He is credited with the discovery of 47 valid mineral species. The mineral breithauptite was named in his honor. His work included important contributions to crystallography Crystallography is the branch of science devoted to the study of molecular and crystalline structure and properties. The word ''crystallography'' is derived from the Ancient Greek word (; "clear ice, rock-crystal"), and (; "to write"). In J ... and the physical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naunhof
Naunhof () is a town in the Leipzig district, in the Free State of Saxony, Germany. It is situated on the river Parthe, 11 km northwest of Grimma, and 16 km southeast of Leipzig Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Ge ... (centre). Personalities * Ernst Knebel (1892-1945), German general * Ludwig Külz (1875-1938), German tropical physician * Paul Horst-Schulze (1876-1937), German painter, graphic artist and handicraftsman Coat of arms In red a continuous seven zinnige silver wall with open passage and seated cornered tower with two open windows on each side and pointed roof and golden orb as a knob. References Leipzig (district) {{Leipzig-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1833 Births
Events January–March * January 3 – The United Kingdom reasserts British sovereignty over the Falkland Islands in the South Atlantic Ocean. * February 6 (January 25 on the Greek calendar) – Prince Otto Friedrich Ludwig of Bavaria arrives at the port of Nafplio to assume the title King Othon the First of Greece * February 16 – The United States Supreme Court hands down its landmark decision of Barron v. Mayor and City Council of Baltimore. April–June * April 1 – General Antonio López de Santa Anna is elected President of Mexico by the legislatures of 16 of the 18 Mexican states. During his frequent absences from office to fight on the battlefield, Santa Anna turns the duties of government over to his vice president, Valentín Gómez Farías. * April 18 – Over 300 delegates from England, Scotland, Wales and Ireland travel to the office of the Prime Minister, the Earl Grey, to call for the immediate abolition of slavery throughout the British Empire. * May 6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1901 Deaths
December 13 of this year is the beginning of signed 32-bit computing, 32-bit Unix time, and is scheduled to end in Year 2038 problem, January 19, 2038. Summary Political and military 1901 started with the Federation of Australia, unification of multiple Crown colony, British colonies in Australia on January 1 to form the Australia, Commonwealth of Australia after a 1898–1900 Australian constitutional referendums, referendum in 1900, Subsequently, the 1901 Australian federal election, 1901 Australian election would see the first Prime Minister of Australia, Australian prime minister, Edmund Barton. On the same day, Nigeria became a Colonial Nigeria, British protectorate. Following this, the Victorian era, Victorian Era would come to a end after Queen Victoria died on January 22 after a reign of 63 years and 216 days, which was List of monarchs in Britain by length of reign, longer than those of any of her predecessors, Her son, Edward VII, succeeded her to the throne. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
