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Friedrich August Frenzel
Friedrich August Frenzel (24 May 1842 – 27 August 1902) was a German mineralogist. He was born in a miner's family in Freiberg, Saxony. In 1861 he was awarded a scholarship which enabled him to study mineralogy at Bergakademie Freiberg. There he attracted the attention of August Breithaupt who asked him to help with organising the mineralogical collections of the academy and with testing mineral samples, and to assist in the professor's mineralogical research. In 1865 Frenzel finished his studies and was awarded the title of a mining inspector. From then on, he worked for 25 years as a chemist in the metallurgical laboratories. He also lectured at the Bergakademie. One of his best known works is the mineralogical encyclopedia for the Kingdom of Saxony (''Mineralogisches Lexicon Für Das Königreich Sachsen''), which contains descriptions of 723 minerals found in Saxony, information on their physical properties and chemical compositions, and descriptions of the corresponding locali ... [...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] |
1902 Deaths
Events January * January 1 ** The Nurses Registration Act 1901 comes into effect in New Zealand, making it the first country in the world to require state registration of nurses. On January 10, Ellen Dougherty becomes the world's first registered nurse. ** Nathan Stubblefield demonstrates his Mobile phone, wireless telephone device in the U.S. state of Kentucky. * January 8 – A train collision in the New York Central Railroad's Park Avenue Tunnel (railroad), Park Avenue Tunnel kills 17 people, injures 38, and leads to increased demand for electric trains and the banning of steam locomotives in New York City. * January 23 – Hakkōda Mountains incident: A snowstorm in the Hakkōda Mountains of northern Honshu, Empire of Japan, Japan, kills 199 during a military training exercise. * January 30 – The Anglo-Japanese Alliance is signed. February * February 12 – The 1st Conference of the International Woman Suffrage Alliance takes place in Washing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1842 Births
Events January–March * January 6–January 13, 13 – First Anglo-Afghan War – Massacre of Elphinstone's army (Battle of Gandamak): British East India Company troops are destroyed by Afghan forces on the road from Kabul to Jalalabad, Afghanistan, by Wazir Akbar Khan, Akbar Khan, son of Dost Mohammad Khan (Emir of Afghanistan), Dost Mohammad Khan. * January 8 – Delft University of Technology is established by William II of the Netherlands, as a 'Royal Academy for the education of civilian engineers'. * January 23 – Antarctic explorer James Clark Ross, charting the eastern side of James Ross Island, reaches a Farthest South of 78°09'30"S. * January ** Michael Alexander (bishop), Michael Alexander takes office, as the first appointee to the Anglican-German Bishopric in Jerusalem. ** United States, American medical student William E. Clarke of Berkshire Medical College becomes the first person to administer an inhaled anesthetic, to facilitate a surgical procedure. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th-century German Chemists
The 19th century began on 1 January 1801 (represented by the Roman numerals MDCCCI), and ended on 31 December 1900 (MCM). It was the 9th century of the 2nd millennium. It was characterized by vast social upheaval. Slavery was Abolitionism, abolished in much of Europe and the Americas. The First Industrial Revolution, though it began in the late 18th century, expanded beyond its British homeland for the first time during the 19th century, particularly remaking the economies and societies of the Low Countries, France, the Rhineland, Northern Italy, and the Northeastern United States. A few decades later, the Second Industrial Revolution led to ever more massive urbanization and much higher levels of productivity, profit, and prosperity, a pattern that continued into the 20th century. The Catholic Church, in response to the growing influence and power of modernism, secularism and materialism, formed the First Vatican Council in the late 19th century to deal with such problems an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Mineralogists
German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also German nationality law **Germanic peoples (Roman era) *German diaspora * German language * German cuisine, traditional foods of Germany People * German (given name) * German (surname) * Germán, a Spanish name Places * German (parish), Isle of Man * German, Albania, or Gërmej * German, Bulgaria * German, Iran * German, North Macedonia * German, New York, U.S. * Agios Germanos, Greece Other uses * German (mythology), a South Slavic mythological being * Germans (band), a Canadian rock band * "German" (song), a 2019 song by No Money Enterprise * ''The German'', a 2008 short film * "The Germans", an episode of ''Fawlty Towers'' * ''The German'', a nickname for Congolese rebel André Kisase Ngandu See also * Germanic (disambiguat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cylindrite
Cylindrite is a sulfosalt mineral containing tin, lead, antimony and iron with formula: Pb3Sn4FeSb2 S14. It forms triclinic pinacoidal crystals which often occur as tubes or cylinders which are in fact rolled sheets. It has a black to lead grey metallic colour with a Mohs hardness of 2 to 3 and a specific gravity of 5.4. It was first discovered in the Santa Cruz mine, Oruro Department, Bolivia in 1893. The name arises from its curious cylindrical crystal which it forms almost uniquely among mineral In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.John P. Rafferty, ed. (2011): Mi ...s. See also * Classification of minerals * List of minerals References Lead minerals Tin minerals Iron minerals Antimony minerals Sulfosalt minerals Triclinic minerals {{sulfide-mineral-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amarantite
Amarantite is an amaranth-red to brownish mineral with the general formula of Fe3+2O(SO4)2·7H2O or Fe3+SO4(OH)·3H2O. The name comes from the Greek word αμάραντος which means amaranth, an imaginary undying red flower, in allusion to its color. Amarantite is triclinic class=skin-invert-image, 180px, Triclinic (a ≠ b ≠ c ≠ a and α, β, γ, 90° pairwise different) In crystallography, the triclinic (or anorthic) crystal system is one of the seven crystal systems. A crystal system is described by three b ..., which means crystallographically, it has only one symmetry fold. It must be rotated 360 degrees to be exactly the same. Due to it being triclinic it falls into the biaxial optical class, the axis degrees do not equal 90 degrees and the sides of each axis are not the same length.Alpers, C.N., Jember, J.L. and, Nordstrom, D.K.(2000) ''Reviews in Mineralogy and Geochemistry'' (volume 40) ''Sulfate Minerals: Crystallography, Geochemisrty, and Environmental Si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lautite
Lautite is a rare mineral belonging to the class of sulfides and sulfosalts with the general formula CuAsS. It is orthorhombic and is known to form up to 2.3 cm long prismatic or flat crystals. It is also found as grains or masses. First identified by Friedrich August Frenzel in 1880 in the Rudolphschacht mine near Lauta in Saxony, it was named after its type locality.Frenzel, A. (1880). XIX. Mineralogisches. Zeitschrift für Kristallographie, Mineralogie und Petrographie, 3(6), 504-516. Lautite is formed in veins under hydrothermal conditions at medium temperatures. Depending on the locality it is found accompanied by arsenic, tennantite, proustite, chalcopyrite, galenite, and baryte (in the type locality); by kutinaite and paxite (in Nieder-Beerbach); or by arsenic, bismuth, tennantite, loellingite, rammelsbergite, proustite, and quartz (in Sainte-Marie-aux-Mines). Aside from the type locality, the mineral is found in other places in the Ore Mountains, in Sankt Andr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
