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Bagrationite
Bagrationite is a variety of allanite, discovered by Georgians, Georgian Prince Peter Bagrationi in 1847 and named in his honour.A System of Mineralogy, James Dwight Dana, 1869, p. 286-287 References {{reflist Calcium minerals Lanthanide minerals Yttrium minerals Aluminium minerals Iron(II,III) minerals Epidote group Monoclinic minerals Minerals in space group 11 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Bagrationi
Prince Pyotr Romanovich Bagration (russian: Пётр Рома́нович Багратио́н, ka, პეტრე რომანის (რევაზის) ძე ბაგრატიონი; 24 September 1818 – 17 January 1876), the son of general Prince Roman Bagration, was a Russian-Georgian statesman, general and scientist who invented the first dry galvanic cell. Biography A descendant of the Georgian royal Bagrationi dynasty, with Georgia already annexed by the Russian Empire at the death of King George XII Bagration of Georgia in 1801, successor of King Erekle II Bagration, (Georgian: ერეკლე II) (7 November 1720 or 7 October 1721 – 11 January 1798) reigning as the king of Kakheti from 1744 to 1762, and of Kartli and Kakheti from 1762 until 1798. Both his father, Roman (Revaz) Bagrationi (1778 — Tiflis, 1834), and uncle, Pyotr Bagration ( Kizlar, Dagestan, 1765 — Battle of Borodino, 1812), were famous Russian Army generals. In 1840, Bag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allanite
Allanite (also called orthite) is a sorosilicate group of minerals within the broader epidote group that contain a significant amount of rare-earth elements. The mineral occurs mainly in metamorphosed clay-rich sediments and felsic igneous rocks. It has the general formula A2M3Si3O12 H where the A sites can contain large cations such as Ca2+, Sr2+, and rare-earth elements, and the M sites admit Al3+, Fe3+, Mn3+, Fe2+, or Mg2+ among others. However, a large amount of additional elements, including Th, U, Be, Zr, P, Ba, Cr and others may be present in the mineral. The International Mineralogical Association lists four minerals in the allanite group, each recognized as a unique mineral: allanite-(Ce), allanite-(La), allanite-(Nd), and allanite-(Y), depending on the dominant rare earth present: cerium, lanthanum, neodymium or yttrium. Allanite contains up to 20% rare-earth elements and is a valuable source of them. The inclusion of thorium and other radioactive elements in allanite re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Dwight Dana
James Dwight Dana Royal Society of London, FRS FRSE (February 12, 1813 – April 14, 1895) was an American geologist, mineralogist, volcanologist, and zoologist. He made pioneering studies of mountain-building, volcano, volcanic activity, and the origin and structure of continents and oceans around the world. His zoological author abbreviation is Dana. Early life and career Dana was born February 12, 1813, in Utica, New York. His father was merchant James Dana (1780–1860) and his mother was Harriet Dwight (1792–1870). Through his mother he was related to the Dwight New England family of missionaries and educators including uncle Harrison Gray Otis Dwight and first cousin Henry Otis Dwight. He showed an early interest in science, which had been fostered by Fay Edgerton, a teacher in the Utica high school, and in 1830 he entered Yale College in order to study under Benjamin Silliman the elder. Graduating in 1833, for the next two years he was teacher of mathematics to midshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Salisbury Dana
Edward Salisbury Dana (November 16, 1849 – June 16, 1935) was an American mineralogist and physicist. He made important contributions to the study of minerals, especially in the field of crystallography. Life and career E. S. Dana was born in New Haven, Connecticut, the son of the geologist and mineralogist James Dwight Dana. He graduated from Yale College in 1870, where he had been a member of Scroll and Key, and then after two years with George J. Brush at the Sheffield Scientific School, spent another two years studying in Heidelberg and Vienna, specializing in crystal optics and crystallography. He then returned to Yale to take his M.A. and Ph.D. degrees. He was a member of the Connecticut Academy of Arts and Sciences. He was appointed assistant professor of natural philosophy and astronomy at Yale in 1879 and then became professor of physics. His research and publishing was mainly in the field of mineralogy. Dana became an editor of the ''American Journal of Science'' in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Ebenezer Ford
William is a masculine given name of Norman French origin.Hanks, Hardcastle and Hodges, ''Oxford Dictionary of First Names'', Oxford University Press, 2nd edition, , p. 276. It became very popular in the English language after the Norman conquest of England in 1066,All Things William"Meaning & Origin of the Name"/ref> and remained so throughout the Middle Ages and into the modern era. It is sometimes abbreviated "Wm." Shortened familiar versions in English include Will, Wills, Willy, Willie, Liam, Bill, and Billy. A common Irish form is Liam. Scottish diminutives include Wull, Willie or Wullie (as in Oor Wullie or the play ''Douglas''). Female forms are Willa, Willemina, Wilma and Wilhelmina. Etymology William is related to the German given name ''Wilhelm''. Both ultimately descend from Proto-Germanic ''*Wiljahelmaz'', with a direct cognate also in the Old Norse name ''Vilhjalmr'' and a West Germanic borrowing into Medieval Latin ''Willelmus''. The Proto-Germ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Joseph Henry Collins
Joseph Henry Collins FGS, (16 March 1841 – 12 April 1916) was a British mining engineer, mineralogist and geologist. He died at his home, Crinnis House, near St Austell, on 12 April 1916 and is buried in Campdowns cemetery, Charlestown.''Transactions of the Institution of Mining and Metallurgy'', 1916, p393 Career He was at various times the Secretary or President of the three learned societies of Cornwall – Royal Geological Society of Cornwall (President from 1903–1904, and 1911–1912), the Royal Cornwall Polytechnic Society and the Royal Institution of Cornwall. Contributed significantly to the ''Transactions of the Royal Geological Society of Cornwall'', and was awarded the Bolitho Medal by the RGSC in 1898. Collins was the founding Secretary of the Mineralogical Society of Great Britain and Ireland in 1876 and was involved in founding the Institution of Mining and Metallurgy, becoming its Vice-President in 1892. He also lectured for, and was secretary of, The Miners ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Crookes
Sir William Crookes (; 17 June 1832 – 4 April 1919) was a British chemist and physicist who attended the Royal College of Chemistry, now part of Imperial College London, and worked on spectroscopy. He was a pioneer of vacuum tubes, inventing the Crookes tube which was made in 1875. This was a foundational discovery that eventually changed the whole of chemistry and physics. He is credited with discovering the element thallium, announced in 1861, with the help of spectroscopy. He was also the first to describe the spectrum of terrestrial helium, in 1865. Crookes was the inventor of the Crookes radiometer but did not discern the true explanation of the phenomenon he detected. Crookes also invented a 100% ultraviolet blocking sunglass lens. For a time, he was interested in spiritualism and became president of the Society for Psychical Research. Biography Crookes' life was one of unbroken scientific activity that extended over sixty-seven years. He was considered remarkable for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry William Bristow
Henry William Bristow (17 May 1817 – 14 June 1889) was an English geologist and naturalist. Life He was born in London on 17 May 1817. He was the son of Major-general Henry Bristow, a member of a Wiltshire family, and his wife Elizabeth Atchorne of High Wycombe. After passing with distinction through King's College, London, he joined the staff of the Geological Survey in 1842, and was set to work in Radnorshire. From this county he was shortly afterwards transferred to the Cotteswold district, which he examined up to Bath Bath may refer to: * Bathing, immersion in a fluid ** Bathtub, a large open container for water, in which a person may wash their body ** Public bathing, a public place where people bathe * Thermae, ancient Roman public bathing facilities Plac ..., and afterwards surveyed a large part of Dorset, Wiltshire, and Hampshire, with the Isle of Wight, besides some of the Wealden area, Berkshire, and Essex, rising ultimately in 1872 to the position of direc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georgians
The Georgians, or Kartvelians (; ka, ქართველები, tr, ), are a nation and indigenous Caucasian ethnic group native to Georgia and the South Caucasus. Georgian diaspora communities are also present throughout Russia, Turkey, Greece, Iran, Ukraine, United States, and European Union. Georgians arose from Colchian and Iberian civilizations of classical antiquity; Colchis was interconnected with the Hellenic world, whereas Iberia was influenced by the Achaemenid Empire until Alexander the Great conquered it. In the 4th century, the Georgians became one of the first to embrace Christianity and now the majority of Georgians are Orthodox Christians, with most following their national autocephalous Georgian Orthodox Church, although there are small Georgian Catholic and Muslim communities as well as a significant number of irreligious Georgians. Located in the Caucasus, on the continental crossroads of Europe and Asia, the High Middle Ages saw Georgian people form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calcium Minerals
Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. It is the fifth most abundant element in Earth's crust, and the third most abundant metal, after iron and aluminium. The most common calcium compound on Earth is calcium carbonate, found in limestone and the fossilised remnants of early sea life; gypsum, anhydrite, fluorite, and apatite are also sources of calcium. The name derives from Latin ''calx'' "lime", which was obtained from heating limestone. Some calcium compounds were known to the ancients, though their chemistry was unknown until the seventeenth century. Pure calcium was isolated in 1808 via electrolysis of its oxide by Humphry Davy, who named the element. Calcium compounds are widely used in many industries: in foods and pharmace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lanthanide Minerals
The lanthanide () or lanthanoid () series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare-earth elements or rare-earth metals. The informal chemical symbol Ln is used in general discussions of lanthanide chemistry to refer to any lanthanide. All but one of the lanthanides are f-block elements, corresponding to the filling of the 4f electron shell. There is some dispute on whether lanthanum or lutetium is a d-block element, but lutetium is usually considered so by those who study the matter; it is included due to its chemical similarities with the other 14. All lanthanide elements form trivalent cations, Ln3+, whose chemistry is largely determined by the ionic radius, which decreases steadily from lanthanum to lutetium. These elements are called lanthanides because the elements in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yttrium Minerals
Yttrium is a chemical element with the symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element". Yttrium is almost always found in combination with lanthanide elements in rare-earth minerals, and is never found in nature as a free element. 89Y is the only stable isotope, and the only isotope found in the Earth's crust. The most important uses of yttrium are LEDs and phosphors, particularly the red phosphors in television set cathode ray tube displays. Yttrium is also used in the production of electrodes, electrolytes, electronic filters, lasers, superconductors, various medical applications, and tracing various materials to enhance their properties. Yttrium has no known biological role. Exposure to yttrium compounds can cause lung disease in humans. The element is named after '' ytterbite'', a mineral first identified in 1787 by the chemist Carl Axel Arrhen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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