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Alexandre Safiannikoff
Alexandre Safiannikoff (1903—1988) was a Belgian geologist of Russian descent. Early life and military career Safiannikoff was a descendant of a family involved in the Imperial Russian Army. He was born in Dalian, Russian Empire, and joined the army of admiral Alexander Kolchak in Omsk, where he fought against the revolutionary troops. In 1920, he was incorporated into the Naval Academy in Vladivostok. In 1922, he became an officer, and moved to France, where he obtained degrees in sciences at the University of Paris in 1926, and geological engineering at the University of Nancy in 1927. Career in Africa Between 1929 and 1931, a French company charged him with prospecting in Chad, Ubangui-Shari, and French Equatorial Africa. Afterwards, he went to the Belgian Congo to work for the Empain group of Baron Empain. Eventually, he became the administrative director of the Compagnie Minière des Grands-Lacs. He became a naturalised Belgian citizen in 1950. As a geologist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyatheales
The order Cyatheales, which includes most tree ferns, is a taxonomic order of the fern class, Polypodiopsida. No clear morphological features characterize all of the Cyatheales, but DNA sequence data indicate the order is monophyletic. Some species in the Cyatheales have tree-like growth forms from a vertical rhizome, others have shorter or horizontal expanding rhizomes. Some species have scales on the stems and leaves, while others have hairs. However, most plants in the Cyatheales are tree ferns and have trunk-like stems up to tall. It is unclear how many times the tree form has evolved and been lost in the order.Judd, W.S., C.S. Campbell, E.A. Kellogg, P.F. Stevens, and M.J. Donoghue (Eds.) 2008. Plant Systematics: A Phylogenetic Approach, Third Edition. Sinauer Associates, Sunderland, Massachusetts, USA. Description While the Cyatheales have been shown to be monophyletic through molecular analysis, no prominent morphological characteristics are common to the entire group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Democratic Republic Of The Congo
The Democratic Republic of the Congo (french: République démocratique du Congo (RDC), colloquially "La RDC" ), informally Congo-Kinshasa, DR Congo, the DRC, the DROC, or the Congo, and formerly and also colloquially Zaire, is a country in Central Africa. It is bordered to the northwest by the Republic of the Congo, to the north by the Central African Republic, to the northeast by South Sudan, to the east by Uganda, Rwanda, and Burundi, and by Tanzania (across Lake Tanganyika), to the south and southeast by Zambia, to the southwest by Angola, and to the west by the South Atlantic Ocean and the Cabinda exclave of Angola. By area, it is the second-largest country in Africa and the 11th-largest in the world. With a population of around 108 million, the Democratic Republic of the Congo is the most populous officially Francophone country in the world. The national capital and largest city is Kinshasa, which is also the nation's economic center. Centered on the Cong ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maniema
Maniema is one of 26 provinces of the Democratic Republic of the Congo. Its capital is Kindu. Toponymy Henry Morton Stanley explored the area, calling it Manyema.Stanley, H.M., 1899, Through the Dark Continent, London: G. Newnes, Vol. One , Vol. Two Geography Maniema borders the provinces of Sankuru to the west, Tshopo to the north, North Kivu and South Kivu to the east, and Lomami and Tanganyika to the south. Maniema province has 7 territories, which are: # Kabambare # Kailo # Kasongo # Kibombo # Lubutu # Pangi # Punia Political divisions Maniema consists of the city of Kindu and seven territories: Punia, Pangi, Lubutu, Kibombo, Kasongo, Kailo and Kabambare. The city of Kindu has the communes of Alunguli, Kasuku and Mikelenge Economy Mining is the main industry in the province and diamonds, copper, gold and cobalt are mined outside of Kindu. Kailo Territory is home to open pit wolframite and Cassiterite mines. Education *University of Kindu See also *Maniem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kivu
Kivu was the name for a large "region" in the Democratic Republic of the Congo under the rule of Mobutu Sese Seko that bordered Lake Kivu. It included three "Sub-Regions" ("Sous-Régions" in French): Nord-Kivu, Sud-Kivu and Maniema, corresponding to the three current provinces created in 1986. The capital of the Kivu Region was in Bukavu, and the capitals of the three Sub-Regions were in Goma, Uvira and Kindu. Kivu has been repeatedly subjected to major conflicts since the early 20th century. Under Belgian colonial rule, it was the site of several religious revolts such as the 1944 Kivu uprising. Following independence, it was a battleground of the Simba rebellion, First Congo War, and Second Congo War, and has been the site of an ongoing military conflict since the early 2000s. In addition, an Ebola epidemic affected the region from August 2018 to June 2020. Geography Kivu is also the name for the entire region surrounding Lake Kivu, including the portions in Rwanda which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrochlore
Pyrochlore () is a mineral group of the niobium end member of the pyrochlore supergroup. The general formula, (where A and B are metals), represent a family of phases isostructural to the mineral pyrochlore. Pyrochlores are an important class of materials in diverse technological applications such as luminescence, ionic conductivity, nuclear waste immobilization, high temperature thermal barrier coatings, automobile exhaust gas control, catalysts, solid oxide fuel cell, ionic/electrical conductors etc. Occurrence The mineral is associated with the metasomatic end stages of magmatic intrusions. Pyrochlore crystals are usually well formed (euhedral), occurring usually as octahedra of a yellowish or brownish color and resinous luster. It is commonly metamict due to radiation damage from included radioactive elements. Pyrochlore occurs in pegmatites associated with nepheline syenites and other alkalic rocks. It is also found in granite pegmatites and greisens. It is characteristical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microlite
Microlite was once known as a pale-yellow, reddish-brown, or black isometric mineral composed of sodium calcium tantalum oxide with a small amount of fluorine. Its chemical formula is. Today it is a name of a group of oxide minerals of a similar stoichiometry having tantalum prevailing over titanium and niobium. The microlite group belongs to a large pyrochlore supergroup that occurs in pegmatites and constitutes an ore of tantalum. It has a Mohs hardness of 5.5 and a variable specific gravity of 4.2 to 6.4. It occurs as disseminated microscopic subtranslucent to opaque octahedral crystals with a refractive index of 2.0 to 2.2. Microlite is also called djalmaite, but both names are now obsolete. "Microlite" occurs as a primary mineral in lithium-bearing granite pegmatites, and in miarolitic cavities in granites. Association minerals include: albite, lepidolite, topaz, beryl, tourmaline, spessartine, tantalite and fluorite. "Microlite" was first described in 1835 for an occurren ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lueshe Mine
The Lueshe mine, or Lweshe mine, is a niobium Niobium is a chemical element with chemical symbol Nb (formerly columbium, Cb) and atomic number 41. It is a light grey, crystalline, and ductile transition metal. Pure niobium has a Mohs hardness rating similar to pure titanium, and it has sim ... mine located in Rutshuru Territory in North Kivu province of the Democratic Republic of the Congo. The site is one of the most economically significant pyrochlore deposits in the world. The rare niobium mineral was discovered at the mine, and is named after it. The mine is frequently caught up in violence surrounding the Kivu conflict. History Early history The mineral Lueshite was discovered at Lueshe in 1959, by Alexandre Safiannikoff. Safiannikoff was a Russian-born Belgian geologist, who worked for the Belgian Compagnie Minière des Grands-Lacs. The joint venture ''Société Minière de Lueshe'' (SOMINLU), founded by Somikubi and Union Carbide, was created in 1960 to prospect the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Édouard Empain
Édouard Louis Joseph, 1st Baron Empain (20 September 1852 – 22 July 1929), was a wealthy Walloon Belgian engineer, entrepreneur, financier and industrialist, as well as an amateur Egyptologist. During World War I he became a known Major General. Early life Empain was born at Belœil, Belgium, and was the son of schoolteacherTHE BELGIANS OF EGYPT, 13 May 1995 at www.egy.com François Julien Empain and his wife Catherine (née Lolivier). He went into business with his brother, and other family members, and amassed a great fortune. Empain began his career a draughtsman at a metallurgical company, Société métallurgique ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Empain Group
The Empain group was a loose grouping of companies founded by Édouard Empain (1852–1929) of Belgium and controlled by the Empain family. From 1881 until merging with Schneider & Cie in 1969, the companies engaged in a broad range of activities including tramways, railways, electricity generation, construction and mining. The main areas of activity were Belgium and France, but the group also pursued opportunities in Russia, Egypt, China and elsewhere, and played a large role in the development of the eastern Belgian Congo. Origins The brothers Édouard and François Empain were the children of François-Julien Empain, a schoolteacher, and Catherine Lolivier. Both parents came from families of lower-middle-class artisans. Édouard graduated from high school in 1872 and obtained a job with the ''Société métallurgique et charbonnière belge''. He was briefly a partner in a stone quarry company in 1878–1879, then became a partner in a company that produced marble and building s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Equatorial Africa
French Equatorial Africa (french: link=no, Afrique-Équatoriale française), or the AEF, was the federation of French colonial possessions in Equatorial Africa, extending northwards from the Congo River into the Sahel, and comprising what are today the countries of Chad, the Central African Republic, the Republic of the Congo, and Gabon. History Established in 1910, the Federation contained four (later five) colonial possessions: French Gabon, French Congo, Ubangi-Shari and French Chad. The Governor-General was based in Brazzaville with deputies in each territory. In 1911, France ceded parts of the territory to German Kamerun as a result of the Agadir Crisis. The territory was returned after Germany's defeat in World War I, while most of Cameroon proper became a French League of Nations mandate not integrated into the AEF. French Equatorial Africa, especially the region of Ubangi-Shari had a similar concession system as the Congo Free State and similar atrocities were also c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ubangui-Shari
Ubangi-Shari (french: Oubangui-Chari) was a French colony in central Africa, a part of French Equatorial Africa. It was named after the Ubangi and Chari rivers along which it was colonised. It was established on 29 December 1903, from the Upper Ubangi (') and Upper Shari (') territories of the French Congo; renamed the Central African Republic (CAR) on 1 December 1958; and received independence on 13 August 1960.''World Statesmen''.Central African Republic" Accessed 29 Mar 2014. History French activity in the area began in 1889 with the establishment of the outpost Bangi at the head of navigation on the Ubangi. The Upper Ubangi was established as part of the French Congo on 9 December 1891. Despite a France-Congo Free State convention establishing a border around the 4th parallel, the area was contested from 1892 to 1895 with the Congo Free State, which claimed the region as its territory of Ubangi-Bomu ('). The Upper Ubangi was a separate colony from 13 July 1894, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
