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Lejja Nature Recreation Park
Lejja is a community of 33 villages in Enugu State, southeastern Nigeria. Lejja is mainly inhabited by the Igbo people and is located on the edge of the Benue Plateau, which has rich laterite and basalt resources. Archaeological evidence of iron smelting in Lejja dates back to 2000 BC, making it one of the earliest and most important iron smelting sites in sub-Saharan Africa. Otobo Ugwu Dunoka Square is a famous iron smelting site, which contains more than 800 cylindrical slag blocks, each weighing 34 to 57 kilograms. Most of the religious customs related to the monument in the square are associated with iron smelting activities, which together form an important intangible cultural heritage of Lejja in terms of politics, economy, judiciary, medicine, gender relations and other aspects. Archaeologists have discovered multiple ironmaking, residential and ritual sites in the Lejja area, providing historical evidence for understanding ancient ironmaking technology, religious customs a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enugu State
Enugu () verbally pronounced as "Enụgwụ" by the Igbo indigenes is a state in the South-East geopolitical zone of Nigeria, bordered to the north by the states of Benue and Kogi, Ebonyi State to the east and southeast, Abia State to the south, and Anambra State to the west. The state takes its name from its capital and largest city, Enugu. The city acquired township status in 1917 and was called Enugwu-Ngwo. Due to the rapid expansion towards areas owned by other indigenous communities, it was renamed Enugu in 1928. Of the 36 states, Enugu is the 29th largest in area and 22nd most populous with an estimated population of over 4.4 million as of 2016. Geographically, the state is divided between the Niger Delta swamp forests in the far south and the drier Guinean forest–savanna mosaic with some savanna in the rest of the state. Other important geographical features are the Udi-Nsukka Plateau and Ekulu River, which flows through the city of Enugu. Modern-day Enugu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuyere
A tuyere or tuyère (; ) is a tube, nozzle or pipe allowing the blowing of air into a furnace or hearth.W. K. V. Gale, The iron and Steel industry: a dictionary of terms (David and Charles, Newton Abbot 1972), 216–217. Air or oxygen is injected into a hearth under pressure from bellows or a blowing engine or other devices. This causes the fire to become hotter in front of the blast than it would otherwise have been, enabling metals to be smelted or melted or made hot enough to be worked in a forge, though these are blown only with air. This applies to any process where a blast is delivered under pressure to make a fire hotter. Archeologists have discovered tuyeres dating from the Iron Age; one example dates from between 770 BCE and 515 BCE. Following the introduction of hot blast, tuyeres are often water-cooled. Around the year 1500 new ironmaking techniques, including the blast furnace and finery forge, were introduced into England from France, along with the French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adada Shrine At Nkwo Lejja (The Community Traditional Market)
''Adada'' () is a 1987 South Korean film directed by Im Kwon-taek, based on a story by Kye Yong-mook. Plot The film tells the story of a deaf-mute woman living in a small village in Korea during the 1920s. Cast *Shin Hye-soo *Han Ji-il *Lee Geung-young * Kim Ji-young *Jeon Moo-song *Park Wung Awards *Best Actress ( Shin Hye-soo), Montreal World Film Festival The Montreal World Film Festival (), commonly abbreviated MWFF in English or FFM in French, was an annual film festival in Montreal, Quebec, Canada from 1977 to 2019.Films directed by Im Kwon-taek 1980s Korean-language films ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacred Space
A sacred space, sacred ground, sacred place, sacred temple, holy ground, holy place or holy site is a location which is regarded to be sacred or hallowed. The sacredness of a Sacred natural site, natural feature may accrue through tradition or be granted through a blessing. One or more religions may consider sacred locations to be of special significance. Often, such locations either are or become the home of Sanctuary, sanctuaries, shrines, Place of worship , places of worship, or locations conducive to meditation. Regardless of construction or use, these areas may have a variety of ritual or taboo associations – including limitations on visitors or on allowed actions within the space. Such places may become the focus of pilgrimage, drawing pilgrims from great distances, or simply locations of significance for the local populace. A sacred space is a designated area, often marked by physical boundaries or symbols, that is considered sacred, holy or consecrated by a particular ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Altar
An altar is a table or platform for the presentation of religion, religious offerings, for sacrifices, or for other ritualistic purposes. Altars are found at shrines, temples, Church (building), churches, and other places of worship. They are used particularly in Christianity, Buddhism, Hinduism, and modern paganism. Many historical-medieval faiths also made use of them, including the Religion in ancient Rome, Roman, Religion in ancient Greece, Greek, and Norse paganism, Norse religions. Etymology The modern English language, English word ''wikt:altar#English, altar'' was derived from Middle English ''wikt:alter#Latin, altar'', from Old English ''wikt:alter, alter'', taken from Latin ''wikt:altare#Latin, altare'' ("altar"), probably related to ''wikt:adolere#Etymology 2, adolere'' ("burn"); thus "burning place", influenced by ''wikt:altus#Latin, altus'' ("high"). It displaced the native Old English word ''wikt:weofod#Old English, wēofod''. Altars in antiquity In antiquity, alta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ochre
Ochre ( ; , ), iron ochre, or ocher in American English, is a natural clay earth pigment, a mixture of ferric oxide and varying amounts of clay and sand. It ranges in colour from yellow to deep orange or brown. It is also the name of the colours produced by this pigment, especially a light brownish-yellow. A variant of ochre containing a large amount of hematite, or dehydrated iron oxide, has a reddish tint known as red ochre (or, in some dialects, ruddle). The word ochre also describes clays coloured with iron oxide derived during the extraction of tin and copper. Earth pigments Ochre is a family of earth pigments, which includes yellow ochre, red ochre, purple ochre, sienna, and umber. The major ingredient of all the ochres is iron(III) oxide-hydroxide, known as limonite, which gives them a yellow colour. A range of other minerals may also be included in the mixture:Krivovichev V. G. Mineralogical glossary. Scientific editor :uk:Булах Андрій Глібович, A. G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kola Nut
The kola nut ( Yoruba: ''obi'', Dagbani: ''guli'', Hausa: goro, Igbo: ''ọjị'', Sängö: ''gôro,'' Swahili: ''mukezu'') is the seed of certain species of plant of the genus ''Cola'', placed formerly in the cocoa family Sterculiaceae and now usually subsumed in the mallow family Malvaceae (as subfamily Sterculioideae). These cola species are trees native to the tropical rainforests of Africa. Their caffeine-containing seeds are used as flavoring ingredients in various carbonated soft drinks, from which the name ''cola'' originates. Description About across, the kola nut is a nut of evergreen trees of the genus ''Cola'', primarily of the species ''Cola acuminata'' and '' Cola nitida''. ''Cola acuminata'', an evergreen tree about 20 meters in height, has long, ovoid leaves pointed at both the ends with a leathery texture. The trees have cream-white flowers with purplish-brown striations, and star-shaped fruit consisting of usually 5 follicles. Inside each follicle, ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hematite
Hematite (), also spelled as haematite, is a common iron oxide compound with the formula, Fe2O3 and is widely found in rocks and soils. Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of . It has the same crystal structure as corundum () and ilmenite (). With this it forms a complete solid solution at temperatures above . Hematite occurs naturally in black to steel or silver-gray, brown to reddish-brown, or red colors. It is mined as an important ore mineral of iron. It is electrically conductive. Hematite varieties include ''kidney ore'', ''martite'' ( pseudomorphs after magnetite), ''iron rose'' and ''specularite'' ( specular hematite). While these forms vary, they all have a rust-red streak. Hematite is not only harder than pure iron, but also much more brittle. The term ''kidney ore'' may be broadly used to describe botryoidal, mammillary, or reniform hematite. Maghemite is a polymorph of hematite (γ-) with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Oxide
An iron oxide is a chemical compound composed of iron and oxygen. Several iron oxides are recognized. Often they are non-stoichiometric. Ferric oxyhydroxides are a related class of compounds, perhaps the best known of which is rust. Iron oxides and oxyhydroxides are widespread in nature and play an important role in many geological and biological processes. They are used as iron ores, pigments, catalysts, and in thermite, and occur in hemoglobin. Iron oxides are inexpensive and durable pigments in paints, coatings and colored concretes. Colors commonly available are in the " earthy" end of the yellow/orange/red/brown/black range. When used as a food coloring, it has E number E172. Stoichiometries Iron oxides feature as ferrous ( Fe(II)) or ferric ( Fe(III)) or both. They adopt octahedral or tetrahedral coordination geometry. Only a few oxides are significant at the earth's surface, particularly wüstite, magnetite, and hematite. * Oxides of FeII ** FeO: ir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spinel
Spinel () is the magnesium/aluminium member of the larger spinel group of minerals. It has the formula in the cubic crystal system. Its name comes from the Latin word , a diminutive form of ''spine,'' in reference to its pointed crystals. Properties Spinel crystallizes in the isometric system; common crystal forms are octahedron, octahedra, usually Crystal twinning, twinned. It has no true Cleavage (crystal), cleavage, but shows an octahedral Parting (crystal), parting and a conchoidal fracture. Its Mohs scale of mineral hardness, hardness is 8, its specific gravity is 3.5–4.1, and it is transparent to opaque with a vitreous to dull Lustre (mineralogy), luster. It may be colorless, but is usually various shades of red, lavender (color), lavender, blue, green, brown, black, or yellow. Chromium(III) causes the red color in spinel from Burma. Some spinels are among the most famous gemstones; among them are the Black Prince's Ruby and the "Timur ruby" in the British Crown Jewels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fayalite
Fayalite (, commonly abbreviated to Fa) is the iron-rich endmember, end-member of the olivine solid solution, solid-solution series. In common with all minerals in the olivine, olivine group, fayalite crystallizes in the orthorhombic system (space group ''Pbnm'') with cell parameters ''a'' = 4.82 Å, ''b'' = 10.48 Å and ''c'' = 6.09 Å. Fayalite forms solid solution series with the magnesium olivine endmember forsterite (Mg2SiO4) and also with the manganese rich olivine endmember tephroite (Mn2SiO4). Iron rich olivine is a relatively common constituent of acidic and Alkaline earth metal, alkaline igneous rocks such as volcanic obsidians, rhyolites, trachytes and phonolites and plutonic quartz syenites where it is associated with amphiboles. Its main occurrence is in ultramafic volcanic and plutonic rocks and less commonly in felsic plutonic rocks and rarely in granite pegmatite. It also occurs in lithophysae in obsidian. It also occurs in medium-grade thermall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SEM-EDX
Energy-dispersive X-ray spectroscopy (EDS, EDX, EDXS or XEDS), sometimes called energy dispersive X-ray analysis (EDXA or EDAX) or energy dispersive X-ray microanalysis (EDXMA), is an analytical technique used for the elemental analysis or chemical characterization of a sample. It relies on an interaction of some source of X-ray excitation and a sample. Its characterization capabilities are due in large part to the fundamental principle that each element has a unique atomic structure allowing a unique set of peaks on its electromagnetic emission spectrum (which is the main principle of spectroscopy). The peak positions are predicted by the Moseley's law with accuracy much better than experimental resolution of a typical EDX instrument. To stimulate the emission of characteristic X-rays from a specimen a beam of electrons or X-ray is focused into the sample being studied. At rest, an atom within the sample contains ground state (or unexcited) electrons in discrete energy levels ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
