Columbite, also called niobite, niobite-tantalite and columbate, with a general chemical formula of (FeII,MnII)Nb2O6, is a black mineral group that is...

Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum...

Protectorates was founded. By the 1940s, Nigeria was a major producer of tin, columbite, and coal. The discovery of oil in 1956 hurt the mineral extraction industries...

chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral...

Coesite Coffinite Cohenite Colemanite Colimaite Collinsite Coloradoite Columbite (mineral group) Combeite Conichalcite Connellite Cooperite Copiapite Copper...

MnII)Ta2O6, a tantalum(V) mineral group close to that of columbite Coltan, a mixture of columbite and tantalite series Galaxite, MnIIAl2O4, a spinel mineral...

Coltan is the colloquial name for the mineral columbite-tantalum ("col-tan"). In the early 21st century coltan mining is associated with human rights...

the chemically similar niobium, mainly in the mineral groups tantalite, columbite and coltan. The chemical inertness and very high melting point of tantalum...

alternative to nickel. Niobium is often found in the minerals pyrochlore and columbite, hence the former name "columbium". Its name comes from Greek mythology:...

001 ft) above sea level in the Shere Hills range near Jos. Years of tin and columbite mining have left the area strewn with deep gorges and lakes. Bauchi State –...

specimens. In 1801, Hatchett analyzed a piece of columbite from the collection at the British Museum. Columbite turned out to be a very complex mineral, and...

Bruce Pearson 2013 About Time Jimmy Kincade 8 Minutes Idle Dan Thomas Columbite Tantalite Mark Short film 2014 I Am Soldier Sergeant / Trooper Mickey...

This confirmed that Charles Hatchett had discovered niobium in 1801 in columbite ore. Hatchett had named the new element "columbium", from the ore in which...

which specialises and has a monopoly in the production of the metal ore columbite. Drax is also the backer of the 'Moonraker' missile project being built...

Franklinite (Zn,Fe,Mn)(Fe,Mn)2O4 Chromite FeCr2O4 Chrysoberyl BeAl2O4 Columbite (Fe,Mn)(Nb,Ta)2O6 Hydroxide subgroup: Brucite Mg(OH)2 Manganite MnO(OH)...

Other industries include food processing and canning facilities, tin and columbite mining, and tourism in Yankari National Park and its Wikki Warm Springs...

natural gas, bauxite, iron ore, sandstone, lignite, clay, coal, tin and columbite. The zone has recently been plagued by crisis as the call for secession...

Niobium Nb Alloys, corrosion resistance Pyrochlore (Na,Ca)2Nb2O6(OH,F) and columbite ((FeII,MnII)Nb2O6) in granitic pegmatites Platinum Group Pt Dentistry...

minerals include quartz, feldspar, spodumene, amblygonite, tourmaline, columbite, cassiterite, topaz and beryl. Notable occurrences include Brazil; Ural...

later prompted Skynet's decision to use coltan, which is also referred as columbite–tantalite, for better heat resistance as its metal base as stated in Terminator:...

minerals found are albite, almandine, annite, beryl, aquamarine, biotite, columbite, elbaite, microcline, muscovite, and quartz. "Archived copy" (PDF). Archived...

Niobium 1801 C. Hatchett 1864 W. Blomstrand Hatchett found the element in columbite ore and named it columbium. In 1809, W. H. Wollaston claimed that columbium...

natural resources: gold cassiterite (tin ore) wolframite (tungsten ore) columbite-tantalite (tantalum and niobium ore) methane hydro-electric power coffee...

their claim for discovering element 43 continued. The group bombarded columbite with a beam of electrons and deduced element 43 was present by examining...

granite pegmatites with other rare minerals. It occurs in association with columbite, zircon, monazite, uraninite, aeschynite, magnetite, albite, topaz, beryl...

reported that they detected the element in platinum ore and in the mineral columbite. They also found rhenium in gadolinite and molybdenite. In 1928 they were...

to columbite and tantalite. Those minerals have the same chemical composition, but different crystal symmetry orthorhombic for tantalite or columbite and...

Technology Nasarawa The area's economic activity centers on the tin and columbite mining industry and farming. Nasarawa is a market center for the melon...

pyroxenes or amphiboles and often unusual minerals (such as chevkinite or columbite) comprising ordinarily incompatible elements that do not readily become...

kimberlites) may be considered to be eluvial deposits. Cassiterite and columbite-tantalite deposits also occur as residual or eluvial concentrations. The...