Columbite, also called niobite, niobite-tantalite and columbate, with a general chemical formula of (FeII,MnII)Nb2O6, is a black mineral group that is...
26 KB (2,818 words) - 11:35, 22 May 2024
Coltan (redirect from Columbite-tantalite)
Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum...
64 KB (5,566 words) - 16:35, 3 May 2024
chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral...
6 KB (439 words) - 21:38, 10 January 2024
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...
15 KB (1,755 words) - 07:26, 2 May 2024
Coesite Coffinite Cohenite Colemanite Colimaite Collinsite Coloradoite Columbite (mineral group) Combeite Conichalcite Connellite Cooperite Copiapite Copper...
41 KB (2,732 words) - 20:21, 2 June 2024
Coltan is the colloquial name for the mineral columbite-tantalum ("col-tan"). In the early 21st century coltan mining is associated with human rights...
23 KB (3,019 words) - 09:58, 6 March 2024
the chemically similar niobium, mainly in the mineral groups tantalite, columbite and coltan. The chemical inertness and very high melting point of tantalum...
53 KB (6,121 words) - 07:36, 19 May 2024
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...
2 KB (232 words) - 12:21, 27 January 2024
alternative to nickel. Niobium is often found in the minerals pyrochlore and columbite, hence the former name "columbium". Its name comes from Greek mythology:...
84 KB (8,206 words) - 11:54, 29 May 2024
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...
7 KB (508 words) - 15:42, 15 December 2023
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...
17 KB (1,673 words) - 13:40, 8 April 2024
Bruce Pearson 2013 About Time Jimmy Kincade 8 Minutes Idle Dan Thomas Columbite Tantalite Mark Short film 2014 I Am Soldier Sergeant / Trooper Mickey...
11 KB (622 words) - 06:24, 12 April 2024
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 –...
43 KB (3,695 words) - 12:55, 4 June 2024
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...
8 KB (745 words) - 16:43, 23 April 2024
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...
13 KB (1,578 words) - 20:15, 24 February 2024
minerals include quartz, feldspar, spodumene, amblygonite, tourmaline, columbite, cassiterite, topaz and beryl. Notable occurrences include Brazil; Ural...
10 KB (965 words) - 21:33, 18 January 2024
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)...
18 KB (1,957 words) - 03:19, 23 August 2023
granite pegmatites with other rare minerals. It occurs in association with columbite, zircon, monazite, uraninite, aeschynite, magnetite, albite, topaz, beryl...
5 KB (354 words) - 17:26, 19 January 2024
Other industries include food processing and canning facilities, tin and columbite mining, and tourism in Yankari National Park and its Wikki Warm Springs...
32 KB (3,031 words) - 08:26, 1 June 2024
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...
131 KB (4,821 words) - 19:14, 4 May 2024
Year Product Volume (in tons) 2008 Columbite-tantalite 65.196...
6 KB (638 words) - 02:56, 14 April 2024
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...
5 KB (486 words) - 22:32, 6 October 2023
Niobium Nb Alloys, corrosion resistance Pyrochlore (Na,Ca)2Nb2O6(OH,F) and columbite ((FeII,MnII)Nb2O6) in granitic pegmatites Platinum Group Pt Dentistry...
60 KB (5,466 words) - 20:18, 10 March 2024
natural resources: gold cassiterite (tin ore) wolframite (tungsten ore) columbite-tantalite (tantalum and niobium ore) methane hydro-electric power coffee...
16 KB (1,363 words) - 11:45, 26 May 2024
pyroxenes or amphiboles and often unusual minerals (such as chevkinite or columbite) comprising ordinarily incompatible elements that do not readily become...
16 KB (2,040 words) - 00:38, 27 February 2024
Nigeria's natural resources include but are not limited to petroleum, tin, columbite, iron ore, coal, limestone, lead, zinc, natural gas, hydropower, and arable...
56 KB (3,750 words) - 11:22, 26 May 2024
that they had detected the element in platinum ore and in the mineral columbite. They also found rhenium in gadolinite and molybdenite. In 1928 they were...
43 KB (4,932 words) - 09:20, 19 May 2024
kimberlites) may be considered to be eluvial deposits. Cassiterite and columbite-tantalite deposits also occur as residual or eluvial concentrations. The...
4 KB (439 words) - 18:28, 5 March 2024
their claim for discovering element 43 continued. The group bombarded columbite with a beam of electrons and deduced element 43 was present by examining...
68 KB (7,647 words) - 20:41, 30 May 2024
sedimentary basins, as well as reserves of gold, lead, zinc, tantalite, columbite, coal and tin. The oldest Precambrian rocks in Nigeria likely formed during...
12 KB (1,696 words) - 10:27, 26 February 2023