Übersetzung für 'columbite' von Englisch nach Deutsch

columbite

Kolumbit {m}mineral.

columbite [(Fe,Mn)(Nb,Ta)2O6]

Columbit {m} [Mischkristall]mineral.

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columbite-(Fe) [FeNb2O6]

Columbit-(Fe) {m}mineral.

columbite-(Mg) [(Mg,Fe,Mn)(Nb,Ta)2O6]

Columbit-(Mg) {m}mineral.

columbite-(Mn) [(Mn,Fe)(Nb,Ta)2O6]

Columbit-(Mn) {m}mineral.

• The government reports that evidence of the presence of coltan (columbite-tantalite, a tantalum ore) has been found near Aconibe and Akamiken.
• Tantalum, always together with the chemically similar niobium, occurs in the minerals tantalite, columbite and coltan (a mix of columbite and tantalite).
• Columbite has the same composition and crystal symmetry (orthorhombic) as tantalite.
• In 1801, Hatchett analyzed a piece of columbite from the collection at the British Museum.
• Coltan (short for columbite–tantalites and known industrially as tantalite) is a dull black metallic ore from which the elements niobium and tantalum are extracted.

• It was first described from complex crystals and as broken fragments in the disintegrated material of a granitic vein at Stoneham, Oxford County, Maine where it is associated with feldspar, smoky quartz, beryl and columbite.
• In 1925 they reported that they detected the element in platinum ore and in the mineral columbite.
• (PNN) have been prepared by the columbite precursor method.
• Other pegmatites of the batholith have been mined for quartz, feldspar and beryl plus lesser amounts of columbite and tantalite.
• The mine was run by Géomines from 1915 to the mid 1980s, producing 140,000 tons of cassiterite (tin) and 10,000 tons of columbite-tantalite (coltan).

• Its production involves leaching tantalum ores, such as columbite and tantalite, with hydrofluoric acid and sulfuric acid to produce the water-soluble hydrogen pentafluorotantalate.
• Cassiterite, columbite, and tantalite are some of the mineral resources found in Egbe.
• The area's economic activity centers on the tin and columbite mining industry and farming.
• There is mineral availability in the area, such as tantalite, columbite, cassiterite, kaolin, and granite.
• Tapiolite is very close to "columbite" and "tantalite".

• In 1925 in Germany, Walter Noddack, Ida Tacke, and Otto Berg reported that they detected the element in platinum ore and in the mineral columbite.
• Uranium and thorium were in the monazite grains; rare earths were in columbite and euxenite.