what is columbite tantalite group mean

Tantalite Value, Price, and Jewelry Information ...

Tantalite Value, Price, and Jewelry Information Rob Lavinsky, iRocks.com – CC-BY-SA-3.0 [ CC-BY-SA-3.0 ], via Wikimedia Commons Tantalite is too dark to be of use as a faceted gem but is sometimes cut as a collector curiosity, either faceted or in cabochons.

Tantalite: Tantalite mineral information and data.

An obsolete group name for minerals with the general formula (Mn,Fe)(Ta,Nb) 2 O 6, equivalent to the Tantalite-(Fe)-Tantalite-(Mn) Series.Generally mangan-dominant members are more abundant in nature. Many specimens called tantalite actually belong to the columbite series or tapiolite series. Visit gemdat.org for gemological information about Tantalite.

Tantalum And Tantalite Buyers And Mining Investors

What China and the DRC Mean for Tin Investment, Tantalum ..... is a byproduct of tin mining and ... What China and the DRC Mean for Tin Investment, Tantalum and Conflict ... the mineral from which niobium and tantalite are ...

coltan columbite global - perkinspreschool.com

Aug 23, 2017· The columbite-tantalite mineral group (Figure 1) is the .. Figure 3. Map showing the global distribution of niobium and tantalum mines, deposits and major occurrences. .. Illegally traded coltan ore may end up in consumer elec-. Contact Us.

Coltan - definition of coltan by The Free Dictionary

Define coltan. coltan synonyms, coltan pronunciation, coltan translation, English dictionary definition of coltan. n. See columbite-tantalite. n a metallic ore found esp in the E Congo, consisting of columbite and tantalite Noun 1. coltan - …

Tantalite - Wikipedia

The mineral group tantalite [(Fe, Mn)Ta 2 O 6] is the primary source of the chemical element tantalum. It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite…

Columbite Tantalite: a film that fuses Congo's past and ...

Columbite Tantalite: a short film by Chiwetel Ejiofor – video This short film written and directed by Chiwetel Ejiofor is a postcolonial parable about the west's hunger for African mineral ...

Columbite synonyms, columbite antonyms - FreeThesaurus.com

It's coltan, short for the minerals it contains - columbite and tantalite - and it's a key component in the manufacture of mobile phones and other electronic equipment: it was a low coltan supply that led to a shortage of PlayStation2 platforms in 2000.

Columbite | Article about Columbite by The Free Dictionary

Tantalite is the most widespread tantalum mineral and forms a series with the mineral columbite. Tantalisina Tantalum He enthusiastically told me about a fabulous mine there that had 3-foot fluorite crystals and sprays of columbite and tantalite in the walls of the mine.

TIC - Frequently Asked Questions (FAQ) - tanb.org

'Coltan' is the abbreviated name for 'columbite–tantalite', a group of dense, black metallic ores that contain both niobium minerals (columbite) and tantalum minerals (tantalite) in varying proportions.

Columbite - Wikipedia

Columbite, also called niobite, niobite-tantalite and columbate [(Fe, Mn)Nb 2 O 6], is a black mineral group that is an ore of niobium. It has a submetallic luster and a …

What does columbite-tantalite mean? definition and meaning ...

COLUMBITE-TANTALITE Dictionary entry overview: What does columbite-tantalite mean? • COLUMBITE-TANTALITE (noun) The noun COLUMBITE-TANTALITE has 1 sense:. 1. a valuable black mineral combining niobite and tantalite; used in cell phones and computer chips Familiarity information: COLUMBITE-TANTALITE used as a noun is very rare.

columbite mining individual - mountainboards.co.za

Apr 20, 2018· Columbite Tantalite: a film that fuses Congo's past and present . Dec 11, 2013 And its story reaches back directly to Congo, where the mining industry In full, coltan's name is columbite-tantalite, after Tantalus, the figure in

Coltan | Definition of Coltan by Merriam-Webster

Coltan definition is - a dull black ore that consists of a mixture of columbite and tantalite and is a minor source of tantalum. a dull black ore that consists of a mixture of columbite and tantalite and is a minor source of tantalum…

Columbite | Define Columbite at Dictionary.com

Columbite definition, a black, crystalline mineral, iron niobate, (Fe, Mn)Nb2O6, the principal ore of niobium, an end member of a series of solid solutions in which manganese and tantalum combine to form tantalite. See more.

Tantalite - Wikipedia

The mineral group tantalite [(Fe, Mn)Ta 2 O 6] is the primary source of the chemical element tantalum. It is chemically similar to columbite, and the two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral guides.

columbite | Definition of columbite in English by …

Definition of columbite in English: columbite. noun mass noun. A black mineral, typically occurring as dense tabular crystals, consisting of an oxide of iron, manganese, niobium, and tantalum. It is the chief ore of niobium. Example sentences 'It occurs most commonly in the minerals columbite, tantalite, and microlite.' ...

Coltan - Wikipedia

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. The niobium-dominant mineral in coltan is columbite (after niobium's original American name columbium ), and the tantalum-dominant mineral is tantalite .

Columbite-(Fe) Mineral Data

Comments: Dark grains of columbite-(Fe) wtth small brown grains of fluorcarbonates of LREE. Corrected identificaton by Pavel M. Kartashov who analyzed this occurrence of 'chagbaiite'. Corrected identificaton by Pavel M. Kartashov who analyzed this occurrence of …

What Are Conflict Minerals? | Source Intelligence

The term "conflict minerals" is defined as columbite-tantalite, also known as coltan (from which tantalum is derived); cassiterite (tin); gold; wolframite (tungsten); or their derivatives; or any other mineral or its derivatives determined by the Secretary of State to be financing conflict in the Democratic Republic of the Congo or an adjoining country.

Columbite - CreationWiki, the encyclopedia of creation science

Columbite also known as niobite or niobite-tantalite is the most widespread niobium mineral.Columbite was first discovered in Haddam, Connecticut. It makes for one of the most important ores of the industrially used metals. Columbite is a black mineral group.

Columbite: The mineral columbite-tantalite information and ...

Columbite forms a solid solution series with Tantalite known as the Columbite-Tantalite series. Columbite is the niobium-rich member, and Tantalite is the tantalum-rich member. Columbite is named after its niobium content, which was previous known as columbium prior to its renaming.

What does tantalum mean? definition, meaning and ...

columbite; niobite (a black mineral that is an ore of niobium and tantalum) tantalite (a mineral consisting of tantalum oxide of iron and manganese that occurs with niobite or in coarse granite; an ore of tantalum)

Tantalum | Define Tantalum at Dictionary.com

a gray, hard, rare, metallic element occurring in columbite and tantalite and usually associated with niobium: used, because of its resistance to corrosion by most acids, for chemical, dental, and surgical instruments and apparatus.

What is columbite-tantalite - Answers.com

Sears uses columbite tantalite for the appliance uses because they are an appliance store. You can probably find traces of the mineral in their washing-machine's metal and th … eir oven's metal ...

Columbite Ore Mining And Processing In Nigeria, The …

Columbite, also called niobite, niobite-tantalite and columbite [(Fe, Mn) Nb2O6], is a black mineral group that is an ore of niobium. It has a submetallic luster and a high density and is a niobate of iron and manganese.

Columbite Ore Mining And Processing In Nigeria, The Pre ...

Columbite, also called niobite, niobite-tantalite and columbite [(Fe, Mn) Nb2O6], is a black mineral group that is an ore of niobium. It has a submetallic luster and a …

Columbite-tantalite - definition of columbite-tantalite by ...

Define columbite-tantalite. columbite-tantalite synonyms, columbite-tantalite pronunciation, columbite-tantalite translation, English dictionary definition of columbite-tantalite. ) n. A dull black aggregate of the minerals columbite and tantalite, mined as a source of niobium and tantalum.