O QUE SIGNIFICA TANTALITE EM INGLÊS
Tantalite
O grupo mineral do tantalito é a principal fonte do elemento químico do tântalo. É quimicamente semelhante ao columbite, e os dois são agrupados como um mineral semi-singular chamado coltan ou "columbite-tantalite" em muitos guias minerais. No entanto, o tantalite tem uma gravidade específica muito maior do que Columbite. O tantalito rico em ferro é a tantalite mineral ou ferrotantalita e rico em manganês é a tantalite ou manganotantalite. A tantalita também é muito próxima da tapiolite. Esses minerais têm a mesma composição química, mas simetria de cristal diferente ortorrômica para tantalite e tetragonal para tapiolite. A tântala é preta para marrom, tanto na cor quanto na raia. Os tantalitos ricos em manganês podem ser castanhos e translúcidos.
definição de tantalite no dicionário inglês
A definição de tantalite no dicionário é um mineral acastanhado pesado que consiste em um óxido de tântalo de ferro e manganês em forma cristalina ortorrombiana: ocorre em granito grosso, muitas vezes com columbita, e é um minério de tântalo. Fórmula: 2O6.
10 LIVROS EM INGLÊS RELACIONADOS COM «TANTALITE»
Descubra o uso de
tantalite na seguinte seleção bibliográfica. Livros relacionados com
tantalite e pequenos extratos deles para contextualizar o seu uso na literatura.
1
Field Guide to Rocks & Minerals of Southern Africa
IMPORANT TANTALITE DEPOSITS IN ZIMBABWE In the Hurungwe district
tantalite was found with muscovite, amazonite feldspar, quartz, beryl and
microcline at the Apex mine; with gem-quality quartz, gem beryl, tourmaline (
schorl and ...
2
Hydrometallurgy in Extraction Processes
Of these, the important ones are niobite-tantalite as pegmatites, pyrochlore as
carbonatites, and niobium-tantalum-bearing cassiterite as placer deposits.
Niobite-tantalite represents an iso- morphous series of niobates and tantalates of
iron ...
C. K. Gupta, T. K. Mukherjee,
1990
3
A System of Theoretical and Practical Chemistry
m*. —. INCE the printing of the preceding sheets, a new metallic substance has
been announced by Mr. Ekeberg, to which he has given the name of Tantalite.
This metal exists in the mineral called Gadolinite, and also in a species of tin ore,
...
Friedrich Christian Accum,
1803
4
Mineral Deposits at the Beginning of the 21st Century
4 Nb-Ta BEARING MINERALS Columbite and tantalite form small subhedral to
eu- hedral dark blade-like bodies up to 3mm in size. They are irregularly
dispersed in muscovite, quartz and orthoclase. Growth zoning of patchy, regular
and ...
5
Extractive Metallurgy of Niobium
PEGMATITIC GRANITIC SYENITES CARBONATITES LATE STAGE
DIFFERENTIATION DISCRETE MINERALIZATION COLUMBITE - TANTALITE
PYROCHLORE KOLA PENINSULA, CIS BERNIC LAKE, USA PORTUGAL
AUSTRALIA LAKE ...
C. K. Gupta, A. K. Suri,
1993
6
Pegmatite investigations in Colorado, Wyoming and Utah 1942-1944
COLTXMBIUM AND TANTALUM PEGMATITES DISTRIBUTION The columbium
and tantalum minerals most abundant in the pegmatites of Colorado and
Wyoming are columbite-tantalite and microlite. Euxenite, samar- skite, betafite,
and f ...
John Bernard Hanley,
1950
7
Geological Survey Professional Paper
COLUMBIUM AND TANTALUM PEGMATITES DISTRIBUTION The columbium
and tantalum minerals most abundant in the pegmatites of Colorado and
Wyoming are columbite-tantalite and microlite. Euxenite, samar- skite, betafite,
and f ...
High Quality Content by WIKIPEDIA articles! Tantalite, is a mineral group that is close to columbite. The two are often grouped together as a semi-singular mineral called coltan or "columbite-tantalite" in many mineral guides.
Jesse Russell, Ronald Cohn,
2012
Originally published by Melcher, Frank, Graupner, Torsten, Henjes-Kunst,
Friedhelm, Oberthiir, Thomas, A. Sitnikova, Maria, G'abler, Eike et al. (2008),
Analytical Fingerprint of Columbite-Tantalite (Coltan) Mineralisation in
Pegmatites — Focus ...
10
U.S. Geological Survey professional paper
TANTALITE (Fe,Mn)(Ta,Nb)20, Orthorhombic. Part of columbite-tantalite
isomorphous series, Ta> Nb; includes ferrotantalite with Fe>Mn and man-
ganotantalite with Mn>Fe. Ta2Os=86.1 (theoretical end member). Found in
granitic pegmatites, ...
Geological Survey (U.S.),
1969
10 NOTÍCIAS NAS QUAIS SE INCLUI O TERMO «TANTALITE»
Conheça de que se fala nos meios de comunicação nacionais e internacionais e como se utiliza o termo
tantalite no contexto das seguintes notícias.
Kennedy Ventures directors resign as company's transition continues
Tantalite producer Kennedy Ventures said Peter Redmond and Colin Weinberg ... was taken as part of its planned transition to focus on the tantalite industry. «DIGITALLOOK, jul 15»
Raw Material Supply Chain for Passive Components: Global Market …
2.7 Tantalite: The tantalite metal used in the production of tantalum capacitors comes from Central Africa (2015). Other known tantalite resources are located in ... «TTI MarketEye, jul 15»
Premier African acquires exploration rights over tenements in Benin
Artisanal mining for tantalum ore (tantalite or coltan) and coloured gemstones, such as tourmaline and aquamarine, has been undertaken in the area for about ... «Proactive Investors UK, jul 15»
Kennedy Ventures raises £1.4m in placing to fund Tantalite Valley …
The company, which is focused on tantalite production in Namibia through its 75% holding in African Tantalum, said the new shares issued will represent around ... «DIGITALLOOK, jul 15»
Pilbara makes a play for Tabba Tabba
The mine is being developed under a mining and offtake agreement with GAM, which includes a fixed price five-year offtake for tantalite concentrate. The project ... «Creamer Media's Mining Weekly, jul 15»
Kennedy-Ventures заручилась закупочным соглашением для …
Kennedy-Ventures заручилась закупочным соглашением для Tantalite Valley ... контрагентом о покупке всей продукции с рудника Tantalite Valley Mine. «МеталТорг, jul 15»
Musk smelling a winner with his assault on battery
Pilgangoora will produce both tantalite (tantalum oxide) and lithium, with an exploration target of ... 60 million tonnes, with good grades of tantalite and lithium. «Herald Sun, jun 15»
Tantalus Rare Earths Is Planning For Production Of 10000 Tonnes …
“They were mainly looking for tantalite”, says Thomas. That changed when Tantalus took over the ground in 2008, raised some money in an Aim listing two years ... «Minesite, fev 15»
Magnum Mining and Exploration farms out stake in Namibia tantalite …
Magnum Mining and Exploration (ASX:MGU) has completed its sell-down of a 60% interest in the Tantalite Valley Project in Namibia to African Tantalum. «Proactive Investors Australia, fev 15»
Kennedy Ventures: African Tantalum Closer To Tantalite Valley Deal
Aftan has a conditional deal with Magnum Mining and Exploration Ltd to acquire 60% of the Tantalite Valley project in Namibia, a mine which it is intended will ... «London South East, dez 14»