Search results
Results from the WOW.Com Content Network
Australia was the main producer of tantalum prior to the 2010s, with Global Advanced Metals (formerly known as Talison Minerals) being the largest tantalum mining company in that country. They operate two mines in Western Australia, Greenbushes in the southwest and Wodgina in the Pilbara region.
Pages in category "Tantalum minerals" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. A. Achalaite; B. Béhierite;
Tantalum minerals (1 C, 21 P) Tantalum(V) compounds (6 P) Pages in category "Tantalum compounds" The following 16 pages are in this category, out of 16 total.
Tantalum pentoxide, also known as tantalum(V) oxide, is the inorganic compound with the formula Ta 2 O 5. It is a white solid that is insoluble in all solvents but is attacked by strong bases and hydrofluoric acid. Ta 2 O 5 is an inert material with a high refractive index and low absorption (i.e. colourless), which makes it useful for coatings ...
New minerals approved by the International Mineralogical Association (IMA-CNMNC) are allocated unique symbols consistent with the main listing. New symbols are announced in the newsletters of the IMA-CNMNC. An updated "mineral symbol picker" list [7] is also available for checking on the availability of symbols prior to submission for approval.
Category: Minerals by element. ... Tantalum minerals (1 C, 21 P) Tellurium minerals (2 C, 4 P) Thallium minerals (18 P) Thorium minerals (21 P) Tin minerals (17 P, 1 F)
Natural tantalum (73 Ta) consists of two stable isotopes: 181 Ta (99.988%) and 180m Ta (0.012%). There are also 35 known artificial radioisotopes, the longest-lived of which are 179 Ta with a half-life of 1.82 years, 182 Ta with a half-life of 114.43 days, 183 Ta with a half-life of 5.1 days, and 177 Ta with a half-life of 56.56 hours.
Today [when?] it is a name of a group of oxide minerals of a similar stoichiometry having tantalum prevailing over titanium and niobium. The microlite group belongs to a large pyrochlore supergroup that occurs in pegmatites and constitutes an ore of tantalum. It has a Mohs hardness of 5.5 and a variable specific gravity of 4.2 to 6.4.