Search results
Results from the WOW.Com Content Network
The metal is highly biocompatible [71] and is used for body implants and coatings, therefore attention may be focused on other elements or the physical nature of the chemical compound. [ 89 ] People can be exposed to tantalum in the workplace by breathing it in, skin contact, or eye contact.
A native metal is any metal that is found pure in its metallic form in nature. [1] [2] Metals that can be found as ... tantalum, tellurium, and other metals have been ...
The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), [1] are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals. Compounds containing rare ...
As a result of tantalum mining and wars, societies in the eastern regions of the Congo are experiencing heightened physical and economic insecurity, [120] [121] health problems and human-rights violations. In the Ituri region, a violent conflict is occurring between the Lendu and the Hema tribes. Analysts have determined that the conflict has ...
HLM Identifies Strong Tantalum Grades Up to 192 ppm Ta 2 0 5 Over 14 Meters on the Pakeagama Rare Metals Project in Northwestern Ontario SUDBURY, Ontario--(BUSINESS WIRE)-- Houston Lake Mining Inc ...
The best known precious metals are the precious coinage metals, which are gold and silver. Although both have industrial uses, they are better known for their uses in art , jewelry , and coinage. Other precious metals include the platinum group metals: ruthenium , rhodium , palladium , osmium , iridium , and platinum , of which platinum is the ...
A noble metal is ordinarily regarded as a metallic element that is generally resistant to corrosion and is usually found in nature in its raw form. Gold , platinum , and the other platinum group metals ( ruthenium , rhodium , palladium , osmium , iridium ) are most often so classified.
The mineral group tantalite [(Fe, Mn)Ta 2 O 6] is the primary source of the chemical element tantalum, a corrosion (heat and acid) resistant metal.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.