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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.
A piece of columbite–tantalite, size 6.0 × 2.5 × 2.1 cm. 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 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.
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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 ...
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 ...
[1] [2] However, both this and other routes of synthesis of precious metals via nuclear reactions is orders of magnitude removed from economic viability. Chlorine, sulfur and carbon (as coal) are cheapest by mass. Hydrogen, nitrogen, oxygen and chlorine are cheapest by volume at atmospheric pressure.
Precious metals are a distinct asset class that many investors use to hedge other investments they may hold, such as stocks and bonds. This is because precious metals are often considered "safe...