From our mines in DRC, we do extract gold and refine gold which is the most famous of all precious metals. Widely sought after throughout the world for both its investment qualities and industrial properties. Gold has traditionally served three functions: as a monetary instrument, a financial asset, and a raw material mostly used in jewelry and decorative objects. As an investment, gold is usually viewed as a financial asset that maintains its value during times of political, social or economic distress. In this way, gold provides individual and institutional investors alike with a portfolio safety net against sharp downward spikes in complementary assets such as stocks and bonds, significant rises in inflation, and volatile currency exchange rates.
Copper is an international traded commodity and its price is effectively determined by the major metals exchanges-the London Metal Exchange[LME],the New York Commodity Exchange[COMEX],and the Shanghai Futures Exchange{SHFE].Prices on these exchanges generally reflect the worldwide balance of copper supply and demand, and can be volatile and cyclical. In general, demand for copper reflects the rate underlying world economic growth,particulary in industrial production and construction. According to Wood Mackenzie, a widely followed independent metals market consultant, copper’s end-use markets[and their estimated shares of total consumption]are construction[31 percent],consumer products[24%],electrical applications[24%],transportation[11%]and industrial machinery[10%].
This is a hard rare metal and is found naturally on Earth almost exclusively in chemical compounds. It was identified as a new element in 1781,and first isolated as a metal in 1783.Its important ores include wolframite and scheelite.The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all the elements discovered, melting at 3422 °C[6192°F ,3695K].It has the second highest point at 5930 °C [10706°F, 6203 K] Its high density is 93.3 times that of water, comparable to that of uranium and gold,and much higher[about 1.7 times] than that of lead. Poly crystalline tungsten is intrinsically brittle and hard material, making it difficult to work.Pure single crystalline tungsten is more ductile, and can be cut with a hard-steel hacksaw.
At our mines site which stretches 10Km,we do mine diamond and is sold by the carat[shown as ct] which is actually a unit of weight,though most think of a carat in terms of size.The world “carat” comes from the “carob” seed,the original unit of measure for diamond traders.Today,a carat is equal to exactly the weight of a paper clip].Carat weight is unrelated to the similar sounding karat,which refers to gold’s purity.
The mineral group tantalite [(Fe, Mn)Ta2O6] 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.However, tantalite has a much greater specific gravity than columbite (8.0+ compared to columbite’s 5.2). Iron-rich tantalite is the mineral tantalite-(Fe) or ferrotantalite and manganese-rich is tantalite-(Mn) or manganotantalite.
is a crystalline boron silicate mineral compounded with elements such as aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmaline is classified as a semi-precious stone and the gemstone comes in a wide variety of colors.
