subject: Mining Machinery Assists To The Mining Industry [print this page] Mining machinery assists to the mining industry
With the high market prices of gold and silver in recent months, a number of people are wondering about where these metals come from. Gold and silver metals are obtained from a variety of different types of rock ores. Most people think of gold nuggets and such as the source of gold, but the truth is that very little of the new gold produced comes from nuggets - nearly all newly mined gold comes from ores mined from the natural hard rocks that contain gold in tiny, even microscopic particles. This article is created to describe what these ores are like. Gold is found widely diffused in nature even though it is one of the scarcer metals in the earth's crust. Very commonly, gold occurs as the native metal encased within a mineral known as quartz. Sometimes the gold is in a finely divided state, sometimes in particles of considerable size, as nuggets, grains, scales, plates, threads and wires in quartz rock. It occurs also in a finely divided state disseminated through schistose rocks, slates and some sedimentary rocks like limestone. In these cases the rock has been altered by the flow of heated and mineralized waters, often resulting in the impregnation of large amounts of rock with silica, iron and a certain amount of gold. Sometimes the silicified rock even replaces much if not all of the original country rock. While historically speaking vein deposits were the most productive, these disseminated deposits currently yield much of the worlds gold ore.
The mining industry in many developing and third world countries has, over the last ten to fifteen years, undergone a great growth period. New methods of finding minerals have been discovered and it has caused old mines to be re-opened and new mines to begin. Mining involves a fairly simple principle of extracting minerals from the earth and refining this raw material to finish with an end product. These products, such as gold, silver, iron ore, copper or lead, are all very valuable in our world at present. The gold prices today are at record highs. This leads to many new mine companies starting up or old ones to go through rapid growth periods.
The primitive mining methods existent thousands of years ago, have now been replaced by new methods involving machines. People used to dig away at a mountain by hand or by use of small hand implements. Then came the use of horses and animals as power, which made the work easier and more feasible. This was still not such a big deal until the invention of the combustion engine and therefore machines specifically designed for mining. Once this happened it changed mining dramatically.
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