Precious Metals Magazine
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Placer Mining: Three Methods Used To Mine Placer Gold
The word placer, as will be found throughout here, is derived from the same Spanish word which means "sandbank". It specifically refers to an alluvial deposit of detrital material, such as gravel, which contains particles of precious chemical elements.
Iridium: Most Corrosive Resistant Precious Metal
Iridium is a transition metal belonging to the platinum group. Its main characteristics are that of being hard and brittle and of being silvery-white in appearance. It ranks next to osmium in being the densest element. As to its main property, this is best expressed in its being considered the most corrosive resistant of all the precious metals. In fact, this is shown even in temperatures of as high as 2000°C (3632°F or 2273.15°K).
Silver As An Investment: Ways Of Investing In Silver
Silver is like three other precious metals (gold, palladium, and platinum) in terms of being regarded as an investment commodity. In fact, this precious metal has been regarded as a form of currency and a store of value for over four centuries.