Checking the Purity of Gold

The tub is set below the pan so that al the material falling off the open end will fall into it. The washing pan may be positioned in a launder or trough about 2 or 3 feet long, with the tub placed below the far end off the launder to grab material as it falls off the end of it. If set up this way, the washing pan is steadier, and the ground is more simply set. The water is twisted on and the plunger adjusted to fire a small jet. A portion of gold concentrate is placed near the top of the washing pan. Using the water jet this material is cautiously moved towards one side of the washing pan. As the water moves this material the lighter dirt are carried down the washing pan and into the tub. Sooner the material access the side of the washing pan, the course of the jet of water is changed to push the material towards the other side. The material is worked back and forth across the pan in this way as long is required. As the material moves the lighter dirt are passed down the washing pan into the tub lower. Clearly some of the lighter grains of gold will be carried away by the jet of water, but they will be trapped and saved in the tub. This lighter gold will soon be fused.

Once no more impurities can be seen in the gold as it moves across the pan, the gold is washed up into a top corner and removed with a small spatula. Another portion of gold concentrate is located in the washing pan and the process is repeat .A sure capacity of technique is necessary in this washing process .One may very likely find himself re washing an full bath of concentrate several time before gaining an adequate technique.

Other than drying ,this is the final operation to make on the gold .All the lasting impurities must be detached at this time .After drying ,the results is the complete product ,placer gold. Combination is a method of alloying certain metals with mercury. The method has been know and used for ages. Mercury or quick silver is a heavy metal which is liquid at room temperature. Gold silver, cooper and zinc are simply alloyed with mercury, and the alloys which are created are called fusion. Other metals, such as iron, do not alloy mercury. The method of combination, consequently, can be used to divide gold, which is simply alloyed with mercury, from iron and the other adulteration in the concentrate which will not alloy with mercury.