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they had to separate dust and rock crumbs
Smelting.
You could separate gold from other metals by gravity, by melting, or by chemical means.
The term "long tom" was for a type of very long sluice box used to separate [lacer gold from the base rock.
cement
The full answer depends on which gold rush you're talking about. But if you're referring to the most famous gold rush in America that occurred in 1849 in California, then most of the miners were prospecting for placer gold (as opposed to hard rock mining, where the gold is trapped inside the rock). For placer mining, the miners mostly used: - picks and shovels (to loosen and gather gold-bearing dirt for processing) - gold pans (to separate gold from the dirt) - sluice boxes (to separate gold from the dirt) - rocker boxes (to separate gold from the dirt) For hard rock mining, a lot of other equipment is needed, such as dynamite, to get the ore, crushers to crush the ore, mules and mining carts to haul the ore, mining hats and carbide lanterns, etc.
you use an ore to separate gold from impuritties
Gold does not occur as ores!It is naturally pure metal when extracted and doesnot need to be separated as it does ot have any chemicals.Yes,if rocks or debris is attached,then it may be crushed and the worthless rock may be removed.
Green gold is an alloy consisting only of gold and silver, which produces a somewhat greenish-yellow color. 18-karat green gold consists of 75% gold and 25% silver.
the rock is hader
You can separate gold from sodium gold chloride by adding zinc powder to the sodium gold chloride and heating the mixture. Then you will be left with just gold.
what is difference in a gold ring and rock salt