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a sluice box is one of the easiest ways to prospect for
gold. You do not need much equipment to successfully operate
a sluice. Sluices are run by nature, all you need is gravity
so unless your in outer space then you should have no
problems operating a sluice box. Another great thing about
them, there are no motors. All you hear are the sounds
around you and the water as it flows over the riffles
and creates small eddies allowing the heavier gold to
settle. They are a great way to move quite a bit of material
with minimal efforts.
Sluice boxes were designed to get gold nuggets. The
whole design was taken from the way gold is found naturally
so in order to understand how a sluice box works we
need to figure out how gold moves up and down streams
and rivers naturally.
Gold as I am sure you know is heavy. It is heavier
than the rocks and just about everything else that occupies
a stream or riverbed. So gold will sink down to the
bottom. Being that gold is so heavy it can take quite
a bit of power to move gold nuggets down a stream. So
what moves gold down the riverbed? How about a spring
thaw or some heavy rains. Anything that gets your favorite
stream or riverbed really flowing fast. The more water
pushing through and the narrower the stream or river,
the more likely it will pick up gold and hold it in
suspension until the flow ebbs. You can scout a good
area when the river or stream is low, just look for
deep pockets where the current slows or even backs up
and forms whirlpools, these are the places that the
gold will drop out of suspension and sink towards the
bottom.
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