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Gold Prospecting
Alluvial Gold Prospecting
New G14 River Sluice Box
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<blockquote data-quote="blisters" data-source="post: 283334" data-attributes="member: 4992"><p>Looks like not enough slope. Assuming you had let the sluice clear you shouldn't have that much light material above the first riffle and the mesh looks packed at the end so there is not enough water velocity to keep clearing the mesh and to push the material through. Water velocity will create the vortex required to fluidise the material in the mesh and behind the riffle. Look for the mesh clearing reasonably quickly, you might get an initial build up on the immediate riffle upside but this should dissipate reasonably quickly. The water level is hard to tell but looks a bit on the light side but ultimately it should clear the mesh and roll the larger stones. If you increase the slope you will in turn need more water but just enough to do the job. Stick your finger into the material behind the riffle when running it should not be packed and you should see the little stones dancing in the mesh, the heavies would have already sunk to the mat.</p><p>Jon</p></blockquote><p></p>
[QUOTE="blisters, post: 283334, member: 4992"] Looks like not enough slope. Assuming you had let the sluice clear you shouldn't have that much light material above the first riffle and the mesh looks packed at the end so there is not enough water velocity to keep clearing the mesh and to push the material through. Water velocity will create the vortex required to fluidise the material in the mesh and behind the riffle. Look for the mesh clearing reasonably quickly, you might get an initial build up on the immediate riffle upside but this should dissipate reasonably quickly. The water level is hard to tell but looks a bit on the light side but ultimately it should clear the mesh and roll the larger stones. If you increase the slope you will in turn need more water but just enough to do the job. Stick your finger into the material behind the riffle when running it should not be packed and you should see the little stones dancing in the mesh, the heavies would have already sunk to the mat. Jon [/QUOTE]
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Gold Prospecting
Alluvial Gold Prospecting
New G14 River Sluice Box
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