Whats so good about Miners Moss?
Miners moss is your "active layer" underneath your riffles which create a slow slurry area for mineral transfer. The use of miners moss is widely accepted as the best material to trap gold. In order for effective mineral separation to occur we need to create the right environment for heavies to settle and the lighter materials to move through our capture system or sluice box. By using riffles to create eddies or vortexes we create an environment that pushes new material into the miners moss whilst also removing light sediments.
Miners moss will not work perfectly by itself without being dialed in with the correct angle of your sluice box and the correct water flow to back it up. Too slow water flow means you will have build up of light material which will compact and all your gold will flow straight out too much and your gold will likely bound right out as well. Running your sluice box too level will also cause buildup, the trick it to try to measure your results by varying feed rates, angles and pitch.
Miners moss backing
Because miners moss is designed to allow light material to move through and out of our sluice box or highbanker we need to create an additional removable capture layer to hold the very tiny light gold that will settle on the bottom.
We do this by adding a layer of V ribbed matting for more on this follow the link.
Here is some gold I got yesterday in Creswick using the gold rat for a few hours just under a gram.