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Gold Prospecting
Do It Yourself (DIY) Projects
Building a large capacity High-banker - Instructional video
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<blockquote data-quote="Gold miner" data-source="post: 6959" data-attributes="member: 262"><p>Hey Jono,</p><p>I know you are asking Wal, but if I may put my two bobs worth in????</p><p></p><p>See how that walkway mesh is vertical in respect to the waterflow? </p><p></p><p>What riffles are all about, is creating a high pressure point in the water flow at the front of the riffle, then as the water falls over the top of the riffle, a low pressure point occurs. Gold has high specific gravity, so should fall behind that riffle, where there is little pressure to keep the gold moving.</p><p>Then a good mat (moss) should hold that piece there, when further heavies, not necessarily gold, come along and try to displace it. (displacement theory).</p><p></p><p>Many people believe that the gold gets 'stopped' at the front on the riffle, that is not true.</p><p></p><p>Now I am not saying that your riffles wont work, no way... but you will be prone to everything in that launder stopping behind a vertical surface, clogging up, and then you will have no riffles, gold over the end...</p><p></p><p>My opinion mate, dont wanna pee on your fire!!</p><p>Wal might have a totally differant view, then you can make your own mind up!</p><p></p><p>Cheers,</p><p>GM</p></blockquote><p></p>
[QUOTE="Gold miner, post: 6959, member: 262"] Hey Jono, I know you are asking Wal, but if I may put my two bobs worth in???? See how that walkway mesh is vertical in respect to the waterflow? What riffles are all about, is creating a high pressure point in the water flow at the front of the riffle, then as the water falls over the top of the riffle, a low pressure point occurs. Gold has high specific gravity, so should fall behind that riffle, where there is little pressure to keep the gold moving. Then a good mat (moss) should hold that piece there, when further heavies, not necessarily gold, come along and try to displace it. (displacement theory). Many people believe that the gold gets 'stopped' at the front on the riffle, that is not true. Now I am not saying that your riffles wont work, no way... but you will be prone to everything in that launder stopping behind a vertical surface, clogging up, and then you will have no riffles, gold over the end... My opinion mate, dont wanna pee on your fire!! Wal might have a totally differant view, then you can make your own mind up! Cheers, GM [/QUOTE]
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Gold Prospecting
Do It Yourself (DIY) Projects
Building a large capacity High-banker - Instructional video
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