Post by Admin on Sept 12, 2008 15:48:22 GMT 10
From: KiwiJW2 (Original Message) Sent: 28/07/2008 8:40 PM
Hi there Mogo & all,
It sort of is like loaming isnt it, as you are trying to find the heavier concerntrations of material, gold being the target.
In loaming you are chasing specs of gold starting off from a wide base showing colours & working from left to right boundries & back from right to left boundries until you are getting no more colours in either boundry direction. The boundry being where you are getting no more colours in either direction Working your way up hill (generaly up hill) with the outside boundries of gold colours getting narrower & narrower until you reach a point where it is like the tip of a triangle or pyramid, beyond this point you will be getting no more colours.
Actualy as you reach this point the gold should be getting more chunky & shoty as it is freshly broken away from its parent reef or source & hasnt travelled very far & had the wearing, smoothing effects of weathering or rubbing.
Once the gold cuts out you start to dig down if you cant see any intrusion of gold bearing material protruding above the surface (because this intrusion is the material carrying the gold, not the country rock, & this intrusion material is also your indicator material). Usualy a quartz reef or "blow" as they are called, where it is breaking through the surface of the surrounding country rock. Sometimes the gold bearing associated rock (quartz reef) isnt breaking through the surface & this is the true art of loaming, to find the source of where the gold is coming (sheading) from when you cant visibly see the reef protruding above the surface.
Sampling to find a gold path in a dried up stream is very similar to loaming in this respect.
It is all about sampling sampling sampling to stay on the gold path. As I said in the indicator post, sampling may be time consuming but you need to do it to find & stay on the gold path. Once the path is found, & you follow it, you will be shoveling material with the best concerntrations of gold, & smiling from ear to ear.
Dredging is the same. First you need to find some gold by sampling. Then you need to find the left & right boundries which can only be done by punching a heap of sampling holes, once gold is found & the left & right boundries are found you then need to go ahead & find how far forward the gold boundry goes up stream & then drop back & find where the gold peters out down stream.
Once the down stream boundry is found you now know the gold bearing area that you can now systematicly clean up. It is very impotant in dredging to drop back down stream to the lower boundry & work your way up. Because if you get too excited on a sample hole you punched up stream & come across good gold without defining the down stream boundry, & you carry on dredging sucking up that gold, all your tailings are pouring out the end of the dredge & covering ground that still has good gold & you are burying it under overburden that you are going to have to dredge up again (double handel) if you wish to get ALL the gold that is in that pay streak.
So again it is all about sampling sampling sampling no matter what method of gold recovery you are doing to find & define the gold path & its boundries & to stay on it. Once an area is worked out it is back to sampling sampling sampling to pick up another one & so it goes on.
But dont you love it??
Take care.
JW
Hi there Mogo & all,
It sort of is like loaming isnt it, as you are trying to find the heavier concerntrations of material, gold being the target.
In loaming you are chasing specs of gold starting off from a wide base showing colours & working from left to right boundries & back from right to left boundries until you are getting no more colours in either boundry direction. The boundry being where you are getting no more colours in either direction Working your way up hill (generaly up hill) with the outside boundries of gold colours getting narrower & narrower until you reach a point where it is like the tip of a triangle or pyramid, beyond this point you will be getting no more colours.
Actualy as you reach this point the gold should be getting more chunky & shoty as it is freshly broken away from its parent reef or source & hasnt travelled very far & had the wearing, smoothing effects of weathering or rubbing.
Once the gold cuts out you start to dig down if you cant see any intrusion of gold bearing material protruding above the surface (because this intrusion is the material carrying the gold, not the country rock, & this intrusion material is also your indicator material). Usualy a quartz reef or "blow" as they are called, where it is breaking through the surface of the surrounding country rock. Sometimes the gold bearing associated rock (quartz reef) isnt breaking through the surface & this is the true art of loaming, to find the source of where the gold is coming (sheading) from when you cant visibly see the reef protruding above the surface.
Sampling to find a gold path in a dried up stream is very similar to loaming in this respect.
It is all about sampling sampling sampling to stay on the gold path. As I said in the indicator post, sampling may be time consuming but you need to do it to find & stay on the gold path. Once the path is found, & you follow it, you will be shoveling material with the best concerntrations of gold, & smiling from ear to ear.
Dredging is the same. First you need to find some gold by sampling. Then you need to find the left & right boundries which can only be done by punching a heap of sampling holes, once gold is found & the left & right boundries are found you then need to go ahead & find how far forward the gold boundry goes up stream & then drop back & find where the gold peters out down stream.
Once the down stream boundry is found you now know the gold bearing area that you can now systematicly clean up. It is very impotant in dredging to drop back down stream to the lower boundry & work your way up. Because if you get too excited on a sample hole you punched up stream & come across good gold without defining the down stream boundry, & you carry on dredging sucking up that gold, all your tailings are pouring out the end of the dredge & covering ground that still has good gold & you are burying it under overburden that you are going to have to dredge up again (double handel) if you wish to get ALL the gold that is in that pay streak.
So again it is all about sampling sampling sampling no matter what method of gold recovery you are doing to find & define the gold path & its boundries & to stay on it. Once an area is worked out it is back to sampling sampling sampling to pick up another one & so it goes on.
But dont you love it??
Take care.
JW