Thanks for the comments I first thought the rock was granite there is heaps of it around but since chipping at it I think it is across between sandstone/mudstone granite and quartz all mixed in to one it has purple tinge in some places.we got a couple of little nuggets in the hollows of the rocks my young bloke was moving off when he got a faint signal on a bare rock with his 7000 then I checked with the sdc and had the signal as well very squiggly signal sounded like a bit of wire but it was in solid rock so we chipped at it with a pick very hard and bits flying off when the signal was gone I went over all the chips and we found the bit with gold in it.we then scraped up all the chips and put them in a bag so we can put them through the crusher we got more signals from the rocks and repeated the process.we found some more chips with tiny gold in them we lost one due to it being hard to chip at it without it flying everywhere we will be going back with hammer/chisel and crowbar we stumbled on to this didnt even think of detecting the bare rock all in we got 5signals in the rock I got some more but we left them due to loosing a bit and it getting dark we will be back there soon better prepared cant wait to see if the chips we picked have anything in them cheers muk