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HOT Ground??? :ausflag:

R

razor66

New member
Heading out again tomorrow to a friends lease, very hot ground he keeps telling me, will the scorpion handle it? Are there certain settings i should use or just let the scorpion do its thing?


Glen :detecting:
 
.........NO.....I would just use it in the Ground Balance Mode and make sure that it is Ground Balanced Properly.....and use the Manual setting ...Joe
 
Hey buddy:wave:I suggest you keep the search coil a few centimeters off of the ground. Don't have it right on the ground or too close to the ground if the ground is quite hot. The Scorpion is so sensitive that it will still detect tiny nuggets a few centimeters deep with the search coil held off of the ground like that.:detecting:You probably already knew that, though.:biggrin:
Man I'd love to go nugget shootin' down under!:ausflag:
Have fun!:wiggle:Good luck!:happy:Happy Hunting!:)
 
Good luck=Wish I was with you= seems the Scorp will handle alla the trashy, hot rock ground I have run into by using AM and manual settings, HH:garrett:
 
That's what the ground balancing is for. In hot ground you'll need to manually ground balance the Scorp for smooth operation.

Bill
 
Hi all

Thanks for the info but when you talk about manually ground balancing, is that with the scorp in manual audio?

I am ground balancing fairly well as i can get it to balance without any change in signal as i lower the coil as per the book with the scorp in auto audio, but i didnt try it in manual audio, Is this what i should be doing? :confused:
 
Thanks for the tips. Will try again soon.
Everyone talks about HOT ROCKS and i can pick them out with the scorp as per the book. My question is: What is a hot rock made of??? I havent been able to find too much on the web

:detecting:

Glen
 
A hot rock has a higher iron & mineral content than the ground you have balanced out to, thats why it will sound off when you pass over it. they can be a problem in some areas but don't worry about them to much, They have there own sound that you will learn to reconize. You do want to look the rock over to make sure there is not some gold in it, you can do that with your foot and move on,once you find a hot rock you will notice that all the hot rocks in the area pretty much look the same.I Always look at any rock that sets the scorp off because I have found 2 meteorites . In quartzsite while detecting a hot rock looked odd so I put it in my bag & brought it home. turns out my wife found one and did the same , weeks later when i showed her my rock she dug hers out and it looks just like mine.turns out we were detecting for gold in the outer edges of a strewn field of a meteorite that landed in az. Now everytime I go there I'm obsessed with finding more meteorites.Don't worry about highly mineralized ground,the scorp can handle it , once you get ground balanced you check it say every 20-30' by lifting and lowering the coil, any change in sound all you have to do is tweak the balance knob with your thumb hit retune and your good to go. you need to buy a small nugget that will sound off on the scorp and carry it with you, after hours of finding nothing & you start doubting yourself & the detector throw the nugget down ,pass the coil over it to prove your detector works and refresh your memory on what a nugget sounds like, a buffalo nickle sounds real close.Before I go on a trip I take my scorp out and use it almost every day ,I detect my front yard,back yard,neibors yard & dig every target, that way you get familar with whats in the ground & how deep, they say you need to dig a thousand targets before you find a nugget so I'm doing some digs at home
 
Hi Moondog,

Thanks for the info. I believe I have the hot rock situation sorted as it makes the scorp go quiet in TR Disc mode with disc set at zero as per the book. I have a small nugget 0.5 gram that i carry with me for that reason, to compare signals. I suspect my problem is I am digging any faint signal change which i am suspecting may be pockets of minerals and as i dig it up it tends to disappear as the ground is broken up. Maybe I need to search more and wait for that short sharp signal instead????? :unsure:
I could be sitting at home cutting gems but its the dry season here now so time to get out and about.

So how do you tell if its meteorite?

Glen :detecting: :ausflag:
 
You know using the tr disc mode is what I did at first then after while you get familar with the sound they make so i just kick them to the side , check the spot again to make sure nothing is hiding under it & then move on. I have picked up,looked at ,smashed to pieces my share of hot rocks so I don't get too excited unless its a Quartz hot rock.have you found any negative rocks yet. they will take the sound away. I have just had some signals that i dug up go away for the first time , I have to agree with you , Its probably a pocket of minerals or maybe a nail that has decomposed to nothing but iron in the soil. On meteorites I am not a pro, the only reason I brought them home is because they were an interesting looking hot rock. The few tests I know are first it sounds off under your coil strongly,second you tie a string to it and move a magnet close to it & it will move slightly due to the iron in it,third look at it and it should have little dished out spots and sort of look burnt, compair it to pics I have googled and last of all let an expert look at it.
 
Hi Mike

I think i have a negative rock as you call them. With the scorp balanced it goes dead quiet in All Metal, dead quiet in TR Disc but beeps twice in Motion Disc. That is without moving any dials just flicking the mode switch!! WHAT IS IT? It is only the size of a pea! and very magnetic :confused:

Glen :detecting:
 
A negative rock will silence your detector due to the lack of minerals or iron in it, I guess you would say it has less minerals than the ground you are balanced to. It sounds like you might have some Magnatite, I don't understand why it does not sound off in all modes unless your ground balance is way off , or do you have any discrimination dialed in. Sounds like that little rock might be something special. can you post a pic of it.
 
Yeah man, I'd say that it's just a cold rock/negative hot rock. Hopefully you'll have a nice little nuggy to post next time. We're gonna be hittin' gold country(CA) in June and July. Hopefully we'll find somethin' worth postin'. Either way, it's just nice to be out there enjoying nature. Thanks for the pic! :biggrin:Happy Hunting!:)
 
Its hard to say with out being there but the redish color tells me theres a lot of iron in it. I wonder if it could be a iron rust nodule from some thing iron decomposing in the soil.Could be a decomposing iron meteorite, Its hard to tell , I have never seen a rock like it, It looks very interesting. I would try and find a geologist to ID it.
 
Here is a link to a free on line rock & mineral class. Its really great plus sigh up fo the weekly news letter, lots of usefull info. some time during the course he sent me a form to send in a pic of a rock for a free ID. http://geology.about.com/c/ec/1.htm?nl=1 I hope it works.
 
Humm, does this thing stick to a magnet?
How does this thing air test on autotune in all metal?
Have there been any meteorite falls near or on a line over your area..ever?
I suspect this may be some sort of hematite, magnetite, or maghemite, or perhaps a nearly decomposed bit of old iron. Or just an iron ore or loadstone.
But a very weathered meteorite can have all those ores too!
It seems to have lots of very angular surfaces -which is very not like a meteorite.
If it had any iron or nickle metal, as meteorities do, it should detect as metal in all metal mode.
Easiest thing you can do is do a scratch test, all it takes is an old bathroom tile:
http://meteorites.wustl.edu/id/streak.htm

Whatever it is, it's cool!
 
Do you hunt the Yuba River any? That's where that big nugget I post sometimes came from. And do you hunt the dredge tailings on the Feather River?

Bill
 
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