Iron Oxide / Fe2o3 / Gold

[LE.JAG]

Hi all

we are looking for information
on different types of gold ground
producing detectable gold / no gold panning

I did not go around the whole forum
but I see that there are prospectors from all over
United States, New Zealand, Australia ??

the more information we have (precise)
from different sources / better it will be ...

so, among you who already find gold
do you know the percentage of Fe2O3
and Fe3O4 on your hunting grounds

if you have answers,
please specify if the terrain is easy or difficult
to find gold

we are developing a testing ground
with mineralized lands of different origins
the goal being to have the widest possible range of difficulty
to improve performance ..

all information will be welcome

Thanks !

[Steve Herschbach]

Most serious prospectors are using machines like the Minelab GPX and GPZ units that do not report on the mineralization level in any measurable way. I hunt lots of different areas with mineralization from mild to severe, but I don’t know really how most of us can give you useful data.

[LE.JAG]

yes, these are hard data to find ....

we hope to find a prospector who has already done
test the earth of its hardest spots
or with advanced knowledge in geology
must have one, some............

light mineralization, is not a problem
AQ is already on it ...
extreme cases see impossible / are more interesting

[Rick K - First Member]

For us non-geologist/chemist types...

Fe203 is usually found as hematite 

Fe304 as magnetite

The F-75 and T-2 have readouts of Fe304

Here’s a cut from the F-75 manual as well as one posted a while back by ElNino77

 

[Rick K - First Member]

Also, perhaps see this post on Dankowski.  About 12 posts down “HumblePie” gives a detailed explanation of the relationship between GB readout numbers and Fe3O4 percentages.

Note, in an early post”Streak!” States this about the infamous Culpepper VA ground...”In the area around cupleper Va, the FE304 reading varies from .1 to 1, with the RARE 3.

[LE.JAG]

Thanks Rick,

Alexandre to find a supplier in Germany
red earth 16% Fe3o4
up to 22% reduced to powder !

and black earth 10/12%
with that, we will be able to reproduce most of
of cases

[EL NINO77]

I use a mixture of 25 kg of silica sand for 1 kg of pure Laboratory Magnetite so it is approximately mineralization is 4% Fe3O4 ... the measurements show on 7bar Fe3O4 -Teknetics G2-11DD coil.
This is also the limit for many Vlf detectors, but you need to radically change the settings on them and use some tricks/in overload/ to ground the Balance...

 

LE.JAG .. Your extremely mineralized soil at 12% and 16% Fe3O4 .. will be a big challenge for many Top detectors ... So I'm looking forward to your tests with the new Fisher Pulse detector...

[Rick K - First Member]

Do you see where this is heading?

Maybe towards a new machine introduced with actually verifiable test results against standardized and measurable set-ups. Wouldn’t that be a change?

”blinding me with Science...”

[DolanDave]

Make a detector that can discriminate some hot FeO, basalt, ect without losing depth/ good targets=  instant millions.... good luck.