northwest Recent Posts
Welcome, Guest. Please login or register.
Friday November 16 2018 02:29:27 AEDT AM
Home Help Login Register
News: Welcome to the Australianelectronicgoldprospectingforum founded in July 2010, an add free totally independent forum with over 70 boards and paid for and managed by the Admin.Total forum Topics: 9,052  Total forum Posts:44,942. Members:780 Total page views:12,001,347     Admin and  forum and domain name owner :marjen at optusnet.com.au. Guests can only see a limited number of boards at present and cannot see any hot links. Guest cannot post and never will be permitted too!Registration of new members must be approved by admin.Anyone known to have any past or present association with Codan/ML or acting on their behalf as a proxy or intermediary  will not have their registration approved.
All moderators from Prospecting Australia (PA) forum are banned. All  original Photos and posts and  original materials displayed on this site are COPYRIGHTED and remain the property of the poster and the  Austalian electronicgoldprospectingforum.com. All messages on this forum express the personal views of the author and should not be interpreted as necessarily being in accord with those of the forum owner and neither the owner of this forum and its domain name nor SMF or the forum software developers or the forum host shall be held responsible for the content of any message. Admin reserves the right to remove any offensive or objectionable posts. No defamatory material or politics/religion or issues of race will be permitted.
Unlike Prospecting Australia forum this forum is not run for the financial gain of the owner or admin. Unlike PA forum members here may link to or promote similar other forums without being banned by a group of unstable and inconsistent, faceless moderators/admin and an admin who resides overseas! Unlike  Prospecting Australia  forum this forum does not breach your privacy  by sharing your personal data with any  third party or advertiser unless directed /requested  by an order of the courts. Do you trust Google, Adsense or Amazon  with your personal data? Are you happy to have your personal details stored on an overseas server  and controlled by an  overseas unknown admin? By contrast this forum is hosted on an Australian server and the admin resides in Australia.Unlike  Prospecting Australia you do not have to make 10 posts before you can use the forums personal messaging system!
More QED instruction videos added and testing on  buried nuggets.
QED in WA
"Well two days of detecting in WA and I can report that the QED is performing very well and is handling the conditions without a problem" And is finding gold!
Why pay $200 /year ripoff to be a forum sponsor on Prospecting Australia forum with all the limitations and restrictions placed on you when you can advertise your products/services(except any Codan/ML products/services) here for FREE just by joining this forum!
The designer and manufacturer of the QED will only post on this forum!

australian electronic gold prospecting forum.com  |  Recent Posts
Pages: [1] 2 3 4 5 6 7 ... 10

 1 
 on: Yesterday at 10:07 
Started by Doug - Last post by Doug
 What is QED mode 16 used for?
doug smile

 2 
 on: Wednesday November 14 2018 21:38:07 AEDT PM 
Started by Doug - Last post by Doug
The formation of gold deposits in South Africa
German-Canadian research team discovers new ore-forming process in ancient marine sedimentary basin
20 April 2017/Kiel. The Witwatersrand basin in South Africa hosts the largest known gold repository on Earth – but how was it formed? Scientists of the GEOMAR Helmholtz Centre of Ocean Research Kiel and Canadian research institutes were able to figure out how parts of the Earth’s largest gold deposits formed about three billion years ago. Crude oil and hot hydrothermal fluids played a major role. This study has been currently published in the journal “Precambrian Research“
  
doug smile

 3 
 on: Wednesday November 14 2018 20:02:12 AEDT PM 
Started by Goldman - Last post by GARY
Just for the record my GPX5 operating with the GB set to fixed (which I prefer) over the same ground produces a response on the same hot rock type intrusions requiring a Re-GB. The QED appeared to require a once only manual GB figure adjustment.

As far as I am concerned my GPX5 does not operate a mono coil with the GB set to tracking as well as a GP3 in tracking, that I owned previously.

Gary.

 4 
 on: Wednesday November 14 2018 18:01:01 AEDT PM 
Started by Goldman - Last post by bugwhiskers
The "Holy Grail" of ground balance is tolerance for an extreme range of soil types and the occasional pesky hotrock.

 5 
 on: Wednesday November 14 2018 17:50:43 AEDT PM 
Started by Goldman - Last post by Doug
  
The attached file is the lapsed WIPO patent by George Paltoglou.
Like other many other GB patents it uses sample periods and a subtraction/null summation electronic circuit akin to an old fashioned balance beam as disclosed in a 1968 paper by Eric Foster.

After the TX signal, the ground minerals take time to decay as do any targets within the ground under the coil. Both the ground and target if present control the shape of that decay. If you take an old fachioned photo of that decay curve then using a pair of scissors to cut it vertically into slices it is possible to get the width of the slices correct so that when placed alternately on the sides of the balance beam they balance (are equal). There is however a fly in the ointment. The total width of the left hand samples must equal the total width of the right hand side samples to null the signal from the Earth Field and Magnetic soil simultaneously.


Currently the QED uses 2 short TX and 1 long TX to differentiate. The Paltoglou patent mentions using 3 different widths. When time allows I will try it out and if successsful at handling highly variable ground, add it to the QED "MODES"


Look forward to the  results.
doug smile

 6 
 on: Wednesday November 14 2018 17:41:58 AEDT PM 
Started by Goldman - Last post by bugwhiskers
The attached file is the lapsed WIPO patent by George Paltoglou.
Like many other GB patents it uses sample periods and a subtraction/null summation electronic circuit akin to an old fashioned balance beam as disclosed in a 1968 paper by Eric Foster.

After the TX signal, the ground minerals take time to decay as do any targets within the ground under the coil. Both the ground and target if present control the shape of that decay. If you take an old fashioned photo of that decay curve then using a pair of scissors to cut it vertically into slices it is possible to get the width of the slices correct so that when placed alternately on the sides of the balance beam they balance (are equal). There is however a fly in the ointment. The total width of the left hand samples must equal the total width of the right hand side samples to null the signal from the Earth Field and Magnetic soil simultaneously.


Currently the QED uses 2 short TX and 1 long TX to differentiate. The Paltoglou patent mentions using 3 different widths. When time allows I will try it out and if successsful at handling highly variable ground/hot rocks, add it to the QED "MODES"


 7 
 on: Wednesday November 14 2018 14:11:58 AEDT PM 
Started by Goldman - Last post by GARY
Was out just recently using the QED with Commander 11" mono over some ground that had previously been cleared to expose a surface layer of whitish type clay with orange colour rocky type intrusions exposed in various places at the surface and slightly beneath the surface once the surface was scraped away with the pick.

The ground balance figure for the clay was not all that high at 107 however once I encountered a orange rocky type intrusion it produced a rising response to the QED. I manually pressed the down arrow button to lower the GB figure from 107 down to 103 and the response from the intrusion disappeared. Once I passed by the intrusion and back onto the clay I manually raised the GB figure back up to 107 until another intrusion was encountered.

After I detected another rising response intrusion it occurred to me why not leave the detector set at 103 that allowed me to cancel out any intrusions and see if I can continue to detect without a response from the clay even though the clay produced a higher GB figure.

Well the detector appeared to have no further issues from this particular type ground.

The QED settings were THS-B: 48, THS-A: 60, GAIN: 1 & MODE: 6.

Gary.
  

 8 
 on: Wednesday November 14 2018 13:49:18 AEDT PM 
Started by Doug - Last post by Doug
Epithermal Gold Deposits
Epithermal gold deposits are among the  richest gold deposits in the world with some bonanza grade ore shoots containing more than 1000 g/t gold, or in other words, a kilogram of gold for every tonne of rock mined. Unfortunately, the tonnage of ore in epithermal veins is typically small compared with other types of lower grade gold deposits.
  
link-https://www.geologyforinvestors.com/epithermal-gold-deposits/
doug smile

 9 
 on: Wednesday November 14 2018 13:47:45 AEDT PM 
Started by Doug - Last post by Doug
Diversity of Gold Deposits, Geodynamics and Conditions of Formation: A Perspective View
ABSTRACT
Gold occurs in a wide range of deposit types and settings. In the last decade, significant progress has been made in the definition, classification, characterization, thereby aiding understanding of the main gold deposit types. The present work aims to provide an update on the current state of knowledge on the different types of gold deposits models, geodynamics, their mode of formation and the condition suitable for their formation Several subsets of gold deposits are distinguished from one another on the bases of and their main geological models and their mode of formation described. Gold deposits of magmatic-hydrothermal origin are classified into Porphyry, Epithermal, Skarn, Iron Oxide-Copper-Gold and Intrusion related deposits; those of hydrothermal origin are Orogenic, Volcanogenic Massive Sulphide deposits, and Carlin-type; while those of Sedimentary Origin are placers. In terms of the major Period of gold deposit formation, the Mesoarchean was the largest gold period. Other gold peaks followed, particularly in the Neoarchean, Paleoproterozoic and Paleozoic while numerous and diverse gold deposit types were formed during the Cenozoic era.Wide varieties of geodynamic contexts in which each of the gold deposits are formed being explained while the conditions favourable for its formation are also being summarized. With the recent rise in the price of gold, mining companies and research centers continue to provide lighting of the key geology features of then ore-forming environments and the key geologic manifestations of the different deposit types.
Link only available to registered forum members
  
doug smile

 10 
 on: Wednesday November 14 2018 13:27:35 AEDT PM 
Started by Doug - Last post by Doug
Link only available to registered forum members.
  
doug smile

Pages: [1] 2 3 4 5 6 7 ... 10
australian electronic gold prospecting forum.com  |  Recent Posts


Login with username, password and session length

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2006-2009, Simple Machines
Simple Audio Video Embedder

BisdakworldClassic design by JV PACO-IN
Valid XHTML 1.0! Valid CSS!