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#101

Wizzard007
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Joined: 07 September 2016
Posts: 7
Member
30 December 2016 11:31 am

That is the exact info that new beginners like myself need to hear.
Very helpful, I thank you.

#102

cml
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Joined: 16 February 2017
Posts: 80
Member
18 February 2017 12:31 pm

Another very useful resource thread; thanks folks!

Chris

#103

Feathers
Newbie
Joined: 13 January 2017
Posts: 1
Newbie
26 February 2017 03:51 pm

I carry a copy of this when I'm in the bush.

#104

7.62marksman
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From: On the road, NSW
Joined: 26 July 2016
Posts: 8,572
Member
26 February 2017 04:13 pm

Thanks Mystyk59 i also printed a copy and laminated it and is now it the turtle


Confucius says Before you embark on a journey of revenge "Dig two graves"

#105

russ g
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Joined: 19 October 2015
Posts: 14
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14 July 2017 04:54 am

Lot of information there very good read thanks

#106

easy181
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Joined: 11 July 2017
Posts: 4
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17 July 2017 02:41 pm

I am just looking to start out. Thanks for the excellent information.

#107

Yelo truffle
Newbie
Joined: 17 July 2017
Posts: 5
Newbie
17 July 2017 09:33 pm

thumbsup Thanks for info and photos explaines
It better for nubee.

#108

R0dney
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Joined: 12 July 2017
Posts: 8
Member
18 July 2017 10:47 pm

just starting out and have decided to go out mid august for the first time so this information is greatly appreciated thanks alot

#109

gmhxu6
Newbie
From: Shepparton, VIC
Joined: 27 August 2017
Posts: 2
Newbie
27 August 2017 09:05 pm

What a great post and thread! So much information for newbies like me. Very interesting reads.

#110

Ge_off Digger
Newbie
From: Tweed Heads
Joined: 26 August 2017
Posts: 6
Newbie
27 August 2017 09:54 pm

Thanks mate, Good info, I will keep this for reference. thumbsup thumbsup thumbsup


Such is life, "oh well, I suppose it has come to this" . Ned Kelly's last words.

#111

tednjan01
Newbie
Joined: 02 September 2017
Posts: 2
Newbie
05 September 2017 09:27 pm

Thank you so much for the info that you have supplied so useful for someone like me who has no idea at the moment.
Ted

#112

Chris1967
Newbie
Joined: 02 October 2017
Posts: 1
Newbie
02 October 2017 08:27 pm

Thanks,I will be looking for all of this when out next

#113

Skip75
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Joined: 28 March 2018
Posts: 17
Member
07 April 2018 10:30 pm

Awesome info. I’m really enjoying these newby threads. I’m trying to act like a semi permeable membrane and absorb everything I can tongue

Last edited by Skip75 (07 April 2018 10:31 pm)

#114

Skip75
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Joined: 28 March 2018
Posts: 17
Member
07 April 2018 11:01 pm

Fantastic info definitely appreciate the links to reading the journals etc. awesome work guys well done

#115

TashAus
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Joined: 29 September 2018
Posts: 7
Member
24 October 2018 02:21 pm

Awesome info, thanks for sharing smile

Last edited by TashAus (24 October 2018 02:22 pm)

#116

Liam6589
Member
From: Sydney
Joined: 02 April 2019
Posts: 13
Member
02 April 2019 08:15 pm

There are several signs that I did not take into account. It's a shame, this means that I missed one interesting thing, it's good that I remember its approximate location.
Post with notes on the search, useful, I will print it and save myself smile

#117

VicGoldHunter
Member
From: Golden Triangle , VIC
Joined: 16 December 2016
Posts: 185
Member
05 May 2019 04:49 pm

I’m planning a trip to dunolly/Kingower/Waanyarra soon and was wondering and still learning. In the state forests can If i camp anywhere do I have a chance to find gold? I’m thinking of almost throwing a dart and picking a spot. Or is the gold only in gully’s etc?


Gpx4500 and 15” NF Evo, X terra 705

#118

goldierocks
Member
Joined: 10 January 2015
Posts: 3,438
Member
05 May 2019 05:17 pm

Diggerdude wrote:

Greenstone= jade?? Don't reckon that's correct. Maybe in nz.

Most of the greenstone belts associated with gold in Aus are ancient basalt. ( it is not an actual rock type but rather a term used for metamorphised belts of basalt and granite ). They are often heavily folded from continental movement and intruded by granites. Because of there extreme age they often have lots of cracks that have been filled with quartz, long after the basalt formed. So it also has nothing to do with the temperature of the rock. This is where you often get gold disseminated though the greenstone near the contact with quartz.

Hope this clears it up for you all.

DD

Partly correct in both the original and the comment on it, but mostly only for Western Australia. Although nephrite is sometimes referred to as greenstone, the meaning in the list is almost certainly metamorphosed basalt (there is no particular association of nephrite and gold). The comment re metamorphism is correct, except it is never metamorphosed granite, only rocks like basalt. However be aware that this association with greenstone (in Australia) is almost entirely relevant to Western Australia only (the Yilgarn and Pilbara, where almost all gold is related to greenstone - but not to granite - so a valid point.

The "temperature" comment actually has more than a grain of truth, depending on what is meant. Fresh basalt does not usually contain gold, it requires burial (higher temperatures and pressures) to convert it to chlorite-rich rock at intermediate depths, and amphibolite at great depths (we call both greenstone). The conversion process involves driving off water from the rock for amphibolite to be created. This hot water probably dissolves silica and gold. This then pumps up fractures to shallower depths, and deposits quartz and gold in fractures, most often in the chlorite rocks, sometimes deeper in the amphibolite, but virtually never in fresh basalt.

So to re-word it. If in the Pilbara or Eastern Goldfields of Western Australia, look in greenstone (chlorite and amphibole rocks, which are green), not in granite or fresh basalt (but note that some greenstone if little-altered can still resemble basalt, but can contain gold - really need a geo in that case - the trick being that all that is Archean in age is now greenstone, and basalts are Cenozoic or Mesozoic and quite rare in those areas.


Robert Benchley...
I have kleptomania, but when it gets bad, I take something for it.

#119

goldierocks
Member
Joined: 10 January 2015
Posts: 3,438
Member
05 May 2019 05:43 pm

DeckyDan wrote:
Mystyk59 wrote:

A mate of ours posted this on our page on facebook and i thought it might be useful for some of those starting out cool

1. etc etc
All great info without the boring bits, great job!

From the point of view of a gold exploration geologist, a good practical list that is difficult to fault.

Just a few comments - the first comment (above) relates to greenstone. Good advice for Western Australia and of very limited to no use in most of the eastern States. While a lot of the world's gold comes out of greenstone, half came out of the Witwatersrand where none is in greenstone (ditto for 95% of production in Victoria, most in Nevada, NSW etc.). In Australia, it mostly works just in the Pilbara and Eastern Goldfields. For example Victorian gold is mostly in sandstone and slate.

There is no evidence of a relationship to agate in Western Australia (but chalcedony usually litters the surface in areas underlain by greenstone, which is probably where this idea comes from). So it helps you know when you are on greenstone not granite in Western Australia, but is not a direct indicator of gold. It has nothing to do with it being hot enough to form gold, nor is the colour related to temperature - the WA chalcedony is not formed from hot water in the main. There are other areas in the world (eg Nevada, North Island NZ) where high temperature chalcedony occurs and gold is directly associated with it - then it is a direct indicator of gold. The colour is irrelevant although most is white or fairly clear, usually in bands like agate. However it is rare to find such ore bodies in Australia - a lot in Queensland, very few in NSW, nothing of any real interest in Victoria (white quartz is the main carrier in those last two states). Rose quartz is not useful as a general indicator anywhere in the world that I am aware of, and its colour is not temperature-related (no doubt there will be an exception somewhere in the world, but it is not a general indicator). It is true that a lot of black quartz is formed by radiation damage (however unfortunately it is not a very useful indicator of uranium because it also occurs in many areas without uranium - and much black quartz is due to petroleum inclusions not radioactivity).

So overall an excellent list, the main issue being that it was probably compiled by someone working in Western Australia where it applies best. And be careful of the significance of "agate" (chalcedony) even there. Different indicators apply in different parts of the world and Australia, but greenstone is good (mainly in WA) and for detectorologists and panners quartz is a very good indicator in most of the world (but not all - most gold mined in Nevada nowadays is not in quartz veins, and the same was true in the Witwatersrand - but is too fine to detect or pan anyway - even there, the stuff you can detect or pan mostly comes in quartz or chalcedony veins).

Last edited by goldierocks (05 May 2019 05:44 pm)


Robert Benchley...
I have kleptomania, but when it gets bad, I take something for it.

1 user likes this post: cairnspom

#120

sammie
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Joined: 14 September 2019
Posts: 3
Newbie
30 September 2019 11:32 am

thanks for all the info, really helpful.

#121

roundtuit
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Joined: 29 December 2018
Posts: 35
Member
30 September 2019 09:04 pm

thanks for the info great thanks


30/30 gm 1000

#122

Dave63
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Joined: 23 October 2019
Posts: 136
Member
26 October 2019 10:38 pm

Clear concise info condensed from what you hear spread through 1000s youtube vids all in one place Excellent

#123

Yeahnah
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Joined: 26 August 2020
Posts: 11
Member
30 March 2021 01:23 pm

Thanks for the info, very interesting read.

#124

Gypsyd
Member
From: Bonny Hills, NSW
Joined: 28 June 2021
Posts: 31
Member
17 August 2021 04:52 pm

Thats a great read mystyk thanks for some pointers on Detecting thumbsup


SDC2300, Musketeer XS Pro, Swing Harness Walco Pick


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