Gold, Faults and Fluids

[hopebear]

Wow! That's my great uncles mine. Bill Spargo (The Hotham Hermit) lived up there for 27 years. He had a hunch that the Ballarat goldfields ran through the high country. Whilst prospecting he spotted a Red Robin sitting on some quartz which became the Red Robin mine.

[BruceschultzAU]

Incredible knowledge
Thanks for sharing
Hopefully I can find more gold on the surface now. I've allways loved rocks I actually found a water warn quartz boulder that contains volcanic opal behind Coffs Harbour in the old gold feild. it was my boulder opal mining day's that made it catch my attention and on closer inspection with my Geo hammer that confirmed my suspicions visible clearly under my loop. I showed and gave Mac at Bellingen opal shop a few of the peices he laughed and said they may contain gold but definitely not Opal when he saw it his words were this belongs in the Australian museum. I still have the king stone I never showed him.
Cheers Bruce

[paullennox]

Great work Clive. Thanks for putting these videos together.

[rond]

Fascinating series; you are re-enthusing this amateur geologist! Thanks

[oddball]

I know it's an old vid but I like to add that I'm on the earthquake ride, but I lean much more toward the bridging effect of the crust over a pluton taking away the weight of the rock above and leaving much less weight over the pressurized pluton and that makes it easy for the fluids to push up, crack and fill the fishers. Lateral pressures can ease up and the bridging loses it's effect returning the weight. Several episodes will leave the same streaked veins. An earthquake would be a side effect not a cause.

[JCO]

I'm a caver in Jamaica, and after watching this I realize that a lot of our strike passage caves have a dip at about 30 degrees from horizontal. Very glad I watched this. Many thanks.

[frankbyrd]

I enjoyed this video very much with my morning coffee, now I will have to subscribe and watch more of the series
I am a prospector in the American west
I had a step dad (when I was a teenager) who grew up in Kellogg Idaho ( Glen Smart ) and worked underground all his life in mines around the world . He had very little formal education . He taught me quite enough to make a prospector out of me for life . I will soon be 64 . that seed made an amateur geologist out of me
Calif. to Nev. to the Carolina's to Idaho/Mont. to Wash. to Alaska and now back in Washington ( Eastern )
Working placer deposits for super fine gold. ... But always an eye on the geology everywhere I go . This vid. fanned the embers

[frankus]

These are great videos. thanks for going to the trouble to product these.

[bentationfunkiloglio]

Very informative and well produced. Enjoyed this video immensely.

[Rockhounding-with-Bigfoot]

Watch from 8:19 to 10:33 all you GOLD HOUNDS out there. Its a bit of some jewel of wisdom.

[barry]

Thanks that was like a delicious entree, I’ve subscribed, I’m a mug but travelled all over Oz outback looking and collecting but never understanding. Over in the goldfields of WA we came across an area that had low aligned hills that were either predominantly white quartz or black iron stone, but the weird part was they were adjacent to each other and occurred over a fair area. I’m sure a geologist would know why, thanks

[goldfools]

I have watched all seven videos.
Very enlightening.
We have a small gold lease in WA. It was mainly to fossick for a bit of surface gold. Which we have found.
The surface rocks have intrigued me, with fault slicks and gneiss just laying on the surface. There are small hills covered in degrading green schist with veins of quarts just breaking the surface.
To add to this we have found thumb sized quarts/ironstone specimens shot with gold and with like a gold netting pattern on the surface.
Watching these videos has got me thinking that there is a possibility that the origin may well be deep in the hills.
I wonder why no one has done any exploration work before.
Should I take that as there i signs that would say it’s not worth it or is there a newer thinking about metamorphic faults the old timers missed.

[HunzaStoneAge]

Wondering in karakurams..thanks for the great data.

[heartobefelt]

is it common for mineralisation to be in higher concentrations in faults that are at steeper angles to the axis of movement or axis of force ?
if faults at 10 - 20 degrees have lower horizontal kinetics (force) acting on them, is it possible that enriched hydrothermal mineralisation will not occur on these locations due to the low pressure and temperatures generated, while fluids will still flow through them angles of 30 degrees or more will support higher pressure / temperature and be more likely to produce mineralisation ?

[FredrikWonWachenfeldt]

Thank you for perfect done videos, excellent done!!!!❤ Fredrik From Sweden!

[trotting_bull_moose]

Is this process still taking place today? It is common belief that the gold was laid down during the tertiary period.
When the fluid enters the fractures in the faults after a seismic event is the gold in solution and then some how precipitates out later ? or is the gold actual particles simply just transported by the fluid? And finally has an effort ever been made to locate the fluid and then bring it to the surface to extract the gold by precipitating it out ?
Thanks for the great video. It gives us a chance to see the great minds behind the mining industry success. It has taken centuries if not millineums to aquire the knowlodge these men posses. They are an elite breed of professionals.

[ethanrichardson]

All geologist can relate to great ideas starting with beers at the pub with fellow geologists!

[Auriferousoz]

Great information and very Interesting stuff to learn, thanks.

[clairedeiotte]

Farron plate and the fault line up pushing under

[alicemiller]

How did the old miners know all the stuff about the faults? They didn’t have the technology we have today and not trying to insult them, but I suspect many did not even have a high school equivalent education. It really impresses me what they knew back then, but how they knew it baffles me!