Gold Bearing Fluids with Prof Stephen Cox: Part 2

Рет қаралды 34,486

9 жыл бұрын

In PART2 of Prof. Stephen Cox's interview, he explains how gold-bearing fluids behave as they rise from deep in the crust.
See PART 1 at • Gold Bearing Fluids wi... and more about gold at goo.gl/0mw8Z4

Пікірлер: 37

@reverseuniverse2559 3 жыл бұрын

I would like to learn how gold just lays on top of soil in small and large nuggets found

@johnh3820 5 жыл бұрын

Thank you for feeding my brain with helpfully knowledge .

@richardrobertson1331 6 жыл бұрын

Wonderful discussion! Who knew how important this discussion (parts 1 and 2) would be and then to record and publish it to the world like this? My long term interest in geology now has a renewed level of excitement. This is truly an inspiring discussion. Thank you, to all those who were involved in this collaborative effort. Only fireworks could have made it more exciting . . . well, actually, the discussion did have fireworks in my brain when several of the points were discussed. Well done!

@GeologyFilms 6 жыл бұрын

Thank you Richard for your appreciation. It encourages me to do more!

@benainscough6229 Жыл бұрын

Thank you very informative.. amazing composition of activities to form gold deposits

@jdean1851 8 жыл бұрын

Clive - las few days just rewatched all your vids...its a year later and as layman geologist i know so much more about what i see around here in the mtn.s around me in idaho usa, your videos have taught me a ton! thanx again! any more in the worx? cheers. jd

@GeologyFilms 8 жыл бұрын

+J Dean Thanks for your comment JD. It's good to know you're getting something out of the videos. Some paid geological work is taking priority at the present, but yes, I plan to do more films this year.

@abdiazizibrahim9 6 жыл бұрын

structure ,deformation wall rocks,fluids pressure,and chemical process ,its the main drive to make and form the gold

@thvtsydneylyf3th077 11 ай бұрын

Brilliant video. I watched part one on my UNI website as we are learning about gold-bearing fluids and how gold is deposited. Thanks for this upload!

@TrevsOutbackandGoldAdventures 9 жыл бұрын

Very interesting and absorbing viewing,as are the other videos in the series.

@michaelhusar3668 3 жыл бұрын

You know you can learn something when the expert says we don't know. Excellent talk, presented what he does know, and backs it up with evidence. Also willing to listen to other theories. Geology is a field that has many open issues for the next generation of students to figure out.

@GeologyFilms 3 жыл бұрын

Thank you for your comment. I was fortunate to interview Stephen Cox as he is one of the world's foremost experts in this field.

@Willy_Tepes 5 жыл бұрын

Yes, quartz grows in layers. I found a fantastic site were glass clear quartz is layered with mica in layers from millimeters to centimeters. Never seen such specimens before, they look like glass covered by silver crocodile skin.

@frankus54 9 жыл бұрын

Great work!

@slow_diver 4 жыл бұрын

You're a natural Clive. I love your films.

@GeologyFilms 4 жыл бұрын

Thanks for watching and your generous comment. Cheers Clive

@db7271 6 жыл бұрын

Great talk

@sliczilla5166 4 жыл бұрын

Fantastic series Thank you

@GeologyFilms 4 жыл бұрын

Thank you for watching

@eckk7405 2 жыл бұрын

Informative and interesting converse of quatz an gold mechanics

@tomploner5916 3 жыл бұрын

Vielen Dank für das Hochladen - sehr interessant ... auch hier in Austria.

@GeologyFilms 3 жыл бұрын

Danke für deinen Kommentar

@nextgen8888 9 жыл бұрын

Very interesting!

@erenibrahim9265 Жыл бұрын

Thank you for sharing

@ninjamoves3642 Ай бұрын

fascinating stuff

@garymingy8671 5 жыл бұрын

I don't like dark and wet , so how do I find space gold ? Why is all metiorites Not gold ? Titanium , platinum , non reactive heavy metals , also how hot ? I'm seeing hints of impact causing viens , what's likely to pop out with plenty of energy but a rather short duration ?

@Hossak 3 жыл бұрын

Fantastic videos Clive in all aspects! What are you up to these days? I am a metallurgist in Melbourne and it would be brilliant to catch up with you over a few cleansing ales.

@robertbradford3461 5 жыл бұрын

Thanks learned a bunch

@chrisstrobel3439 3 жыл бұрын

Interesting theories.

@davidwilkie9551 Жыл бұрын

So next stage of concept development is the Electrostatic discharge involvement in sudden phase change at all flash-fractal In-form-ation substantiation levels? Geologists are exceptional Observers. Complicated and messy geophysics.

@TheGeoloco88 4 жыл бұрын

Thank you so much for these videos. Part 1 and 2!. Just a question, what determines the content of the fluid?. In gold veins, it's easier to see several layers of quartz but just a few of them carried gold. TY

@GeologyFilms 4 жыл бұрын

Great question - but the reasons why some veins, or parts of veins, are rich in gold and others are not is difficult to answer. Some researchers say that the composition of the wall rock (the rock that encloses the vein) is important. For example it has been observed that quartz veins in Victoria (in SE Australia) tend to be richer when they cut across carbonaceous shale. Stephen Cox talks about that in the video (Gold Bearing Fluids with Prof Stephen Cox: Part 2) at about 9:00 minutes. I also think that that there is more chance that a vein will be rich if a lot of fluid has fed into the vein over time, like in laminated quartz veins.

@TheTomBevis 9 жыл бұрын

Very nice video. I'm curious, though. What would be the pressure and temperature range of these fluids? Where can I find information on phase change of these minerals? My apologies if these are dumb questions.

@GeologyFilms 9 жыл бұрын

In my part of the world (Victoria, SE Australia) the temperature of the fluids would have been about 300° C, maybe a bit more, and the pressure in the range 80 to 175 MPa (1MPa = 145psi). The fluids had to overcome the total weight of the overlying rock before they could force open a crack to form a vein, and precipitate quartz and gold. So if the veins were buried at about 7km you would need a pressure exceeding 175MPa. These are good questions but I’m not sure where to get info on phase changes.

@TheTomBevis 9 жыл бұрын

Thanks!