Most lucid explanation of pyrite oxidation I’ve come across, very accessible ⭐️⭐️⭐️
@wavecat8242
2 жыл бұрын
Thank you for the abundance of content on this channel, optical mineralogy pt1 and 2 are my favourite coveted segments so far in terms of my personal research
@GEOGIRL
2 жыл бұрын
Thanks! Oh, really? What is your research? :)
@JoesFirewoodVideosII
2 жыл бұрын
I’ve had a up and down day today Rachel, better finish it on a up note by watching your video. I ❤️GEO GIRL
@Smilo-the-Sabertooth
2 жыл бұрын
Terrific and interesting video as always. It always makes my day every time you a upload a new video which is why I’m happy to continue giving your channel my full support. Thank you for teaching me a lot and I always enjoy and look forward to learning more. 😊❤️😉👍
@GEOGIRL
2 жыл бұрын
Of course, my pleasure as always ;)
@cohensgoldntreasures
Жыл бұрын
That was incredible! Thanks for sharing your knowledge with us!! Very cool info 😃
@GEOGIRL
Жыл бұрын
Of course! I am so glad you enjoyed it! :D
@levettp
2 жыл бұрын
Thanks for sharing your interesting knowledge. We have a PGM refinery targeting Iridium, Osmium & Rhodium. Currently the dissolution process (normally aqua regia or HCL + H2O2) stagnates due to protective layers forming on metal. We re-mill the ore to reactivate dissolution but this an inefficient process as ore must first dry etc etc and then there dust losses with every time we mill. Do you have experience or suggestions on using bacteria/fungi to keep the PGM's clean during dissolution? #Your concept of bio-oxidation to get rid of the base metals and leave the refractory metals behind sounds interesting.
@GEOGIRL
2 жыл бұрын
Oh what a great question! I never thought about this application of biology for keeping it clean, but it makes total sense and I am sure it can and probably has been done. Unfortunately, I am no expert in these metals ot any bacteria that would interact with these metals. Do you know what the protective layers are?
@levettp
2 жыл бұрын
@@GEOGIRL It is probably oxides of the metal. This might surprise you as these metals are regarded as resistant to oxidation even at very high temperatures. BUT PGM powders, in our case below 20micron, easily oxidizes if dropped through e.g. a propane flame. Another wrong assumption easily made is that the PGM particles in ore are pure. I suspect them to rather be alloys of which iron is most likely a component. All this is speculation but I have no better explanation at this stage.
You are very welcome, I am so happy you found the video helpful ;)
@rune.institute
Жыл бұрын
Thanks god. It is so helpful.
@KerriEverlasting
Жыл бұрын
I really want to know the relationship between clay and lava. There is so much I want to know but I don't know enough to even ask the right questions.
@GEOGIRL
Жыл бұрын
Lava cools to form igneous rocks, then clay forms from the chemical weathering of those rocks (because over time water can cause some elemens to leach out of the igneous minerals leaving behind only the leach-resistant elements, converting the rock into clay). I'll of course, discuss this in more detail in the future clay video though ;) (although I must say after today it seems like you are getting to be more a clay expert than me! haha)
@KerriEverlasting
Жыл бұрын
@@GEOGIRL so sometimes what's left after microbial dissolution/corrosion, travel, and a few other processes- what's left is SOMETIMES iron/metal and sometimes other things? Ferric oxide and hydroxide, what other things can be left? Do the chemical bonds change depending on what's left? Ie - is some clay stickier/harder to break up than others? Sorry for so many questions- the feldspars is what's left? And feldspars can be but not necessarily iron?
@derekdickinson1817
Жыл бұрын
Holy shit girl ,, U are bloody awesome and unreal, you totally blew me, in an inspirational and unfathomable way, How the hell do you remember all this stuff and present it the way you do, you must be 1 of the fallen ones, Im speechless and gobsmacked by yourself, what you can comprehend and recycle out at a later date, is what I will do in a lifetime if I'm lucky, , Plus you pretty hot also,, which helps me keep watching, listening sorry lol❤😮❤😊
@subhadran99
2 жыл бұрын
Informable
@GEOGIRL
2 жыл бұрын
Thanks, glad you found it helpful ;)
@KerriEverlasting
Жыл бұрын
Clay is dissolved fe hydroxide?? Clay is metal in mud?? Agggrrr. I'm so confused.
@GEOGIRL
Жыл бұрын
No, not dissolved, but yes, clay includes solid phase Fe oxide and Fe hydroxides. Haha I like the description of metal in mud ;) But mud and clay are technically synonyms and are actually just defined by their exremely small grain sizes. The composition of clays varies widely including Al, Fe, Mg, Na, K silicates to Fe oxides and hydroxides. (I know I answered this for you in another comment on another video earlier today Kerri, but I wanted to re-answer it here in case people come to this video and look to this comment chain for answers ;)
@KerriEverlasting
Жыл бұрын
@@GEOGIRL I understand. This is so nice of you. It must be really difficult to answer such vague questions. Like Feynman said something like "you can't know what you can know, unless you know what you are already allowed to know". He meant without a mutually agreed framework from which to ask questions every answer ends up being an infinite and impossible explanation of life the universe and everything. But I think you've managed to fill in enough blanks to get me asking right. I have this depressing sensation my next stop is going to end up being covalent bonds and ions for some reason.
@oliverweeweepie3132
2 жыл бұрын
So in areas with very cold winters I guess bioleaching would stop so probably not economically feasible. In hot areas where temp exceed 35 C the process is also slowed down. So I guess bioleaching is limited to narrow-ish zone of latitude where it is economic?
@GEOGIRL
2 жыл бұрын
The exact T range that is optimal will depend on the microbial species being used, but in general, yes, bioleaching capabilities are limited to certain locations and seasons (depending on the microbe species, which depends on the target metal). However, humans are able to heat the heap and make it acidic to make conditions favorable so as long as the heating is not more expensive than the end profit, I suppose they can do it any location year-round. :)
@subhadran99
2 жыл бұрын
Can you please explain about career in geology in your location
@GEOGIRL
2 жыл бұрын
Yes, of course, I am working on a video all about geology careers, but it is just taking a while longer than my other videos right now because there is so much knowledge I have to gain before I can speak intelligently about that topic haha! ;)
@subhadran99
2 жыл бұрын
@@GEOGIRL tanku da , iam doing my masters in geology. Iam in south india so i need to know better about abroad opportunities
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