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Author: Subject: Pretty Pictures (2)
crystal grower
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[*] posted on 26-8-2016 at 12:53


Quote: Originally posted by Velzee  


He's back! Welcome back!

Yes, as DraconicAcid said, I made an attempt at potassium ferrioxalate, but I forgot to account for the stoichometry when I replace KOH with K2CO3, thus excess contaminates remained.

Lol thanks Velzee :D.
Actually I still check sm from time to time. Summer holidays are just too busy :D.




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fluorescence
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[*] posted on 2-9-2016 at 08:52


Hopefully some Vanadium(II)

Vanadium II.jpg - 73kB
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[*] posted on 2-9-2016 at 13:43


This was an experiment for storing sodium short term without an oxide layer and to get pictures for ebay ads.

30 grams of Sodium was made molten inside a bath of mineral oil, I believe paraffin oil, and then injected into room temperature, 70°F (~21°C), oil using an all glass 10mL syringe.

I have been trying several different techniques to get uniform sizing and the middle section, where it looks the best, is what I described above. The bottom 1/4 of the vial I used cold oil 50°F (10°C). The top 1/4 of the jar was hot oil, 100°F (~38°C).

**SAFETY NOTES**
I learned the hard way that molten sodium will fall out of the syringe as soon as it points just 1° below 180° luckily it bounced off my finger and didn't do more damage. In the gallery you'll see the Pea size blister on the tip of my pinky finger.

Clean sodium catches fire much easier, especially when shiny and molten.

-------------------

Beaded Sodium Gallery ~ 8 more pics

-------------------

zwMpJwam.jpg - 22kB

prreZPsm.jpg - 17kB

Beaded Sodium Gallery ~ 8 more pics

[Edited on 2-9-2016 by Arg0nAddict]




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BobD1001
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[*] posted on 2-9-2016 at 16:43


Absolutely beautiful Arg0nAddict!
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[*] posted on 2-9-2016 at 21:46


Gorgeous.
I think the variable size adds to the aesthetic. And probably makes it more usable -- if you are using it for more than just a display.




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[*] posted on 6-9-2016 at 20:07


https://www.youtube.com/watch?v=iRTDf4m6V0k

Not a pretty photo but it is my adaptation of the dancing sodium reaction. The music is important as I think you all will enjoy it.




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[*] posted on 9-9-2016 at 21:26


Here's some more sodium, which is best?

fcj1Od2.jpg - 2.2MB

tS1XoWo.jpg - 2MB

2HyVILt.jpg - 1.3MB




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crystal grower
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[*] posted on 9-9-2016 at 22:07


Third one IMO, but they are all pretty pictures :D.



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[*] posted on 10-9-2016 at 15:49


I made this one as a birthday gift for a friend; it is a two week old potassium ferricyanide crystal.

image.jpeg - 1.5MBimage.jpeg - 1.8MB




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[*] posted on 10-9-2016 at 16:23


beautiful!



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[*] posted on 10-9-2016 at 21:08


That is mighty impressive, nice! What an awesome gift.

[Edited on 11-9-2016 by violet sin]
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[*] posted on 11-9-2016 at 05:56


How did you make it? Slow evaporation with a seed crystal, or something like that?



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[*] posted on 11-9-2016 at 18:09


Yeah my current potassium ferricyanide crystals aren't coming out yet. It's like they're neither growing or dissolving.
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[*] posted on 14-9-2016 at 01:57


Quote: Originally posted by Metacelsus  
How did you make it? Slow evaporation with a seed crystal, or something like that?


Yep!

@Fidelmios how long have you had the solution left out?




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[*] posted on 15-9-2016 at 05:50


So we took a thermal image of a cup of coffee and saw these darker spots which always move in thise kind of net shapes on the surface.
I changed the colors so it becomes easier to see and added some temperatures so you can see the difference. For some reason these spots are around 3-4°C cooler than the rest of the coffee.

I think it might be the oils which are hydrophobic and collect on the surface but as oils dont evaporate that easily the stay longer on the surface and can therefore cool off a bit which makes these spots colder. At first I thought it was only a minor temperature difference but when I looked into the data I saw that there is a surprising temperature difference. Any idea ? I waited till the surface was perfectly still and most of the boiling and fuming was over before I took the image.



Coffee Thermal.jpg - 45kB
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[*] posted on 15-9-2016 at 07:16


Quote: Originally posted by fluorescence  
So we took a thermal image of a cup of coffee and saw these darker spots which always move in thise kind of net shapes on the surface.
I changed the colors so it becomes easier to see and added some temperatures so you can see the difference. For some reason these spots are around 3-4°C cooler than the rest of the coffee.

I think it might be the oils which are hydrophobic and collect on the surface but as oils dont evaporate that easily the stay longer on the surface and can therefore cool off a bit which makes these spots colder. At first I thought it was only a minor temperature difference but when I looked into the data I saw that there is a surprising temperature difference. Any idea ? I waited till the surface was perfectly still and most of the boiling and fuming was over before I took the image.



They look like the tops of convection cells.
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[*] posted on 15-9-2016 at 07:38


Quote: Originally posted by mayko  
These lovely blue mushrooms pop up around this time of year. Turns out, they also bruise a lovely green color!

Incidentally, does anyone have protips on preserving mushrooms? I tried putting this one in a closed container with some CaCl2 but it just got slimy and grungy...



It's a breakdown product of the psilocybin. Sun dry them, then freeze. (Have experience this area; they're worth $240/OZ in California. Idiots)




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[*] posted on 15-9-2016 at 10:45


Maybe you can repeat the experiment after adding a drop of soap? That could test your hypothesis.
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[*] posted on 15-9-2016 at 11:23


Quote: Originally posted by arkoma  
Quote: Originally posted by mayko  
These lovely blue mushrooms pop up around this time of year. Turns out, they also bruise a lovely green color!

Incidentally, does anyone have protips on preserving mushrooms? I tried putting this one in a closed container with some CaCl2 but it just got slimy and grungy...



It's a breakdown product of the psilocybin.


???

Wikipedia says the blue pigment is an azulene derivative:



https://en.wikipedia.org/wiki/Lactarius_indigo#Chemical_comp...




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[*] posted on 15-9-2016 at 13:09


generally only Psilocybe or Stropharia stain that weird blue-green colour when bruised. Mmm, This genus too. I have a dab of *ahem* up close and personal experience with these particular fungi.



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[*] posted on 15-9-2016 at 14:32


Quote: Originally posted by arkoma  
protips on preserving mushrooms? I tried putting this one in a closed container with some CaCl2 but it just got slimy and grungy...

Treat them like anything you want to keep oxygen and water away from.

Sun-dry first (if you got Lotsa Sun) or/then bag with a jar of a water sucker.

E.g. NaOH, K3PO4, conc sulph acid, shop-bought rice, some table salt etc.




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[*] posted on 23-9-2016 at 15:03


My new crystal specimens:

Xylitol
DSC02236.JPG - 553kB

Saccharin (sodium salt)
dsc02449.jpg - 526kB
Saccharin is not sold anywhere nearby me, so I managed to extract it from the cyclamate-based sweetener (usually containing 90% of Na cyclamate and 10% of saccharin). Compound for this photo was extracted from 210g of sweetener, that gave me 18g of saccharin (not a bad yield I think). As a byproduct, I now have 180g of recrystallized sodium cyclamate, and no idea what to do with it.

Potassium zinc sulfate K2Zn(SO4)2*6H2O
dsc02400.jpg - 563kB
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[*] posted on 23-9-2016 at 22:56


Wow, really amazing crystals Dmishin!
Are all of these crystals products of slow evaporation?
And if yes, how long did it take to grow them?
Thanks for answer




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[*] posted on 24-9-2016 at 00:44


Quote: Originally posted by crystal grower  
Are all of these crystals products of slow evaporation?
And if yes, how long did it take to grow them?

Yes, all grown by evaporation. Growth time is from 2 to 4 weeks, depending on sample. By the way, due to tilt shift effect, xylitol crystal seems small, but it is actually 4cm wide.
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[*] posted on 24-9-2016 at 00:55


Hmmm, I've never grown xylitol crystals. I ought to try it ;).



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