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Author: Subject: Pretty Pictures (2)
phlogiston
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[*] posted on 19-7-2020 at 15:23


A macro shot of an uranium mineral under short wave UV light.
The field of view is about 5 mm and the exposure time was 10 seconds, making this seem like a lot more than it actually is.

I found this rock in Germany a few years ago, in an old quarry from which low grade uranium ore (<0.1% U) was mined in the 60's. It registers about 4000 cpm with my Geiger-Muller tube, comparable to uranium glass.

What surprised me is that it fluoresces under short-wave UV, but not under long-wave UV. Under long-wave UV or normal light, no obvious U minerals can be distinguished.

Still not sure exactly what the mineral is, my current best guess based on the locality and this fluorescence is metaheinrichite (Ba(UO2)2(AsO4)2.8H2O), but regardless, I do enjoy finally being able to claim that I have extracted a tiny but visible amount of uranium from the earth myself. I'll be adding the rock to my element/mineral collection.

IMG_1202 copy.JPG - 421kB

[Edited on 19-7-2020 by phlogiston]




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[*] posted on 19-7-2020 at 22:22


That is some serious wallpaper quality picture, very nice!
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Fulmen
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[*] posted on 19-7-2020 at 23:18


Are you sure that's not the Andromeda strain?



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phlogiston
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[*] posted on 20-7-2020 at 16:24


Belowzero, I was pleasantly surprised by the picture quality too, considering I used a 12-year old simple 'compact' camera

I'm in the market for a new camera. Any recommendations?
I'd preferably have something versatile. Sometimes I want a macro shot like I posted, but sometimes I want to zoom in on something distant, and most often I just want to quickly take a nice, but well-focused and high-resolution picture or video of my family.

[Edited on 21-7-2020 by phlogiston]




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violet sin
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[*] posted on 22-7-2020 at 20:10


I got a couple min to set up a tripod, clip on lense and my phone from the back yard. This was a few nights ago.

IMG_20200719_222902676.jpg - 5.4MB IMG_20200719_223551451.jpg - 2.5MB
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[*] posted on 22-7-2020 at 23:37


That's pretty cool, VS.
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violet sin
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[*] posted on 23-7-2020 at 06:40


Here are a couple from last night. Not as good, it's quit a bit dimmer now. Our sky had haze and it didn't help at all. This is 8x magnification on top of what ever my phone does.

IMG_20200722_231014587.jpg - 1.9MB IMG_20200722_230257131.jpg - 1.9MB IMG_20200722_225727503.jpg - 3.9MB

Took quit a bit of fiddling to get it right. The set up was not ideal. At one point the clip dropped my phone with lense clipped on... To concrete on edge of pool.. happy bounce away from the water softener by my foot.

I had trouble seeing it this time. The other day it was easy to see. My 6 year old spotted it right away. Now I don't think so. Anyone have better luck than I?

[Edited on 24-7-2020 by violet sin]

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Nothing I could get. Either I missed it or it's too dim for the tiny clip on lense.

[Edited on 24-7-2020 by violet sin]
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Herr Haber
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[*] posted on 23-7-2020 at 09:56


Quote: Originally posted by phlogiston  
It registers about 4000 cpm with my Geiger-Muller tube, comparable to uranium glass.


Err, a lot more I would say !
My hottest piece of uranium glass gives around 400 cpm


Quote: Originally posted by phlogiston  

What surprised me is that it fluoresces under short-wave UV, but not under long-wave UV. Under long-wave UV or normal light, no obvious U minerals can be distinguished.


Same surprise when I asked the dentist to use his UV light.
You should watch Nile Red's video on making uranium glass if you havent already it is both interesting and surprising imho.




The spirit of adventure was upon me. Having nitric acid and copper, I had only to learn what the words 'act upon' meant. - Ira Remsen
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CharlieA
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[*] posted on 23-7-2020 at 15:17


VS: great pix! great job!:)
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phlogiston
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[*] posted on 24-7-2020 at 03:44


Quote: Originally posted by Herr Haber  
Quote: Originally posted by phlogiston  
It registers about 4000 cpm with my Geiger-Muller tube, comparable to uranium glass.


Err, a lot more I would say !
My hottest piece of uranium glass gives around 400 cpm


The number of counts is very dependent on the GM tube you use, so we probably have very different tubes. Different uranium glass too, probably.




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[*] posted on 26-7-2020 at 02:45


Not for the faint hearted; 6g of diiodo-acetylene recrystallised from dichloromethane:-

Diiodoacetylene from dichloromethane.jpg - 117kB
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[*] posted on 28-7-2020 at 16:26


Pure hydrogen cyanide

1.jpg - 89kB







My youtube channel: Joe Black
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j_sum1
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[*] posted on 28-7-2020 at 17:48


Quote: Originally posted by Pok  
Pure hydrogen cyanide

Looks nice inside the ampoule!
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[*] posted on 28-7-2020 at 20:19



Had a bit of NOx build up during ethyl nitrite synth.Picture does it no justice.


nox.jpg - 507kB

no2.jpg - 645kB




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[*] posted on 28-7-2020 at 21:07


Nice rack Arky.
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arkoma
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[*] posted on 28-7-2020 at 21:13


Quote: Originally posted by j_sum1  
Nice rack Arky.


ROFLMAO.




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[*] posted on 31-7-2020 at 21:19


Cheapest chromatography column ever- 4 cm of calcium carbonate, using hexanes (then 9:1 hexanes/ethyl acetate) as an eluent separated carotenes from chlorophylls perfectly.

ChromPipette1.jpg - 118kB




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[*] posted on 1-8-2020 at 22:52


Copper glycinate crystallising out on the steam bath.

9DF85A78-EDD0-4D14-ABEC-208D37DAD7DB.jpeg - 2.4MB
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[*] posted on 3-8-2020 at 15:38


working on HMTA and HCl to CH3NH2 HCl

methylamine.jpg - 64kB




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[*] posted on 4-8-2020 at 18:24


A cobalt glycinate salt drying on the steam bath. The few glassy crystals is probably the slight excess of glycine.

4342AEF7-5AEA-49DF-A6ED-B6A78D5DB97A.jpeg - 2MB
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[*] posted on 5-8-2020 at 18:54


Salt formed from reacting nickel carbonate with glycine crystallising out on the steam bath. Hope it stays blue as it dries!

D112BF42-7854-40F1-AE4F-5E3C74700961.jpeg - 1.7MB
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[*] posted on 2-9-2020 at 17:45



I stumbled across this website that shows pictures of many compounds. This will be a useful resource for me as I am always trying to make different colors :) How accurate it is I do not know but at least for copper it seems in the ballpark.

https://onyxmet.com/index.php?route=information/periodic_tab...

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[*] posted on 2-9-2020 at 22:11


Ammonia gas passing above lithmus solution.

am1.jpg - 236kBam2.jpg - 332kB
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[*] posted on 3-9-2020 at 07:26


Cyan copper...





cian_Cu.jpg - 304kB
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[*] posted on 16-9-2020 at 15:10


Wet crystals of Tin ii iodide

B9C81861-9B2E-4865-AEC7-589D9BF5B86F.jpeg - 326kB
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