2 replies to this topic

[Glassthrower]

Hi Friends and Cloudy Nighters,

 

It's been years since I have had a batch of meteorites like this. If you are looking for some attractive and affordable meteorites for your outreach or educational project, then I have the perfect space rocks for the job.

 

NWA 869 stony meteorites were recovered out of the Algerian Sahara just before the turn of the century and they are a classic meteorite for collectors. They look and feel the way a meteorite should, and they are priced well below the current market price.

 

NWA 869 meteorites like these typically sell for $1 per gram and up. I am offering them at half that price when you use your Cloudy Nights coupon code discount.

 

To get 20% OFF and bonus freebies, use coupon code "cloudynights" at checkout.

 

You can see all of fhe new meteorites at this link : https://galactic-stone.com/brand-new/

 

Feel free to hit me up with any questions you might have.

 

Thanks for looking and clear dark skies!

 

MikeG

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Edited by Glassthrower, 06 April 2024 - 06:45 AM.

[Kimsfx]

Hi Glassthrower.  

 

   I do have a question that is actually giving me some reason to be cautious with my Toluca.  I purchased this Toluca in 1978 and for the longest time it was in excellent condition packed away in a sealed airtight clear case.  Until.... about 10 years ago the seal broke from time in the safe and then what you see is oxidation that has gradually eating away at the meteorite. 

 

Do you have any suggestions to halt this process and should I go after the center portion to remove the rust/oxidation or leave the Toluca alone and seal it once again in a nitrogen filled clear case? Any advice is welcome. 

[Glassthrower]

Hi Glassthrower.  

 

   I do have a question that is actually giving me some reason to be cautious with my Toluca.  I purchased this Toluca in 1978 and for the longest time it was in excellent condition packed away in a sealed airtight clear case.  Until.... about 10 years ago the seal broke from time in the safe and then what you see is oxidation that has gradually eating away at the meteorite. 

 

Do you have any suggestions to halt this process and should I go after the center portion to remove the rust/oxidation or leave the Toluca alone and seal it once again in a nitrogen filled clear case? Any advice is welcome. 

Hi Kim,

 

Nice specimen with a good etch. It is a pity that it is oxidizing. There are things that can be done to stabilize the specimen. If you have the means to do so, you can use electrolysis to completely stop the oxidation in it's tracks, but it's a long process that requires some setup and materials.

 

On a shorter timeframe that is less resource intensive, you can give some first aid to the specimen. You can use a wire brush and pencil eraser to remove surface rust. Don't get too aggressive with the wire brush though, or you will scratch up the etch. Once you remove the surface rust, put it in an oven for several hours to purge trapped moisture. (about 200F - no hotter than that or you may damage the etch). For a chunky cut like that, I'd put it in there for about 12 hours. Let it cool and put it back in a sealed container with fresh dessicant. Keep an eye on it after that. If it continues to rust, you may need to use electrolysis.

 

Best regards,

 

MikeG