[meteorite-list] iron meteorite natural color

[Mattias Bärmann]

For the ultimate oriented-look, dear Marcin, it might be recommendable 
to use a chainsaw.


Am 24.11.2016 um 23:42 schrieb Marcin Cimała - POLANDMET via Meteorite-list:
>> Hello,
>> I have a question.
>> As we know an iron meteorite, such like Campo del Cielo for example, 
>> have a black surface.
>> I have here a deeply rusted Campo, I'm planning to remove rust with a 
>> sand blasting process.
>> But with this I will obtain a greysh surface, like naked iron, the 
>> same color of a slice.
>> Not really a natural color for the exterior of an iron meteorite and 
>> also not aestetically pretty, looks too artificial for me.
>> There is something to do for restore the original black color?
>> Or it's better to remove the rust with a traditional steel brush, 
>> maybe with a drill ???
>>
>> Tips for mechanical or chemical process are welkomme!!!
>> I can try with the classical NaOh bath, I have also Phosphoric, 
>> Citric and Oxalic acid :)
>>
>> Thanks
>> <x>x<x>x<x>
>> Francesco
>
> Hah good question Francesco. But what is natural color of meteorite at 
> all ? Desert sandblasted NWA is not a real looking meteorite? Should I 
> paint them black to be looking like a real meteorites ? Poor Dhofars....
> This is what Im fighting long time. Strange stereotype that meteorite 
> MUST BE BLACK outside, WHY ?
>
> When You like Your girlfrend ? When he smile to You with his pretty 
> face or when she put ton of Max Factor chemicals on it??
>
> I have always strange taste, different than most of collectors. For 
> me, if specimen have crust must be black or black with rusty patina. 
> If meteorite have no more crust like Campo, why to "paint" it to black 
> to looks like Sikhote ? Then You will see paint, not Your meteorite. I 
> only can imagine what strange things they do to clean Campo and look 
> it like that. LOL
>
> OK now a few tips.
> As I understand Your Campo is a complete specimen ? To remove deep 
> rust You must use electrochemical cleaning + brush + small hammer. 
> Then You will get mostly cleaned meteorite with BLACK remains of rust 
> that will make Your meteorite looks REAL.Then heat it and put alot of 
> oil to make it looks fresh and oriented :)
>
> -----[ MARCIN CIMALA ]----[ +48 793567667 ]-----
> http://www.Meteoryty.pl             marcin(at)meteoryty.pl
> http://www.PolandMET.com       marcin(at)polandmet.com
> --------[ Member of Polish Meteoritical Society ]--------
>
>
>
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