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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