24 replies to this topic

[leonardovaller]

Love its shape

 

[Jethro7]

Hello,
I like these Campo's awesome meteorites.

HAPPY SKIES TO YOU AND KEEP LOOKING UP Jethro

[B 26354]

I feel exactly the same about my little 23.3g Henbury:

 

 

[Paul Hyndman]

Love its shape

Very nice!

 

My 1.8kg Campo simply looks like an overcooked  baked potato.

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[Glassthrower]

That's a really nice example of a small Campo. You don't see them like that too often any more. 

[leonardovaller]

Very nice!

 

My 1.8kg Campo simply looks like an overcooked  baked potato.

Nice.

Are those black stains rust or graphite?

[Jethro7]

Hello Cners,
Here is my favorite Campo, any way Im 99% sure its a campo. It was being used as a door stop when I found and bought it. It weighs in at 7.031Kgs. It looks a little neglected and  needs a clean up.

 

HAPPY SKIES AND KEEP LOOKING UP Jethro

 

[bigdob24]

Here’s one I acquired recently 

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[leonardovaller]

Here’s one I acquired recently 

Nice.

And nice arrow heads collection too.

[lee14]

Nice.

Are those black stains rust or graphite?

If the black color is not merely a photographic artifact, the material is most likely silicates mixed in with the nickel-iron. This is quite common in Campos, but the silicates are usually more isolated and discrete. If it has a 'grainy' texture, is hard but not tough, silicated material is the answer.

 

Lee

[Paul Hyndman]

Nice.

Are those black stains rust or graphite?

Oops, gotta' get out the WD40... that's rust!

[lee14]

Oops, gotta' get out the WD40... that's rust!

No, it's not. It's silicated material. Look at the two ground faces and the common edge. The black material and clear metal compose the matrix that extends deep into the interior. Rust is limited to the surface on this Campo, as is generally the case.

Lee

[leonardovaller]

If the black color is not merely a photographic artifact, the material is most likely silicates mixed in with the nickel-iron. This is quite common in Campos, but the silicates are usually more isolated and discrete. If it has a 'grainy' texture, is hard but not tough, silicated material is the answer.

 

Lee

Could it be the same case with this Canyon Diablo I got and polished?

 

 

[lee14]

 

Could it be the same case with this Canyon Diablo I got and polished?

 

In a Canyon Diablo those are more likely to be graphite, or even troilite. Silicated material is not typically found in CD's.

 

Lee

[Paul Hyndman]

Here’s one I acquired recently 

Ahhh, someone else with a love for arrowheads/artifacts!

 

A few of mine:

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[Paul Hyndman]

If the black color is not merely a photographic artifact, the material is most likely silicates mixed in with the nickel-iron. This is quite common in Campos, but the silicates are usually more isolated and discrete. If it has a 'grainy' texture, is hard but not tough, silicated material is the answer.

 

Lee

 

No, it's not. It's silicated material. Look at the two ground faces and the common edge. The black material and clear metal compose the matrix that extends deep into the interior. Rust is limited to the surface on this Campo, as is generally the case.

Lee

I only have a few meteorite samples and have a lot to learn... thanks for the info, Lee.
 

[lee14]

Ahhh, someone else with a love for arrowheads/artifacts!

 

A few of mine:

Nice points collection!

 

Lee

[bigdob24]

Here’s a few more

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[bigdob24]

Jethto7

My Campo started showing a little bit of rust, I did some checking around and decided on a Automatic Transmission Fluid bath.

Found a container that the Campo just fit and covered it in very warm ATF and let it soak awhile, places that showed rust got a careful soft bristle brushing “tooth brush” then let it drip dry and whipped with a soft cloth and back on display.

[leonardovaller]

Here’s a few more

Hey, may I send you a private message? Maybe you could help me with this african arrowhead I got from a french dealer. Thank you.

[scottinash]

I have been recently going through my collection which has been stored away for several years.  Here's my Campo.  550g Polished End cut

 

 

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[leonardovaller]

I have been recently going through my collection which has been stored away for several years.  Here's my Campo.  550g Polished End cut

Such a beautiful specimen. Do you plan to etch it or leave it as is?

[scottinash]

Such a beautiful specimen. Do you plan to etch it or leave it as is?

I have had it for probably sixteen years or so and had not given much to consideration to etching until you just suggested.  Hmmmmm 

[lee14]

If the specimen is as blemish-free as the pictures appear, it was properly stablished prior to polishing. I would leave it as it is. Whether polished or etched, when properly prepared (i.e. terrestrial chlorides have been removed, by either chemical or electrolytic means), the finished surfaces may need their protection renewed. For etched surfaces, G-96 brand gun oil is highly recommended (though some are advocates of transmission fluid). Preventing oxidation on a polished face is best accomplished by a metal polish containing rust inhibitors, such as Flitz.

 

Whatever you're doing or not doing, the results speak for themselves, it's a beautiful specimen!

 

There is of course the option of etching only a single face and leaving the remaining polished surfaces as they are. Personally though, I'd leave it as is; 'if it ain't broke, don't fix it'.

 

Nice piece, thanks for sharing!

 

Lee

[scottinash]

If the specimen is as blemish-free as the pictures appear, it was properly stablished prior to polishing. I would leave it as it is. Whether polished or etched, when properly prepared (i.e. terrestrial chlorides have been removed, by either chemical or electrolytic means), the finished surfaces may need their protection renewed. For etched surfaces, G-96 brand gun oil is highly recommended (though some are advocates of transmission fluid). Preventing oxidation on a polished face is best accomplished by a metal polish containing rust inhibitors, such as Flitz.

 

Whatever you're doing or not doing, the results speak for themselves, it's a beautiful specimen!

 

There is of course the option of etching only a single face and leaving the remaining polished surfaces as they are. Personally though, I'd leave it as is; 'if it ain't broke, don't fix it'.

 

Nice piece, thanks for sharing!

 

Lee

Thanks, Lee.  Reasonable advice which I think I'll follow.  Plus, I already have a few other etched specimens in my collection.