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lee14
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Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: lee14]
      #6069825 - 09/08/13 04:07 PM Attachment (6 downloads)

and the reverse...

Edited by lee14 (09/08/13 04:10 PM)


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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: lee14]
      #6069852 - 09/08/13 04:23 PM Attachment (6 downloads)

This is a 43 gram Canyon Diablo showing some of that metallic sheen that's so elusive to capture.

Lee

Edited by lee14 (09/08/13 04:26 PM)


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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: lee14]
      #6069866 - 09/08/13 04:32 PM

Those are great photos Lee and really show the etch well. Yes that 1st slice in this thread is from jlacroix1 on ebay. The 2nd one is just a picture I found somewhere online for comparison purposes. The 3rd one is a Gibeon from jlacroix1 that I ended up buying. It was not inexpensive but half the price of a Muonionalusta that I was considering. The one at the top of this thread I think was $719 but it was a thick end cut 820 grams.

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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: lintonius]
      #6069881 - 09/08/13 04:39 PM

Lintonius- If you want to attempt to re-etch only one face, you can protect the other side with blue painters tape. Butt the seams tightly rather than overlapping, and press the tape firmly onto the surface making sure it's securely adhered at the edges. Sand the surface with 600 grit wet/dry automotive type sandpaper, keeping all the lines straight in one orientation only. The paper fills up quickly, so keep fresh abrasive on the surface. You're trying for a uniform hazy polish. The concentration of your etchant should be such that it takes a couple of minutes for the process to complete, any quicker and it's difficult to control resulting in too dark an etch.

Lee


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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: lee14]
      #6069895 - 09/08/13 04:46 PM

Lee--I thought those pics looked familiar and I recalled that I had seen them on ebay. I found your page again and you have some very nice ones. I'll have to keep an eye out. I feel like I am reaching my limit right now though. I have bought more than I thought I would and am really caught up in this. This Canyon Diablo looks interesting with the black marks in it, different than most I think. I like it.

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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: lee14]
      #6069908 - 09/08/13 04:52 PM

Kent- I've never bought any etched material from lacroix, just whole Campos, but it looks like very nice work. At around a dollar a gram it would be very difficult to do better. He's apparently buying an enormous amount of material and getting a nice low starting price. Ten years ago whole Gibeons and Muons could be had for less than 20 cents a gram, and that's not very likely these days. The export of Gibeons has been illegal for a number of years, and that's contributed quite a bit to the desireability of Muons.

Lee


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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: lee14]
      #6069945 - 09/08/13 05:12 PM

I must apologize for my inadequate photographic skills Kent. What appear as black marks are in fact highly reflective and silver colored. They either reflect all the light right back, or in another direction entirely, thus appearing dark. There are a few at the top of the specimen that look silver, the rest are mirror-like as well from the proper angle. Canyon Diablos are a really unique variety to deal with. The appearance can vary from a medium octahedrite (although it's classified as coarse) to an almost featureless gray matte surface after etching. The main mass suffered some really extreme shocking around impact, and this tends to mute or even eliminate the Widmanstatten pattern. In addition there can be a fair amount of carbon in Diablos, often presenting as graphite nodules, which are very desireable to collectors. There can also be an amount of microscopic diamond in the material, either already present before impact, or the formation was exacerbated from the carbon under extreme pressure at impact. These are the most difficult irons I've ever tried to cut, and the only ones that absolutely require a diamond blade.

Lee


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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: lee14]
      #6069956 - 09/08/13 05:22 PM Attachment (6 downloads)

This is an unetched 42 gram Canyon Diablo, I left it at a high polish because I just liked the look. There are a couple of bands near the upper edge; if it was etched, these would remain bright.

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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: lee14]
      #6069968 - 09/08/13 05:31 PM Attachment (6 downloads)

And finally, a 161 gram Canyon Diablo that looks more like a medium octahedrite. The interesting feature of this one though is how impact stress caused the crystal plates to warp and curve, resulting in a really unique Widmanstatten pattern.

Lee

Edited by lee14 (09/08/13 05:33 PM)


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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: lee14]
      #6070004 - 09/08/13 05:56 PM

Lee--I think your photography is beautiful and I remembered looking at your pieces. It must be difficult to get a picture of just the way it looks in person. I really like that high polish one too. The cracks add to the features. I also like that cubed one you have for sale.

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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: Kent10]
      #6070019 - 09/08/13 06:07 PM Attachment (6 downloads)

Thanks Kent. As when imaging more conventional subjects, I take a lot of exposures and dump most of them. It's certainly an easier task with digital imaging than with film. Just one more pic for now, a 31 gram Mundrabilla. A really unique etch, and a very hard stone. You can see a bit of the crust, it too has a nice reddish patina and is a very stable variety. Seemingly hard to come by these days, their export (Austalia) has been prohibited as well. Lee

Edited by lee14 (09/08/13 06:15 PM)


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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: lee14]
      #6070025 - 09/08/13 06:13 PM Attachment (5 downloads)

Oh wow. I like that one. I didn't know they were hard to get. It looks like I have one coming from Germany any day now.

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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: Kent10]
      #6070026 - 09/08/13 06:14 PM Attachment (5 downloads)

Other side

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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: Kent10]
      #6070036 - 09/08/13 06:19 PM

Ooops. That is a corner Campo del Cielo of yours that I was looking at. Not a cube. There is a difference.

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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: Kent10]
      #6070038 - 09/08/13 06:20 PM

Nice! This is another variety that seems to etch best after bringing the surface to a high polish. There are a number of very good German dealers. One I like alot is Gipometeorites (ebay).

Lee


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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: lee14]
      #6070074 - 09/08/13 06:46 PM

Lee-- I just bought that corner piece. I really need to be done buying soon . I did tell my wife I was buying several meteorites and she thought I was spending thousands so I do feel better because actually it is just 100's but I think must be going over 1000 easily by now. It is fascinating though.

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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: Kent10]
      #6070076 - 09/08/13 06:47 PM

I'll have lots of ebay bucks soon so I'll be able to get a small one for free

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Kent10
scholastic sledgehammer
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: Kent10]
      #6070082 - 09/08/13 06:51 PM

I remember looking at Gipometeorites. He does have some nice slices. I bought some from mirko66 and donnersteine.

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lee14
super member


Reged: 12/19/09

Re: Best Etched Meteorites? new [Re: Kent10]
      #6070222 - 09/08/13 08:41 PM

Yes, Gipometeorites has developed some good sources for his NWA material. I know him personally, although we haven't corresponded in a while. A really nice guy though. Mirko66 I'm familiar with, I think I may have bought from him in the past. Donnersteine is unfamiliar.

Lee


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Kent10
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Reged: 05/08/12

Re: Best Etched Meteorites? new [Re: lee14]
      #6070235 - 09/08/13 08:53 PM

Donnersteine seems to specialize in GEBEL KAMIL

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