[meteorite-list] Question about Impact Glass from Crooked Creek
From: b1dunovant at aol.com <b1dunovant_at_meteoritecentral.com>
Date: Thu, 3 Oct 2013 09:45:21 -0400 (EDT) Message-ID: <8D08E55EFBE5AC5-22D0-4AD01_at_webmail-d276.sysops.aol.com> Hello Robert, Again, thank you for your reply and incormation regarding Crooked Creek.? I initially thought it was slag as well as it didn't fit with the materials I had found and documemted at the site, but then I recovered a large specimen of the same glass however it was transitioning from rock which has a quench-like texture. A couple days later I recovered additional material that had many of the same characteristics as the specimem in question, yet was stone had floating clast of the same material the glass transitioned from on the large specimen. I do not claim to know what this material beyond previous experience and visual correlation, ?but the large piece is quite an enigma as it has characteristics of a couple different specimens that are obviously stone and vise versa. I appreciate you responding to my question and hope that ?we can continue this dialog. My Best, Brandon D. -------- Original message -------- From: Robert Beauford Date: To: meteorite-list at meteoritecentral.com Subject: Re: [meteorite-list] Question about Impact Glass from Crooked Creek I have encountered this material during field work.? I have a sample in a box here beside my desk, along with a thin section.? My sample?was dominantly iron, with less glass and less bubbles, but looks?pretty clearly to be?the same thing.? I did some research on it a couple of years ago.? The metal portion has?no nickel content, and the silicate (glassy) portion is complex in composition, inconsistent with melting of the local carbonates, chert, or quartz arenite sandstones that are found in the brecciated or uplifted Crooked Creek rock units.??I believe it to be slag from local mining of iron (about 100 years ago)?within?the crater and throughout the region.? The mined iron is not associated with the meteorite impact.? It was emplaced along faults in the region by mineralizing hydrothermal activity, tens of millions of years later, that occurred during the Ouachita Orogeny.? They also mined for barite and several other things along faults in and around there.? I found evidence for the?timing and origin of mineralization associated with the mines recorded in some earlier work by a different author (I think it might have been Hendriks, 1954.)??I included?more details in?a published abstract, though I?don't recall how much.? Sorry...?it was disappointing for me as well. Best regards, Robert?Beauford -------- Original message -------- From: Brandon D.<b1dunovant at aol.com> Date: To: meteorite-list at meteoritecentral.com Subject: Re: [meteorite-list] Good Day/Night Fellow Listees. It's been some time since I have had a chance to get on the list and also present some new material to the collectors and researchers interested. I have had to deal with some serious personal family issues and this has weighted heavy on me as of late. Today I would like to get the word out that I have some new impact material of such quality that it should excite those who share my common interest and attention. It is not just the size, but also the scarcity. To some up what I have I am just going to list what I have below. Further specimens will be added over the course of the day so stay tuned as well! http://www.ebay.com/usr/meteor-rite 1) 469.2g endcut of full impact melt from the Crooked Creek, Missouri impact. 2) 39.5g Rare slice of possible impact or landslide melt in Kofels, Australia. 3) 1,123g corner cut of impact breccia from the Crooked Creek, Missouri impact. 4) 868.2g Huge slice of impact. Melt breccia from the Glover Bluff, Wisconsin impact site. 5) 441.7g. beautiful corner cut of the yellow type impact breccia from the Glover Bluff, Wisconsin impact site. I also have a piece of Meteorite art in the form of a Zoomorphic Campo that has been painted by an artist with oil paint. It was shaped and is now presented beautifully as a colorful chameleon. It was displayed in a display at a museum for some time and includes documentation from them as well as the artist. Again, my eBay listings can be viewed by following the below link. http://www.ebay.com/usr/meteor-rite ; Thank you and all the best, Brandon D. Good Day/Night Fellow Listees. It's been some time since I have had a chance to get on the list and also present some new material to the collectors and researchers interested. I have had to deal with some serious personal family issues and this has weighted heavy on me as of late. Today I would like to get the word out that I have some new impact material of such quality that it should excite those who share my common interest and attention. It is not just the size, but also the scarcity. To some up what I have I am just going to list what I have below. Further specimens will be added over the course of the day so stay tuned as well! http://www.ebay.com/usr/meteor-rite 1) 469.2g endcut of full impact melt from the Crooked Creek, Missouri impact. 2) 39.5g Rare slice of possible impact or landslide melt in Kofels, Australia. 3) 1,123g corner cut of impact breccia from the Crooked Creek, Missouri impact. 4) 868.2g Huge slice of impact. Melt breccia from the Glover Bluff, Wisconsin impact site. 5) 441.7g. beautiful corner cut of the yellow type impact breccia from the Glover Bluff, Wisconsin impact site. I also have a piece of Meteorite art in the form of a Zoomorphic Campo that has been painted by an artist with oil paint. It was shaped and is now presented beautifully as a colorful chameleon. It was displayed in a display at a museum for some time and includes documentation from them as well as the artist. Again, my eBay listings can be viewed by following the below link. http://www.ebay.com/usr/meteor-rite ; Thank you and all the best, Brandon D. Received on Thu 03 Oct 2013 09:45:21 AM PDT |
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