jamesp
Cave Dweller 
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 28, 2015 8:42:30 GMT -5
snowmom I cheated and snuck a piece of your black impactite and put it in the vibe with an obsidian run. Should go into polish soon.
|
|
|
|
Post by snowmom on Jan 28, 2015 8:53:18 GMT -5
ooooh I want to see that! I suspect it will undercut, but it will be good to know what it does, eh? Thank you!
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 28, 2015 10:07:47 GMT -5
|
|
|
|
Post by gingerkid on Jan 28, 2015 10:18:29 GMT -5
snowmom I cheated and snuck a piece of your black impactite and put it in the vibe with an obsidian run. Should go into polish soon. ROFL, jamesp. Love the color and patterns in the triangular piece in your pics. Is that the one you snuck into your vibe? |
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 28, 2015 13:35:38 GMT -5
ooooh I want to see that! I suspect it will undercut, but it will be good to know what it does, eh? Thank you! Not undercutting, it did the way I rough tumbled it, but the SiC 220 in the vibe skinned it off. Looks great. it is very attractive. Hoping for a nice polish. Very attractive stone. One of my favorites |
|
|
|
Post by snowmom on Jan 28, 2015 13:41:32 GMT -5
tease!
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 28, 2015 13:50:25 GMT -5
Judge for yourself 1" X 2", and the brown stuff on the left is the weathered part that stained. Lots of metallic(nickel) specks  |
|
|
|
Post by snowmom on Jan 28, 2015 13:57:46 GMT -5
shines like a jewel!!!  |
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 28, 2015 14:00:36 GMT -5
shines like a jewel!!! It is wet, for the photo shoot, not polished yet, just 220 finish. |
|
|
|
Post by snowmom on Jan 28, 2015 14:02:54 GMT -5
so from this we could maybe deduce the matrix is some sort of melt glass, maybe? We suspected as much already.
Thanks Jamesp! Love it!
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 28, 2015 14:06:40 GMT -5
so from this we could maybe deduce the matrix is some sort of melt glass, maybe? We suspected as much already. Thanks Jamesp! Love it! The green section looks like glass, sure does. Lot of slag glass from metal smelting is that color. |
|
|
|
Post by snowmom on Jan 28, 2015 14:12:12 GMT -5
would be so interesting to get all those rock fragments analyzed and defined... each piece of onaping a soul would find is likely to be different, but this one with that blue in there is special. Never saw one like that in all the photos online. Nothing else quite like it here either, (except the giant slab you sent back to me, thanks) Pretty dang cool! Hoping to learn more as time goes on. (now this is what I call FUN)
|
|
Deleted
Deleted Member
Member since January 1970
Posts: 0
|
Post by Deleted on Jan 28, 2015 17:57:28 GMT -5
Not glass. Far too hard.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 28, 2015 19:28:24 GMT -5
Sudbury Onaping The impact at Sudbury created a nuclear bomb like mushroom cloud. Onaping is a lithified fallback breccia composed of melt glass and country target rock fragments from this mushroom cloud. An ejecta blanket of debris hundreds of yards (meters) deep. "Bucky Ball Fullerine" with terrestrial carbon in the form of C-60 and C-70 is found in this type of Sudbury impact rock. Greenish-Blueish dust covered Tektites can also be found within its matrix. www.meteorite-times.com/Back_Links/2002/June/colectors_corner.htmThat black rock is a smorgasbord. Tektites, nickel apparently from the meteorite, rare metals, what's next. Of all the Sudbury impactites I have studied, this one has the highest levels of meteor impact evidence. It may be that one of your local geologists that studies this impact site should have a slab of this particular rock in his hands. |
|
|
|
Post by fantastic5 on Jan 28, 2015 20:28:00 GMT -5
would be so interesting to get all those rock fragments analyzed and defined... each piece of onaping a soul would find is likely to be different, but this one with that blue in there is special. Never saw one like that in all the photos online. Nothing else quite like it here either, (except the giant slab you sent back to me, thanks) Pretty dang cool! Hoping to learn more as time goes on. (now this is what I call FUN) I am taking a piece with the melt rings around blue that I picked up at jamesp and the pieces you sent me to Wayne at the university on Friday afternoon. I am excited to see what he has to say and I will let everyone know what he figures out as soon as he tells me. |
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 29, 2015 2:45:00 GMT -5
The impactite is the single most interesting rock I ever owned. This rock lured me into studying it.
Actually more interesting than a meteorite since it appears to be a mix of meteorite and the earth.
It has basic components that make it understandable and believable, many bits of evidence molded in rock.
A cross section of a cataclysm.
cataclysmic (not comparable)
Of or pertaining to a cataclysm; causing great destruction or upheaval; catastrophic. [quotations ▼]
It is believed that a cataclysmic impact caused the extinction of the dinosaurs.
There have been just over 1000 tektites found in a section of Georgia(they are very rare).
They are said to have landed here from an impact in Chesapeake Bay go figure.
Is it possible that this one rock is loaded with tektites ? And nickel from another world ?
It is a big deal, it has it's own geology.
How valuable are artifacts from space, and this fairly common rock is packed full of them.
Looking forward to what the experts say.
The meteor experts sure have an opinion with little disagreements.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 29, 2015 3:03:35 GMT -5
Notice in the photo above, specks of what looks like nickel in the larger blue/green piece.
|
|
|
|
Post by snowmom on Jan 29, 2015 6:13:56 GMT -5
Jamesp It is awesome, and so glad you have it and cut it so we all can learn from it.
I feel like that about most of the "unexplainable" things I find here, that fascination... learning how to understand what they have to tell us has drawn me deeper into the rock
hobby than I ever dreamed. Loving the learning, never bored, so happy to have rock friends who share this
passion,( spouse yawns when I say "Look at this!!!") I am so excited over the discoveries and learning you all have made possible. Just want to say thanks.
|
|
|
|
Post by snowmom on Jan 29, 2015 6:17:02 GMT -5
fantastic5 Ann I hope Wayne can tell us what those blue pieces in there are... the anticipation is like Christmas when I was a little kid... picture the bunch of us anxiously waiting for the big day. the feeling is the same.
|
|
jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
|
Post by jamesp on Jan 29, 2015 9:46:25 GMT -5
Found more about the black Onaping impactite: This sample not from snowmom's cobble, but attached to the article below it:  "Impact Melt Rock ... As is the case with certain other known impact sites, an unusual type of material referred to as impactite, melt glass or melt rock is found at the Sudbury astrobleme. At Sudbury this material occurs in a broad format range. As associated with only the biggest and most catastrophic impacts on earth, large meltsheets or meltbodies exist around the Sudbury structure. These tell-tale remnants of a time when rock became fluidal in the blink of an eye, then cooled to become transformed into a glassy type of material, are the proverbial motherlode for impactite specimens. Due to the fact that this surviving material was closest of all to the ground zero target rock, it is in the most drastically altered state. Any material closer to the impact than the meltrock was either blown to bits, pulverized, vaporized or, along with a portion of the impacting object, possibly transformed directly to plasma or a plasmic state. Meltrock is also found as a constituent of black onaping, where it is contained as glassy inclusions measuring less than one inch in diameter." read more : www.meteoritelabels.com/Astrobleme.htmlThey can not find the end of the nickel, they presently are at 8000 feet down in the ground. In 1995 they were averaging a million pounds of copper and a million pounds of nickel-per day. |
|
Nov 15, 2024 17:44:51 GMT -5
Nov 15, 2024 17:44:51 GMT -5
