Fusion crust?

[rockpassion]

I have found a big fragment of a rock with a very interesting composition. It has spherules and divers type of green inculsions. What is striking about this rock, is that on one side it has a beige crust and it is really part of the rock and even has contraction cracks and melted brown stuff. Love to hear your opinions and if someone has seen this before.

 

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[rockpassion]

here are photo's of the spherial inclusions and the crystal within them.

 

[rockpassion]

i will take that as a no then.

 

[rockpassion]

UPDATE from this find. I have decided to cut this one because i thought it was worth it. And have not cut a rock for 3 years now. The total mass of the stone before cutting was 16 kilo and after 14,9 kilo combined pieces. It looks like black beauty somewhat, and has inclusions which have a martian look to them. included shockvein see red arrow and melt / makelynite inclusion see red circle. Judge for yourself and give an opinion.

 

[Terry Soloman]

I have found a big fragment of a rock with a very interesting composition. It has spherules and divers type of green inculsions. What is striking about this rock, is that on one side it has a beige crust and it is really part of the rock and even has contraction cracks and melted brown stuff. Love to hear your opinions and if someone has seen this before.

I have pretty much stopped looking at all "metetoright or meteowrong" posts because 99.999-percent of them are terrestrial stones. Since you asked me to take a look I did. I want to make it clear that no one can tell you from a photograph what you have found - they can make highly educated guesses or assumptions. My guess is terrestrial. Here are two pieces of the Gold Basin, AZ, meteorite (Chondrite) that display fusion crust. I have a better example that I'll try and find. - Terry

 

[rockpassion]

I have pretty much stopped looking at all "metetoright or meteowrong" posts because 99.999-percent of them are terrestrial stones. Since you asked me to take a look I did. I want to make it clear that no one can tell you from a photograph what you have found - they can make highly educated guesses or assumptions. My guess is terrestrial. Here are two pieces of the Gold Basin, AZ, meteorite (Chondrite) that display fusion crust. I have a better example that I'll try and find. - TerryView attachment 2196975View attachment 2196976

thank you for your time and response. And my stone would be a achondrite type, if it was a meteorite. Have you take a good look at the last photo's of the green inclusion with a melt rim around it. The whole rock is a melt breccia earth or not earth i don't know. but the inclusion has melt veins or shockveins. I do have one stone that looks like your and i wondered if it is a chondrite because it has alot of round inclusions in it. will try to photgraph it tommorow.

 

[WoodsDigger]

this is my possible chondrite

Send your pics to the Royal Ontario Museum. I sent mine and they were impressed enough to ask for the rock for analysis. I mailed it amd they hit it w a spectrometer or something. It was limestone with quartz in it fried by a campfire no meteorite.

 

[rockpassion]

Send your pics to the Royal Ontario Museum. I sent mine and they were impressed enough to ask for the rock for analysis. I mailed it amd they hit it w a spectrometer or something. It was limestone with quartz in it fried by a campfire no meteorite.

thank for the tip, but i have send first the photo's of the big one and they have received it and are processing it now

 

[WoodsDigger]

thank for the tip, but i have send first the photo's of the big one and they have received it and are processing it now

Good luck !

 

[rockpassion]

I have cleaned some of the fragments of the big rock that i broke off and it turnes out to have fusion crust which is an exact match to a howardite from a trustworthy meteorite seller see photo. So my big rock could be a achondrite mars or other.

 

[Red-Coat]

“Inclusions which have a martian look to them”? “Makelynite inclusion”? (you mean “maskelynite”). And you can tell this just by looking?

Instead of all this fanciful speculation about the possibility of rare classes of meteorite and reliance only on photographs, why don’t you simply send a sample to an expert laboratory with the appropriate credentials to verify meteorites? With all due respect to the Royal Ontario Museum, there’s only so much that can be said by looking at photographs and, with the exception of specimens having very obvious characteristic features, there ain’t nobody who can verify a meteorite from photographs alone.

I have posted this information a number of times, but New England Meteoritical Services will provide a meteorite verification (or otherwise) at a subsidised price of $30 as part of an educational outreach programme:

http://meteoritetesting.org/Submitting a sample.htm

The fee includes return postage in the USA for the specimen. They accept submissions from outside the US, but you will need to contact them first to agree the additional cost for return postage. They only require a 10-20g sample, which you could cut off with a quality hacksaw (it won’t detract from the value) or by breakage. If you don’t want to cut or break, you will need to contact them first to agree additional return postage costs for a larger specimen. Note that although they will be able to tell you if it is meteoritic (and what class it falls into), they can’t necessarily give a definitive ID for non-meteoritic specimens but they will offer an opinion.

If you have what turns out to be a large achondrite, it’s value will far outweigh any testing costs. If not (my belief) you’ve only flushed $30+ down the pan.

 

[rockpassion]

“Inclusions which have a martian look to them”? “Makelynite inclusion”? (you mean “maskelynite”). And you can tell this just by looking?

Instead of all this fanciful speculation about the possibility of rare classes of meteorite and reliance only on photographs, why don’t you simply send a sample to an expert laboratory with the appropriate credentials to verify meteorites? With all due respect to the Royal Ontario Museum, there’s only so much that can be said by looking at photographs and, with the exception of specimens having very obvious characteristic features, there ain’t nobody who can verify a meteorite from photographs alone.

I have posted this information a number of times, but New England Meteoritical Services will provide a meteorite verification (or otherwise) at a subsidised price of $30 as part of an educational outreach programme:

http://meteoritetesting.org/Submitting a sample.htm

The fee includes return postage in the USA for the specimen. They accept submissions from outside the US, but you will need to contact them first to agree the additional cost for return postage. They only require a 10-20g sample, which you could cut off with a quality hacksaw (it won’t detract from the value) or by breakage. If you don’t want to cut or break, you will need to contact them first to agree additional return postage costs for a larger specimen. Note that although they will be able to tell you if it is meteoritic (and what class it falls into), they can’t necessarily give a definitive ID for non-meteoritic specimens but they will offer an opinion.

If you have what turns out to be a large achondrite, it’s value will far outweigh any testing costs. If not (my belief) you’ve only flushed $30+ down the pan.

thanks for the heads up, i have contacted them and will send a 20 gram sample. But with my luck it will be just an earth rock.

 

[WoodsDigger]

“Inclusions which have a martian look to them”? “Makelynite inclusion”? (you mean “maskelynite”). And you can tell this just by looking?

Instead of all this fanciful speculation about the possibility of rare classes of meteorite and reliance only on photographs, why don’t you simply send a sample to an expert laboratory with the appropriate credentials to verify meteorites? With all due respect to the Royal Ontario Museum, there’s only so much that can be said by looking at photographs and, with the exception of specimens having very obvious characteristic features, there ain’t nobody who can verify a meteorite from photographs alone.

I have posted this information a number of times, but New England Meteoritical Services will provide a meteorite verification (or otherwise) at a subsidised price of $30 as part of an educational outreach programme:

http://meteoritetesting.org/Submitting a sample.htm

The fee includes return postage in the USA for the specimen. They accept submissions from outside the US, but you will need to contact them first to agree the additional cost for return postage. They only require a 10-20g sample, which you could cut off with a quality hacksaw (it won’t detract from the value) or by breakage. If you don’t want to cut or break, you will need to contact them first to agree additional return postage costs for a larger specimen. Note that although they will be able to tell you if it is meteoritic (and what class it falls into), they can’t necessarily give a definitive ID for non-meteoritic specimens but they will offer an opinion.

If you have what turns out to be a large achondrite, it’s value will far outweigh any testing costs. If not (my belief) you’ve only flushed $30+ down the pan.

The ROM will ask for it based on the Pic. Lady said she looks at 100s a month amd rejects all of them mainly.

 

[Red-Coat]

The ROM will ask for it based on the Pic. Lady said she looks at 100s a month amd rejects all of them mainly.

It's often easier to say a specimen is not a meteorite, based on what can be seen in pictures. A lot more difficult to judge that it is, for most specimens.

 

[rockpassion]

The ROM will ask for it based on the Pic. Lady said she looks at 100s a month amd rejects all of them mainly.

I was already sure that they would reject my proposal. And it is said the a posible very important discovery wil go unnoticed just because the experts judge it as impossible. But think of all the weird achondrites they have discovered from which most scientist said the where not metorites. I am just saying nothing is impossible.

 

[rockpassion]

It's often easier to say a specimen is not a meteorite, based on what can be seen in pictures. A lot more difficult to judge that it is, for most specimens.

that's true. well it will be laying in my cubbart ontil i die and maybe it will be rediscovered.

 

[rockpassion]

by the way i have noticed that all the xenolith or lherzolites do not have a melted rim around them like mine has. food for thought.

 

[rockpassion]

i have send a fragment of to get a general mineral composistion of the green inclusions and the white spherules watch this space. Here some new photo's

 

[rockpassion]

Please can anyone give me a clue what this stone can be or has someone found a similair stone? In the whole area where i found the stone this was they onlly one of its type. Would love to hear from a geologist what his opnion is. important to first rule out an earth rock candidate.

 

[rockpassion]

Well sadly this rock will remein a mystery because the costs for doing a test accurte was going to be 420 euro incl. tax. so i declined. Well is still is the best rock i have found in 40 years of rockhounding and looking for that one elusive meteorite.