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Expertise, PLEASE!

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29 replies to this topic

#1 ChadAlanRowe

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Posted 04 December 2020 - 06:21 AM

I cannot figure out what this is. It has a density of 4.4 and is not magnetic. It definitely looks as if it was melting on a trip down through the atmosphere.

#2 Sincos

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Posted 04 December 2020 - 07:38 AM

Does it look like this or does it look like that. Explore the more reply options button so you can post a picture that might elicit an expertise response.


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#3 iwannabswiss

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Posted 04 December 2020 - 07:40 AM

Does it look like this or does it look like that. Explore the more reply options button so you can post a picture that might elicit an expertise response.

I think it looks like this:     

 

wink.gif


Edited by iwannabswiss, 04 December 2020 - 07:40 AM.


#4 starbob1

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Posted 04 December 2020 - 07:55 AM

Could be a Big Mac



#5 mdowns

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Posted 04 December 2020 - 08:12 AM

Hi Chad,

 Welcome to cloudy nights.As the others have suggested above, a picture is almost essential.When you post, hit the 'more reply option'then choose your file(pic) and attach to your reply.The pic has to be smaller than 500 kbs. Hope this helps.   Michael



#6 ChadAlanRowe

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Posted 06 December 2020 - 03:04 AM

Sorry. New here. Had to resize pics. Thanks for help. Has a 4.4 density. Very heavy. About 2 inches long, about an inch high, about an inch wide. The curved underside is from a definite fall through atmosphere.

 

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#7 ChadAlanRowe

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Posted 06 December 2020 - 03:06 AM

More pics. Better of underside.

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#8 lee14

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Posted 06 December 2020 - 09:20 AM

A 'curved underside' is not at all necessarily indicative of a 'definite fall through atmosphere'. Concavities are present on far too many ordinary rocks to be considered diagnostic of a meteorite. Evidence of heating during atmospheric flight would be a fusion crust and/or flow lines indicating orientation. I see no evidence of either, though the images are simply too dark to see much detail. The density is similarly unrevealing, it's typical for the average terrestrial rock. It does rule out the possibility of an iron meteorite, but little else. 'Not magnetic' isn't much help either. Almost all meteorites contain some iron, and will deflect a magnet suspended from a string. Simply not 'sticking' to a magnet means very little.

Lee


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#9 ChadAlanRowe

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Posted 06 December 2020 - 02:10 PM

Here's some more, guys. Better ones. Thanks for the patience and understanding. I was having an issue with the photos. I think I finally got it. I appreciate every single person who takes their time to contribute to this thread. Thanks so much. - Chad

#10 ChadAlanRowe

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Posted 06 December 2020 - 02:15 PM

Here y'all go.

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#11 ChadAlanRowe

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Posted 06 December 2020 - 02:17 PM

More.

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#12 ChadAlanRowe

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Posted 06 December 2020 - 02:20 PM

(Cont.)

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#13 ChadAlanRowe

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Posted 06 December 2020 - 02:23 PM

Even more.

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#14 ChadAlanRowe

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Posted 06 December 2020 - 02:26 PM

(Cont.)

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#15 ChadAlanRowe

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Posted 06 December 2020 - 02:28 PM

I forget if I mentioned all the gold in it. 



#16 lee14

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Posted 06 December 2020 - 02:35 PM

Much better pics. Undoubtedly an earth rock.

 

Lee



#17 ChadAlanRowe

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Posted 06 December 2020 - 03:39 PM

Much better pics. Undoubtedly an earth rock.

 

Lee

I gotta disagree, Lee. What do you think it is, then? This thing is SUPER Heavy and made of some kind of metal and gold. I'm not a complete dummy. I know for a fact this rock burned up flying through the atmosphere.  You can feel the weight distribution. I can tell which way this thing fell down. You can see the bunch up of materials on the side from the flow upward of melt from the spot underneath. That doesn't require a rocket scientist's opinion. I can clearly see it for myself. Theres no way you can be that dismissive of it. I'm not saying you're wrong, either. Just looking for something constructive. Thanks for any help and time. We'll figure it out, one way or another.



#18 lee14

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Posted 06 December 2020 - 04:14 PM

What do I think it is? It's a terrestrial rock, a mixture of different minerals. You know for a fact that it burned up flying through the atmosphere? Please enlighten us as to the evidence supporting this assumption. For that matter, how were you able to determine gold content and not the far more likely presence of iron pyrite? Additionally, the presence of macroscopic gold would rule out meteoritic origin. Chemical or XRF qualitative analysis? Any actual chemical or physical evidence supporting a non-terrestrial origin? Any? I dismiss it is as a meteorite because it contains none of the features of one.

 

Lee


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#19 ChadAlanRowe

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Posted 06 December 2020 - 04:52 PM

Lee, I can't take your word for this. You just stated that if it has gold in it, then it can't be a meteorite. That is false, sir. You shouldn't parade misinformation around as truth. I dont wanna argue back and forth with you. I'm not here for that. I hope you're having a wonderful time where you are.

#20 ChadAlanRowe

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Posted 06 December 2020 - 04:53 PM

What do I think it is? It's a terrestrial rock, a mixture of different minerals. You know for a fact that it burned up flying through the atmosphere? Please enlighten us as to the evidence supporting this assumption. For that matter, how were you able to determine gold content and not the far more likely presence of iron pyrite? Additionally, the presence of macroscopic gold would rule out meteoritic origin. Chemical or XRF qualitative analysis? Any actual chemical or physical evidence supporting a non-terrestrial origin? Any? I dismiss it is as a meteorite because it contains none of the features of one.

Lee



#21 lee14

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Posted 06 December 2020 - 05:00 PM

Lee, I can't take your word for this. You just stated that if it has gold in it, then it can't be a meteorite. That is false, sir. You shouldn't parade misinformation around as truth. I dont wanna argue back and forth with you. I'm not here for that. I hope you're having a wonderful time where you are.

You came here looking for 'expertise'. When confronted with a request to provide actual evidence for your determination of meteoritic origin, you became defensive and unresponsive to any of the factual points that were raised. You might gain some insight and realize that your assessment is entirely emotionally based and unsupported by physical evidence. Not to worry, we've seen this pattern before in those who post images of rocks, thoroughly convinced they are meteorites.

 

Lee



#22 lee14

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Posted 06 December 2020 - 05:05 PM

Lee, I can't take your word for this. You just stated that if it has gold in it, then it can't be a meteorite. That is false, sir. You shouldn't parade misinformation around as truth. I dont wanna argue back and forth with you. I'm not here for that. I hope you're having a wonderful time where you are.

Gold appears at a maximum of 8 ppm in meteorites, if any is present at all. This is not something that would be apparent visually, it is only evident with XRF technology or other qualitative analysis. 

 

Lee



#23 mdowns

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Posted 06 December 2020 - 06:17 PM

Guys,

 I cant chime in with any expertise in meteorites,I have none.However,I know very well how to keep discussions on task and polite to all involved.Remember,keep everything civil and on point to the forum.I do not believe the piece in question to be a meteorite but I don't know for certain,that's why we have many here who can add their expertise to the conversation.The OP may choose to disagree with one or all opinions.That's his prerogative but the fact remains this is a forum about space rocks,not odd terrestrials.I hope some other experts here can add to this question and ultimate answer.To all involved I say give it some time and keep sharing your knowledge and expertise.Above all,keep it respectful.


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#24 Meteorite finder

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Posted 06 December 2020 - 10:25 PM

The first question is where did you find this specimen? Is it from a known meteorite strewn field, or from an area of a witnessed fall?  
It appears to be a terrestrial rock of volcanic origin. It is not gold but iron pyrite.  The specimen also has either quartz or chalcedony inclusions (white areas) which are not found in meteorites. 
 

Dave


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#25 ChadAlanRowe

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Posted 07 December 2020 - 01:02 AM

The first question is where did you find this specimen? Is it from a known meteorite strewn field, or from an area of a witnessed fall?
It appears to be a terrestrial rock of volcanic origin. It is not gold but iron pyrite. The specimen also has either quartz or chalcedony inclusions (white areas) which are not found in meteorites.

Dave


Thanks, Dave. I gotta disagree with you. First of all, theres no way you can know that its pyrite and not gold. Secondly, there isn't a single white areas of inclusion on it anywhere. Not saying you're wrong. Just nothing definitive. Thanks, again.


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