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Help to ID this 'rock'?
  
  Index -> FOR BEGINNERS: What is it? Where is it from?
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Declan




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PostPosted: Jul 30, 2017 16:17    Post subject: Help to ID this 'rock'?  

I honestly have no idea about mineralogy or anything I just found this 'rock' and I'm pretty interested to find out what it is. I've done a little looking around and I can't really see anything that looks similar. Only thing that looked similar was some type of metallic meteorite but i don't want to jump the gun and claim it's something when I clearly don't know what I'm talking about. Any help please folks?


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Declan




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PostPosted: Jul 30, 2017 16:19    Post subject: Re: Help to ID this 'rock'?  

Another photo.


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Declan




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PostPosted: Jul 30, 2017 16:20    Post subject: Re: Help to ID this 'rock'?  

And one more.
Edit: I also forgot to mention it's pretty dense and way heavier then any rock I've picked up outside that's roughly the same size.



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prcantos
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PostPosted: Jul 31, 2017 11:43    Post subject: Re: Help to ID this 'rock'?  

Hi, Declan, welcome to FMF.

Please read Asking: "What is this? / Where is it from?" to provide some information for the identification.

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James
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PostPosted: Jul 31, 2017 11:50    Post subject: Re: Help to ID this 'rock'?  

So, start with the basics:

Where did you find it?

Hardness?

Streak?

Density (bit harder)?

James
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Declan




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PostPosted: Jul 31, 2017 12:09    Post subject: Re: Help to ID this 'rock'?  

I found it at work in a construction site roughly around 3 metres underground in an old field in Scotland. I don't know wether it was down there when the hole was dug or if it was on the surface and fell down while digging.

It is really hard actually, I scratched it with a copper nail and it barely made a mark.

I don't know what you mean by streak could you please elaborate?

It is very dense. Heavier than any rock I picked up lying around that was around the same size I used to judge in comparison.
Thanks very much for your help gentlemen.
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James
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PostPosted: Jul 31, 2017 12:23    Post subject: Re: Help to ID this 'rock'?  

Declan, we need you to read Asking: "What is this? / Where is it from?" and follow the instructions on it. Where is Scotland did you find it?
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vic rzonca




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PostPosted: Jul 31, 2017 13:59    Post subject: Re: Help to ID this 'rock'?  

Declan, to eliminate the possibility of a nickle-iron meteorite, you might try testing it with a magnet.
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Bob Harman




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PostPosted: Jul 31, 2017 14:21    Post subject: Re: Help to ID this 'rock'?  

VIC,
Don't give Declan false hopes that he may have found a meteorite. The chances of finding one are less than remote.
In a small study that I did and posted on another website, there have been 13 verified meteorites found in the state of Indiana and known to the Indiana Geological Survey (IGS) in 132 years.....from 1859 thru 1991. That is about 1 every 10 years. You can see the map and statistics of Indiana meteorites by googling "Indiana meteorites" online. Put another way, there are about 10 - 15 people struck by lightning in Indiana every year so your chances of being struck by lightning while hunting meteorites is greater than finding a meteorite.

The IGS estimates that of the hundreds or thousands of "meteorites" said to be in private hands, probably all or virtually all are either not meteorites or have been incorrectly identified as such, actually representing look-a-likes such as slag, heavy "iron stained rocks", etc. BOB
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vic rzonca




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PostPosted: Jul 31, 2017 15:01    Post subject: Re: Help to ID this 'rock'?  

I felt I was helping dash Declans hopes of finding a meteorite, as your study shows, Bob. And identifying the odd pebble by photo alone, is equally remote. More testing must be done. Good luck Declan. I think the use of a magnet would be a kind of go/no go test for extraterrestrial debris. There are few other minerals that are highly magnetic, magnetite comes to mind.
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Pete Richards
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PostPosted: Jul 31, 2017 15:24    Post subject: Re: Help to ID this 'rock'?  

vic rzonca wrote:
.... I think the use of a magnet would be a kind of go/no go test for extraterrestrial debris. There are few other minerals that are highly magnetic, magnetite comes to mind.


Interestingly enough, I took my grandson to a local river park to play in the water on Saturday, and picked up a couple of brown rocks that were a different color than most of the shale, siltstone, etc pebbles on the shore. They were rather irregular on the surface, unlike most pebbles which were rounded, and seemed a bit on the heavy side. I took them home and found them mildly susceptible to magnetism - not like a typical iron meteorite, but unquestionable. I cut them in half with my diamond saw, and found a uniform fine-grained brownish matrix with many bubble holes and not a few round blebs of bright, shiny metal.

SLAG. Perhaps not the usual stuff, but definitely slag, and definitely magnetic....

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vic rzonca




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PostPosted: Jul 31, 2017 15:42    Post subject: Re: Help to ID this 'rock'?  

SLAG. Perhaps not the usual stuff, but definitely slag, and definitely magnetic....[/quote]

We've not heard the "S" word for quite sometime Pete, you broke the streak.
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Declan




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PostPosted: Jul 31, 2017 17:06    Post subject: Re: Help to ID this 'rock'?  

I did the streak test and it looked like a black charcoalish colour, it had tiny reflective flakes almost like glitter come off of it aswell.
I found it in a town called Moodiesburn in North Lanarkshire.
I also tested it with a weak fridge magnet(all I have available ATM unfortunately) and it was slightly magnetic.

Edit: Forgot to mention I really appreciate everyone's help on this subject thank you guys.
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