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I believe a Iridium meteorite, Please help


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The pictures aren't the best but it looks like you have a piece of slag and not an iridium meteorite.

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11 minutes ago, Scott Dibbles said:

Slag does not cut class, Does it?

It is silver in color, when chipped off. only has heat discolored on part of it, about half.

Almost all slag contains silicone dioxide which essentially is glass. So yes it should scratch glass depending on the composition.

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25 minutes ago, Scott Dibbles said:

I cannot pickup glass with my metal detector but I pick up this rock thing. I would like to know more ways to prove or disprove this thing. Also I think it is heavy for it's size.

 

Because it  contains other elements that could cause the detector to sound off.

 

I can tell you that you don't have a meteorite. It's slag.

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32 minutes ago, chrisski said:

Why do you think it’s iridium?

Why do you think it’s a meteor?

1. The hardness, kniife does not scratch, color and is picked up with metal detector and not magnetic. And cuts glass.

2. The heat discolored blue then green then gold then copper then grayish, like it has been heated from 1 side.

002.JPG

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Slag is  just a byproduct of a metallic smelting operation and there's tons and tons laying around from years past. It's not something to be classified by type that I know of. 

Metallic smelting was done in practically every single state at one time  or another and the byproduct in the form of slag was left onsite for the most part. That's what you found.

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18 minutes ago, Scott Dibbles said:

1. The hardness, kniife does not scratch, color and is picked up with metal detector and not magnetic. And cuts glass.

2. The heat discolored blue then green then gold then copper then grayish, like it has been heated from 1 side.

002.JPG

Are any of these properties of iridium?

I think it would be worth it to bring this to a pawn shop and have them put this mystery to rest by placing it under an XRF machine they use to determine jewelry.  Will tell you the metal content and percentages.

Smelting was done in some of the oddest places and even when it appears that no one has ever been there before. If the sample has a flat side, it is slag where the molten metal hit a surface and then dried.  Not having a flat side by no means does not mean it is not slag.  I think the glass in there may have been part of a smelting process to remove imputrities.

Not claiming to be a meteor expert, but is there any evidence of a fusion crust on the sample?

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35 minutes ago, chrisski said:

Are any of these properties of iridium?

I think it would be worth it to bring this to a pawn shop and have them put this mystery to rest by placing it under an XRF machine they use to determine jewelry.  Will tell you the metal content and percentages.

Smelting was done in some of the oddest places and even when it appears that no one has ever been there before. If the sample has a flat side, it is slag where the molten metal hit a surface and then dried.  Not having a flat side by no means does not mean it is not slag.  I think the glass in there may have been part of a smelting process to remove imputrities.

Not claiming to be a meteor expert, but is there any evidence of a fusion crust on the sample?

Muriatic acid does nothing to it

 

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46 minutes ago, Scott Dibbles said:

Muriatic acid does nothing to it

 

I truly don’t know how to test for iridium short of going to an XRF.  Are these tests you speak of recognized ways to test for iridium?  Many things will not dissolve in Muraic acid.

I did not find anything useful in testing for iridium on google.

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1 minute ago, chrisski said:

I truly don’t know how to test for iridium short of going to an XRF.  Are these tests you speak of recognized ways to test for iridium?  Many things will not dissolve in Muraic acid.

I did not find anything useful in testing for iridium on google.

It most likely doesn't contain any iridium but even if it did, it would probably be in parts per billion and wouldn't show up on a XRF gun anyway.

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6 minutes ago, Morlock said:

It most likely doesn't contain any iridium but even if it did, it would probably be in parts per billion and wouldn't show up on a XRF gun anyway.

I am working on taking it to a Jeweler to have that small piece tested.

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Welcome to the forum Scott,

Unfortunately, your rock is a common Earth rock or slag that contains iron. 

Take a look at your rock(s). If it glistens like a crystal structure (ie: quartz) at any point in the rock, it can’t be a meteorite. If it has layers, it can’t be a meteorite. It’s sedimentary. If it has small gas bubbles (vesticles) in it. It is not a meteorite, but basaltic or sedimentary. If it is moderately magnetic it is NOT a meteorite. If there is a thick crust on it, it can’t be a meteorite. If it has very rough surfaces or is angular, except for breakage, it is not a meteorite. If it is heavy, but not much heavier than other similar sized rocks, it isn't a meteorite. File off a corner or cut it. It won’t diminish its value. If there is all bright silvery metal it isn’t a meteorite. If it is all grey metal it can’t be a meteorite. If there is black crust as thin as a fingernail, and crazing on the outside of the rock, it might be a meteorite. If there are small silver specks visible in the filed off section, it might be a meteorite.

A simple test for your rock is to take the top off a toilet tank and make a hard streak with it on the unpolished porcelain underside.  If the streak is dark red or gray it is magnetite or hematite and is not a meteorite.

There are billions of magnetic rocks in the US, none of which are meteorites. Anyone can find magnetic earth stones nearly everywhere. Approximately 4% of all terrestrial rocks found in all of the 50 states are moderately magnetic. Just take a strong magnet and drop it into sand and you will see what I mean. Check our O Richard Norton’s, “Rocks from Space” or visit the ASU Meteorite Center.

Keep looking down. They’re out there.

billpeters

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