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Meteorit or not?


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Hi and thank for accept me in this forum๐Ÿ™๐Ÿ™๐Ÿ™๐Ÿ˜Š

I live in France and i d like to identify one of theย  rocks i ve found.

Weight 72,7

Size 4cm on 3cm

Density 6,92

It's magnetic and heavy.

I adf some pictures.

Thanks in advance

๐Ÿ™๐Ÿ™๐Ÿ™๐Ÿ˜Š

ย 

IMG_20210424_134241_1.jpg

IMG_20210424_134232.jpg

IMG_20210424_134222_1.jpg

IMG_20210424_134204_1.jpg

IMG_20210424_134137.jpg

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That isn't a cut. It is a break. Steel does not break like that.

It's not a meteorite because the surface I'm looking at is not iron. Yet you say it is magnetic. That is quite the conundrum.

It is either some funky looking magnetite or an art project. But it isn't a meteorite.

:rolleyes:

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Have you done a streak test in it? All this does it tell you the color of the powder.

https://geology.com/minerals/streak-test.shtml

If you don't have a porcelain plate, you can grind a piece into a fine powder then smear it on a piece of white paper.ย 

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Bingo!

Now we know why it has that black crust. That is manganese. Around a lump of iron saturated with manganese.

That was an excellent job of identification Mike. I think you nailed it!

It really looks mineral with the crystal structure like that but itย couldn't be a sulfide and be magnetic. And it really doesn't look like refractory waste. So I was completely stumped on what it was while being certain of what it was not.ย 

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4 hours ago, goldplay said:

This is the density of the 3 rocks i have.

Manganese can have a density of 7,6?

IMG_20210426_194517.jpg

It's not manganese. It is an iron and manganese silicide. So the specific gravity will be greater than the same volume of manganese. At least so it seems.

Manganese is about 7.4 and iron is 7.6 or so. Im not sure specific gravityย makes much difference in your quest to know exactly what it is. It is clearly not meteoritic iron. It is some type of cultured mineral created in an arc furnace.

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