Did metals on earth, formed on earth? or around our sun? or somewhere else?

S

Shadow1

Valued Senior Member
Did metals on earth, formed on earth? or around our sun? or somewhere else?
like, iron,silver, gold, etc..., cuivre(sorry idk the english word, this is in french)
anyway, did those formed on earth, or outside our solar system? i readed once, that, the heat and the size of our sun, is not ennuf to form those materials, idk much abou that, so can anyone tell me?
 
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what i meant by, "formed on earth", i meant, did they formed with earth during it's formation?
 
As a geologist I usually need to define the word 'metal' when using it to represent elements.

Sometimes a 'metal' is used as all elements other than hydrogen and helium Other definitions of 'metals' are to do with ion release, etc.
 
Shadow1 said:
Did metals on earth, formed on earth? or around our sun? or somewhere else?
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Our sun is a second-generation star. It does not (currently) produce metals - only helium from hydrogen fusion. You're right that our Sun is not (yet) hot enough to produce "heavy" elements.

All the metals such as Iron, Aluminium, Copper, gold etc. that are found on Earth were originally produced in other stars, mostly as a result of supernova explosions of those stars.
 
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James R said:
Our sun is a second-generation star. It does not (currently) produce metals - only helium from hydrogen fusion. You're right that our Sun is not (yet) hot enough to produce "heavy" elements.

All the metals such as Iron, Aluminium, Copper, gold etc. that are found on Earth were originally produced in other stars, mostly as a result of supernova explosions of those stars.
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ah, i see, so, it reached us by the other stars explostions, is there any traces for those events and evidences, or a place for those previous supernovas, or a trace or anything ?
 
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raptorttail said:
As a geologist I usually need to define the word 'metal' when using it to represent elements.

Sometimes a 'metal' is used as all elements other than hydrogen and helium Other definitions of 'metals' are to do with ion release, etc.
Click to expand...

ah, i meant the heavy elemnts, like, aluminium, iron, etc etc...
 
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and, why is the earth's core is from iron? how did it form to be the core, from iron mostly?
 
raptorttail said:
As a geologist I usually need to define the word 'metal' when using it to represent elements.

Sometimes a 'metal' is used as all elements other than hydrogen and helium Other definitions of 'metals' are to do with ion release, etc.
Click to expand...

I find this pretty funny, since hydrogen, when it is solidified is actually a metal.

The best and most obvious way to define a metal is in terms of the bonding of the crystal. As any 16 year old science student knows, metals have a 'sea' of free electrons that hold the lattice of positively charged ions in place.
 
Repo Man said:
Carl Sagan's Cosmos We are made of star stuff.

Shadow1, I cannot recommend the series Cosmos highly enough if your are genuinely interested in this sort of thing.
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I came to recommend the same book and TV series, it helped change my out look on life.

Brilliant book.

Carl Sagan (RIP.)

I would also strongly recommend the Richard Feynman Lectures.

Richard Feynman (RIP.)

And the Cosmic Code by Heinz R. Pagels.

Heinz R. Pagels. (RIP.)

Light in, Light out.

Terry Giblin
 
Shadow1 said:
Cuivre (sorry idk the English word, this is in French) . . . .
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The English word is copper. There are several good online dictionaries, if you don't have a printed version. Here is a convenient one that handles several languages. Also, in English we capitalize the names of nationalities and languages: French, Arabic, Chinese, etc.
Shadow1 said:
and, why is the earth's core is from iron? how did it form to be the core, from iron mostly?
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It's iron and nickel. I'm no cosmologist, but one obvious possibility is that before the planet cooled down, the lighter elements were all in a gaseous state and most of their mass drifted off into space. The temperature of the earth's core is still several thousand degrees. When the entire mass of the planet was that hot, I can imagine most of the lighter elements using that energy to reach escape velocity and flying away.
 
Shadow1 said:
Did metals on earth, formed on earth? or around our sun? or somewhere else?
like, iron,silver, gold, etc..., cuivre(sorry idk the english word, this is in french)
anyway, did those formed on earth, or outside our solar system? i readed once, that, the heat and the size of our sun, is not ennuf to form those materials, idk much abou that, so can anyone tell me?
Click to expand...

Every element found on earth, were made inside stars or in super nova explosions, the process is repeated several times.

Gas cloud forms stars, nuclear reaction, stars explodes, forms new gas cloud....

Gas cloud forms stars, nuclear reaction, stars explodes, forms new gas cloud....

Gas cloud forms stars, nuclear reaction, stars explodes, forms new gas cloud....

Gas Gas cloud forms star and planets and we find the various elements on earth.

General called a galaxy......
 
James R said:
All the metals such as Iron, Aluminium, Copper, gold etc. that are found on Earth were originally produced in other stars, mostly as a result of supernova explosions of those stars.
Click to expand...

I always thought that most of the elements after helium and up to iron were formed in ordinary star processes and most of the elements heavier than iron were formed in supernovae. I thought that the amount of elements produced every second from every star far outweighed whatever was produced by the very sporadic supernovae.
However elements afer iron cannot be created in normal processes and are only produced during supernovae.
 
John Connellan said:
... However elements after iron cannot be created in normal processes and are only produced during supernovae.
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That is not completely true. Some part of the trans iron elements is produced inside of stars by "endothermic cooking"

There is a lot of kinetic energy, KE, in the sub-iron particles inside a hot large* star. Sometimes two will collide and fused to make a trans-iron element. This ever so slightly cools the star as some KE has been converted into the higher than iron binding energy per baryon of the new trans-iron element.

These newly made trans-iron element reach a dynamic equilibrium concentration inside the star - I.e. their rate of formation and destruction become equal. The star has a large volume, so there is a lot of "endothermically cooked" trans-iron elements inside the star. I don't know the total fraction of trans-iron elements which is inside all the stars compared to that which was produced during shock wave collisions. When the super nova star explodes (becomes cooler and much less dense) many of the "endothermically cooked" trans-iron elements inside the star survive as the destructive collision rate falls rapidly.

I do suspect that the huge shock wave collision formation rate is responsible for most of the trans-iron elements now outside of stars, but I would guess that the majority of trans-iron elements of the universe are inside stars. The production process of it and the endothermic cooking are basically the same, but the shock production process is far from any dynamic-equilibrium distribution populations and rate of collisional production greatly exceeds the rate of collisional destruction of the trans-iron elements in the shock wave.

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* Stars large enough to have passed thru many successive stages of fusion so they have many elements not far below iron, the minimum binding energy per baryon, which can collide to form trans-iron elements.

Our sun is too small and too cold to do any significant amount of endothermic cooking trans-iron elements (and lacks any near iron elements, except those it got form earlier stars). I.e. our sun will never make any trans-iron elements as it will die in "slow motion" expansion without shock waves.

Back when the universe was smaller many, if not most, stars had a 100 solar masses (or more?)
 
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prometheus said:
I find this pretty funny, since hydrogen, when it is solidified is actually a metal.

The best and most obvious way to define a metal is in terms of the bonding of the crystal. As any 16 year old science student knows, metals have a 'sea' of free electrons that hold the lattice of positively charged ions in place.
Click to expand...

such good words. do the neutrons being fermionic like electrons serve the same purpose. possible neutrons carry the negative forces of the surrounding electron lattice to hold the protons in the nucleus together.
 
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