iron meteorite or cannonball??

[rockpassion]

found this super heavy metal sphere and people say it is not a cannonball and i thought iron meteorite because of the strange natural imperfection in the sphere. it ways 3670 grams en measures 9,5 cm. So what is it, cannonball, iron meteorite, mill ball or something else? Love to hear your opinions. P.S. it has been cleaned

 

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[mountainplayer]

I can't imagine that a meteorite would be so round. My vote is in for mill ball. Cool display piece!

 

[rockpassion]

I can't imagine that a meteorite would be so round. My vote is in for mill ball. Cool display piece!

oke, but is it not rediculous haevy for a mill ball. It is almost twice as heavy as a connonball of the same size that i have?

 

[Mud Hut]

I am going to say it is a gate weight.

 

[Red-Coat]

oke, but is it not rediculous haevy for a mill ball. It is almost twice as heavy as a connonball of the same size that i have?

For sure not a meteorite.

A sphere with a diameter of 9.5cm would have a volume of 448.9 cubic centimetres and, if it weighs 3,670g, then it’s specific gravity would be 8.18.

Allowing for minor deviations, that’s not a million miles from the specific gravity of iron/steel at around 7.9

If you have a cannonball of the similar size which weighs only half as much, then that would have to be hollow.

 

[rockpassion]

For sure not a meteorite.

A sphere with a diameter of 9.5cm would have a volume of 448.9 cubic centimetres and, if it weigh 3,670g, then it’s specific gravity would be 8.18.

Allowing for minor deviations, that’s not a million miles from the specific gravity of iron/steel at around 7.9

If you have a cannonball of the similar size which weighs only half as much, then that would have to be hollow.

the other cannonball is also solid, here is a wrightup of annual meteoritical society meeting:
Density: Early density work [3] looked at slices thinner than
5 mm selected to avoid inclusions; their typical densities ranged
between 7.85 and 7.9 g/cm3, with low nickel (<6%) irons as low
as 7.6 g/cm3 and high nickel (>18%) irons at 8.05 g/cm3. As
expected, our much larger samples containing inclusions have
densities at or lower than these values, ranging from 7.47 to 7.96
g/cm3. There is no correlation with literature Ni values, indicating
that this variation is due to the presence of inclusions. Assuming
an iron density of 7.9 g/cm3 and an inclusion density of 5.0 g/cm3
the proportion of inclusions ranges from 0 to 15% by volume, or
0% to 10% by mass. Both sulfides and oxides of iron can have
similar densities (4.9 g/cm3 and up to 5.2 g/cm3 respectively) so
differentiating between the two via density alone is not feasible.

 

[rockpassion]

I am going to say it is a gate weight.

this is a gate weight 12,7 cm wide and 4,3 kilo: https://www.ebay.com/itm/305381904524

 

[Red-Coat]

the other cannonball is also solid, here is a wrightup of annual meteoritical society meeting:
Density: Early density work [3] looked at slices thinner than
5 mm selected to avoid inclusions; their typical densities ranged
between 7.85 and 7.9 g/cm3, with low nickel (<6%) irons as low
as 7.6 g/cm3 and high nickel (>18%) irons at 8.05 g/cm3. As
expected, our much larger samples containing inclusions have
densities at or lower than these values, ranging from 7.47 to 7.96
g/cm3. There is no correlation with literature Ni values, indicating
that this variation is due to the presence of inclusions. Assuming
an iron density of 7.9 g/cm3 and an inclusion density of 5.0 g/cm3
the proportion of inclusions ranges from 0 to 15% by volume, or
0% to 10% by mass. Both sulfides and oxides of iron can have
similar densities (4.9 g/cm3 and up to 5.2 g/cm3 respectively) so
differentiating between the two via density alone is not feasible.

If the other 'cannonball' (assuming that's what it is) is solid but only half the weight of the item you're showing, then it can't be made of iron or any other of the usual materials for ordnance.

The other information you're quoting is totally irrelevant. A meteorite may well have the same specific gravity as man-made iron/steel, but would never have a regular spherical shape like the item you're showing. It's NOT a meteorite.

 

[Mud Hut]

this is a gate weight 12,7 cm wide and 4,3 kilo: https://www.ebay.com/itm/305381904524

Gate weights came in all sorts of shapes and sizes. The one in your link is just one of MANY.

 

[rockpassion]

If the other 'cannonball' (assuming that's what it is) is solid but only half the weight of the item you're showing, then it can't be made of iron or any other of the usual materials for ordnance.

The other information you're quoting is totally irrelevant. A meteorite may well have the same specific gravity as man-made iron/steel, but would never have a regular spherical shape like the item you're showing. It's NOT at meteorite.

ok. just a lovely papaerweight thingy

 

[rockpassion]

Gate weights came in all sorts of shapes and sizes. The one in your link is just one of MANY.

ok i understand.

 

[rockpassion]

If the other 'cannonball' (assuming that's what it is) is solid but only half the weight of the item you're showing, then it can't be made of iron or any other of the usual materials for ordnance.

The other information you're quoting is totally irrelevant. A meteorite may well have the same specific gravity as man-made iron/steel, but would never have a regular spherical shape like the item you're showing. It's NOT a meteorite.

so if i understand correctly, this object is made of solid iron or steel??

 

[Red-Coat]

so if i understand correctly, this object is made of solid iron or steel??

Without further information about its properties, that's what the specific gravity would suggest. Obviously, if iron, it would be strongly attracted to a magnet, but would also be expected to exhibit some rusting (depending on how old it it is and where it has been found or stored). If steel, it would be less prone to rusting, especially if stainless steel. Some steel is attracted to a magnet, and some not; stainless steels are often austenitic and will show no attraction.

 

[Ism]

Could it be a shot put? I dug one at a school once.
In open competitions the men's shot weighs 7.26 kilograms (16 lb), and the women's shot weighs 4 kilograms (8.82 lb). Junior, school, and masters competitions often use different weights of shots, typically below the weights of those used in open competitions; the individual rules for each competition should be consulted in order to determine the correct weights to be used.

 

[TORRERO]

Yeah I'm sure its NOT a meteorite... don't know what it is, but it's cool as shit !!

 

[rockpassion]

Without further information about its properties, that's what the specific gravity would suggest. Obviously, if iron, it would be strongly attracted to a magnet, but would also be expected to exhibit some rusting (depending on how old it it is and where it has been found or stored). If steel, it would be less prone to rusting, especially if stainless steel. Some steel is attracted to a magnet, and some not; stainless steels are often austenitic and will show no attraction.

it atract strongly a magnet so defently metal of some sort, no steel is was found in a forrest in the netherlands. and it is pretty stable qua rusting.

 

[rockpassion]

Could it be a shot put? I dug one at a school once.
In open competitions the men's shot weighs 7.26 kilograms (16 lb), and the women's shot weighs 4 kilograms (8.82 lb). Junior, school, and masters competitions often use different weights of shots, typically below the weights of those used in open competitions; the individual rules for each competition should be consulted in order to determine the correct weights to be used.

is it not so that a shot put most be perfect round for better erodynamic. Mine is wonky as hell.

 

[metaldetectorco]

It is unlikely to be a meteorite, but a good way to check is the type of streak it leaves if you rub on something ceramic or test it for nickel. The majority of meteorites contain 5-15% nickel and cannon balls should contain 0.

 

[UnderMiner]

Maybe it's an alien cannon ball that arrived on Earth as meteorite after being fired by an alien pirate who had buried treasure on Earth while fleeing the intergalactic federation of planets police.

 

[rockpassion]

It is unlikely to be a meteorite, but a good way to check is the type of streak it leaves if you rub on something ceramic or test it for nickel. The majority of meteorites contain 5-15% nickel and cannon balls should contain 0.

xrf test will do fine but sadly have no opurtunity to do that.