Note that 1E8 tons is a small asteroid (roughly 400 meters diameter if spherical), the attractive force of such a spoonfull is still very small.

There is no known substance in the universe which would not be squshed on the surface of a NS. And by squshed, I mean fusion-burned to iron…

@Eric Near Buffalo and his idea: Actually, it would tunnel right though to the Earth's core and almost up to the other side again before swinging back. 100 million tons placed on a surface of a few square inches?? That creates a pressure which penetrates anything! Even bedrock, mantle rock etc. But…

…this leads us to a comment for dbdncr:

Neutronium has both an upper and a lower mass limit.
Concerning the upper mass limit and one question from LLDIAZ: There's a mass named the Tolman-Oppenheimer-Volkov mass which is the neutron star version of the Chandrasekhar mass in white dwarfs. Exceed this mass, for example via additional accretion from a binary donor star, and the neutron star collapses to a black hole (accretion induced collapse). If the neutron star is spinning very rapidly (millisecond magnetar), this may launch a short Gamm-Ray Burst. So, neutron star –> black hole is possible. The other way around is not (a Black Hole is The End Of All Things, at least on a timescale similar to the age of our universe). The TOV mass is rather unknown and estimated to lie at 2 – 3 solar masses.
Then there's a lower limit, which is even less well known but probably higher than the masses of the smallest stars. Neutronium is extremely unstable and needs extreme gravitational pressure, otherwise it just detonates. So, your teaspoon goes kablooie before it can even drop through the floor. The actual force of the explosion is probably beyond the complete arsenal of Earth's nuclear weapons… Then the neutrons decay into protons and electrons, which basically means beta radiation. Then they slowly combine to hydrogen with burns with oxygen… In the end, you have 800 million tons of water raining on a blasted planet.

@Dark Gnat: No, because neither the neutron core nor such an electron cloud would have quantized energy levels. The atom analogy is not that good, as a neutron star (which does have a density similar to an atomic core) is bound by gravity, whereas atomic cores are bound by the strong force.

@LLDIAZ, second question: The statement "10 – 50 solar masses" is actually quite correct but a bit misleading. (The lower boundary is fuzzy and might start at 8 solar masses.) Typically, stars with 20 solar masses or more will have such a high core mass that they will collapse directly to a black hole.
But there was a magnetar (so-called Anomalous X-ray Pulsar, AXP) discovered in the young, massive cluster Westerlund 1. To have exploded as a supernova, the star must have had ~ 50 – 60 solar masses (this can be determined from the age and mass of the other cluster members) – but here we have a neutron star and not a black hole! The explanation is probably that the star, before it exploded, lost most of its mass to a fierce stellar wind (Wolf-Rayet stage or Luminous Blue Variable eruptions), reducing it so much that the final core mass upon collapse was not enough to make a black hole.

@Sid: Depends on your perspective. Neutron stars are almost perfect spheres, so their gravity fields are close to ideal point-source outer field solutions. These would not distort the magnetic field, as far as I know. But the gravity itself distorts space-time near a NS, allowing you for example to see both poles at once, therefore, the magnetic field lines would also seem distorted for an outside observer.

Good question… and I can't answer it. I can however speculate it may take a star the size of one reported a while back on here. If I recall correctly, there was a story on here about a star that was found semi-recently that possibly had the circumference of Saturn's orbit. If that is correct from memory, that's a bloody big star. Maybe that one would do the trick.

@ LLDIAZ: I'm not crazy, I just think a little differently

@Ricardo: A neutron star is *mostly* neutrons and there's a big difference between all neutrons and mostly neutrons.

Expand into a Rhode Island chunk of nuetrons?

Would it stay nuetrons?

If a neuron star has an electron cloud around it, couldn't it be a giant model of an atom?

Now to matter at hand.
If massive stars collapse into magnetars how big do the stars have to be to collapse into blackholes?
and if a magnetar and a black hole have so much mass are they in some way connected?
can one over time become the other?.

Considering that it's 100 million tons, it would have decimated the table. It should probably have been put on the ground. My bad.

How great would it be to trick some world class weight lifters with that?

"Your first task is to lift that teaspoon with the glowing material."

"Ha…that's a joke. ERGHHHHH! ERGHHHHHHHHHHHHHH!!! What the…? Is this thing glued to the table?"