Does Mercury have a greater amount of heavy metals than the other known planets in our solar system?
by 
JackofAllTrades
ANSWERS: 1
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Yes, Astronomers have estimated that Mercury is made up of approximately 70% metals and 30% silicate material. In fact, it's only slightly less dense than the Earth, with 5.43 g/cm3. So even though Mercury is one of the smallest planets, it is the second most dense planet in the solar system.
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