• Question: what elements are inFeS

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      Asked by Aoife to Aoife, Brian, Conor, Louise, Matthew on 15 Nov 2016.
      • Photo: Louise Mc Grath

        Louise Mc Grath answered on 15 Nov 2016:

        Hi Aoife,

        In FeS there are 2 elements: Iron (Fe) and Sulphur (S).

      • Photo: Matthew Kitching

        Matthew Kitching answered on 15 Nov 2016:

        Hi Aoife,

        Iron(II) sulphide (FeS) contains atoms from two elements: one atom of Iron (Fe) and one atom of sulphur (S).

        Iron sulphide is quite a cool compound – you can find out quite a lot about it from wikipedia:
        https://en.wikipedia.org/wiki/Iron(II)_sulfide

        Whats interesting is that when iron sulphide is found in nature, it forms minerals. The most basic one is troilite (which is pale brown). Whats cool is when it forms minerals, sometimes the minerals are missing some of the iron and it forms minerals like Pyrrhotite and Pyrite. Pyrite is shiny and golden (sometime called fools gold)
        https://en.wikipedia.org/wiki/Pyrite
        https://en.wikipedia.org/wiki/Troilite

        Hope this helps – let me know if you want to know more!

      • Photo: Aoife Lucid

        Aoife Lucid answered on 16 Nov 2016:

        Iron and Sulfur! FeS actually has a really interesting crystal structure called pyrite (if you think that crystal structures are cool!)

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