Alright then we will go over the basics. Give me a summary of what you know regarding chakra and the iron sand nature itself. Feel free to read sources but no copy/pasting please, I will know if you do.
Chakra is the metaphysical product of the Yin and Yang halves to a person's power combining, to use as few words as possible. It is the fuel for the techniques in the manga as well as a necessity for basic life, as seen by the characters facing death if their chakra reached a critical level. Chakra can be split into numerous elemental natures, as well as raw chakra (lacking a nature). Chakra has a tendency to enhance the effects of whatever they are influencing, fueling intensity at times.
Iron sand is the result of intense study of the third Kazekage. He watched the Jinchuriki of the one tail to study their ability to harness the grains of sand for their jutsu, and changed the premise of the overall strategy to fit his own magnetism abilities, using iron grains in place of sand. This marked the creation of the style, which has been expanded upon by Gold Dust with the 4th and 5th Kazekage. It is very versitile and can be devastating when it is needed to be, due to its heavy yet maleable properties. It combines Earth and WInd natures to form the KG.