Electrical Properties of Rocks and Minerals286 Electrical properties of rocks and minerals where + is the fractional pore volume porosity S is the fraction of the pores containing water pw is the resistivity of water n = 2 and a rn are con- stants 0 5 I a I 2 5 1 3 I rn I 2 5 For example -thermal conductivity of bauxite-,Aluminium ore crusher priceAluminium is a good thermal and electrical conductor having 59% the conductivity of copper both thermal and electrical while having only 30% of copper s density Aluminium is capable of superconductivity with a superconducting critical temperature of 1 2 kelvin and a critical magnetic field of about 100 gauss 10 milliteslas …… Get More

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