Galena | GRHardnessTester.comGalena is easily recognizable by its silver and metallic look.  A person can also notice galena by its square shape because of its perfect cleavage which allows it to break apart into cubes.  Galena (PbS) is a lead sulfide mineral that is found in many countries around the world.  People might know it as the primary ore of lead.  It has a high specific gravity of 7.4 to 7.6.  According to Mohs hardness scale, Galena is a soft mineral with a hardness number of about 2.5.

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