What mineral can scratch galena and be scratched by dolomite?

The mineral that can scratch galena and can be scratched by dolomite is sphalerite. Sphalerite has a hardness of about 3.5 to 4 on the Mohs scale, which allows it to scratch galena (hardness 2.5 to 3) but can be scratched by dolomite, which has a hardness of 3.5 to 4.