Gilsonite, in a range of softening points and particle size

Gilsonite Natural Asphalt , Natural Bitumen , Hard Asphalt or Hard Asphaltum is used as a performance-enhancing agent for asphalt mixes. Gilsonite-modified paving mixes achieve higher PG grades and incorporate perfectly into the asphalt blend with no need for high shear milling as is the case with many other modifiers. Gilsonite can partially or totally replace, or complement, the use of SBS polymers in modified asphalts at a fraction of the cost. Gilsonite-modified asphalts have higher stability, reduced deformation, reduced temperature susceptibility and increased resistance to water stripping than non-modified asphalts. Gilsonite is also used to make both solvent-based and emulsion pavement sealers with superior appearance and weathering properties.Iranian Gilsonite is the other brand for the mineral known as natural bitumen which is found in Kermanshah and Gilane Gharb located in Iran and also found in Utah in the United States, but can be obtained from Iran at a fraction of the price than that of the U.S.Gilsonite primarily is used in dark-colored printing inks and paints, oil well drilling mud and cements, asphalt modifiers, foundry sands additives and a wide range of chemical produt