Iran Gilsonite Lump Gilsonite lump with ash percentage between 0 and 25 Gilsonite, or Natural Asphalt , Natural Bitumen is a natural, resinous hydrocarbon This natural asphalt is similar to a hard petroleum asphalt and is often called a natural asphalt, asphaltite, uintaite, or asphaltum. Natural asphalt is derived from the natural mutation of petroleum. […]
