Oil sands, also known as bituminous and tar sands, are a mixture of mostly clay, sand, water, and bitumen. While they are found in many parts of the world, large quantities of oil sands are particularly found in Canada and Venezuela. In warmer weather, they appear to be very sticky and thick, contrary to the frozen solid form they are in colder weather. While the substance looks similar to tar, it is actually bitumen – a mixture of hydrocarbons known as crude oil. Bitumen is essentially a form of petroleum, and two trillion barrels of the sticky mixture lies in oil sands.
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