Gilsonite -
Wikipedia, the
free
encyclopedia: This unique
mineral is
used in more
than 160
products,
primarily in
dark-colored
printing inks
and paints,
oil well
drilling muds
and cements,
asphalt
modifiers,
foundry sand
additives, and
a wide variety
of chemical
products. The
trademark,
registered in
What is
Gilsonite?: Gilsonite, or
North American
Asphaltum is a
natural,
resinous
hydrocarbon
found in the
Uintah Basin
in
northeastern
Utah.