Gilsonite Metal Content
Gilsonite Metal Content
Element
Manganese <0.0008%
Copper <0.0008%
Zinc <0.0004%
Cobalt 0.004%
Nickel 0.004%
Chromium <0.0008%
Thallium <0.001%
Barium <0.002
Selenium <0.04%
Bismuth <0.008%
Antimony <0.008%
Beryllium <0.0008%
Mercury 0.004 ppm
Lead 0.8 ppm
Cadmium <0.4 ppm
Arsenic <4.0 ppm