Components Natural bitumen Gilsonite TLA Saturates, wt. % 1.6 4.1 Aromatics, wt. % 0 22.9 Resins, wt. % 18.7 37.4 Asphaltenes, wt. % 79.7 35.6 Colloidal instability index, CII 4.34 0.65 Stability Very unstable Stable

Table 3: Stability of natural bitumens.