A bureau of Economic Geology, Department of Mines. Scale of Feet Zi ' Y WY f fi SSS Figure 4. Cariboo Gold Quartz mine; vertical section along line A-B, Figure 3, showing positio se 7 AN Rainbow member: Rainbow member: Rainbow member: ___Rainbow member: Baker member: fissile quartzite fissile argillite and quartzite fissile quartzite fissile argillite and quartzite fissile quartzite ns of principal mineral deposits by heavy. black lines, and extent of underground workings at various levels.