Figure 7. Chemostratigraphic section at 2500E, Kristineberg mine. View is to the east. The units shown are primary rock types defined using immobile-element ratios (compare with Figure 1). Rhyolite X flanks the A sulfide lens on its north, whereas rhyolite A flanks the B sulfide lens on its south. These two important marker units can be used to make mine-scale correlations. The rocks between the two massive sulfide horizons are mainly rhyolite B, dacite and andesite.