Browse

Genesis of the Uralian oxide-silicate supergene nickel deposits remains disputable. There are supergene and polygenic hypogenous model of their origin. The second model usually involves supergene and hydrothermal-hypogenous stages of formation. To solve this problem isotope ratio 87Sr / 86Sr was determined for the first time for the Ufalei and Sakhara supergene nickel deposits. The obtained data on the 87Sr / 86Sr isotopic ratio in samples from ore zones are divided into two groups, which indicate two sources of s...