The white rocks with an aluminiferous mineral association (alunite-kaolinite-sericite-pyrite-quartz) have been studied at the Safyanovka massive sulfide deposit in the contact of ore bodies. It’s supposed this mineral association was formed almost simultaneously with ore minerals (in particular, with enargite) under a special high sulfur fugacity and acidic conditions of: - logfS2 = 10-12; -logf02 = 38; T = 180-300 °C and pH up to 4.5.