GEOLOGICAL QUARTERLY, cilt.54, sa.4, ss.431-437, 2010 (SCI-Expanded)
Emetite, a new sulphate mineral, Ca7Na3K(SO4)(9), has been identified in two boreholes drilled in the Emet borate district (Miocene; western Anatolia, Turkey). The evaporitic succession in these boreholes is mainly formed of a glauberite-probertite alternation. The new mineral always appears as a diagenetic phase consisting of aggregates of tiny (from few mu m to tens of mu m) crystals that replace glauberite at the top of glauberite units. The replacement was caused by the interaction of glauberite with K-rich interstitial brines, which are more concentrated than those from which glauberite had precipitated.