Solid Solution Between Epidote and Hancockite from Nezilovo, Macedonia

Abstract

A solid solution between the epidote formula and hancockite formula (Pb equivalent of epidote) was found in the “mixed series” of the Pre-cambrian complex in the central part of the Pelagonian massif near the village of Nezilovo. The mineral is determined by optical investigation, X-ray diffraction and microprobe analyses. A thermogravimetric analysis was performed and determined 1.68 wt.% of H2O. Two distinct compositions were found: one with 20-25 mol% and one with about 70 mol% of hancockite component, indicating two different parageneses where the Ca in epidote is partly substituted by Pb.