Calcite and dolomite in intrusive carbonatites. II. Trace-element ...
The present work focuses on calcite and dolomite because these minerals account for the bulk of igneous carbonate material. Calcite is a trigonal CaCO 3 polymorph (Markgraf and Reeder 1985; Table 1) that at ambient conditions, forms only limited solid solutions with isostructural Mg, Mn and Fe 2+ carbonates, and aragonite-type orthorhombic SrCO 3, BaCO 3 and PbCO 3 (Chang and Brice 1972; Brice ...