Plagioclase and Apatite from Exsolution Structures in Minerals from Mantle Xenoliths

摘要

Chlorine- and alkali-bearing minerals unusual for the kimberlitic matrix from nonserpentinized kimber-lite of the Udachnaya pipe (Yakutia) with an anomalously low concentration of water [ 1 ] were described in the groundmass [2|, as chloride-carbonate nodules [3], and in melt inclusions in olivines from this kim-berlite [4]. Phlogopite, apatite, calcite, djerfisherite [5], and sodalite [5, 6] were observed in xenoliths of deformed lherzolites from the Udachnaya pipe; tetra-ferriphlogopite, halite, sylvite, alkaline carbonates, and sulfates were registered in melt inclusions from all primary minerals of these xenoliths [5]. Graphite-