( PO 4 ) ( CO 3 ) ] F , the first CO 3-bearing intercalated 2 hexagonal antiperovskite from Negev Desert , Israel

17 The new mineral stracherite, BaCa6(SiO4)2[(PO4)(CO3)]F (R 3 m, a = 7.0877(5) Å, c = 18 25.201(2) Å, V = 1096.4(1) Å, Z = 3), belongs to the zadovite group, which also includes 19 zadovite, BaCa6[(SiO4)(PO4)](PO4)2F; aradite, BaCa6[(SiO4)(VO4)](VO4)2F and gazeevite, 20 BaCa6(SiO4)2(SO4)2O. All minerals of this group exhibit single-layer antiperovskite modules, 21 which are intercalated with tetrahedral layers. In stracherite, the first СО3-bearing intercalated 22 hexagonal antiperovskite, about 38% of the (PO4) tetrahedra are randomly substituted by 23 planar (CO3) groups. The mineral was discovered in spurrite rocks of the Hatrurim Complex 24 in the Negev Desert near Arad, Israel. Associated minerals are spurrite, calcite, 25

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