...Pete J. Dunn; Joel D. Grice; William C. Metropolis Abstract Zodacite is a new Mn-dominant member of the montgomeryite group. Microprobe analysis yielded MgO 0.2, MnO 4.8, CaO 18.0, A1 2 O 3 7.7, Fe 2 O 3 14.1, P 2 O 5 34.8, H 2 O (by difference) 20.4, total = 100.0 wt%. The idealized formula is Ca...

... -centred monoclinic cells and general formula Ca 4 A 2+ B 3+ 4 (PO 4 ) 6 (OH) 4 ·12H 2 O, where A and B = Mg and Fe for calcioferrite, Mg and Al for montgomeryite, Mn and Fe for zodacite and Mn and Al for fanfaniite, together with the triclinic mineral kingsmountite, Ca 3 Mn 2+ Fe 2+ Al 4 (PO 4 ) 6 (OH) 4...

...Joel D. Grice; Pete J. Dunn; Robert A. Ramik Abstract Jahnsite-(CaMnMn), a new mineral species from Mangualde, Beira, Portugal, occurs as equant, brownish yellow crystals to 0.5 mm, associated with phosphosiderite, zodacite, varulite, and microcline. The mineral is transparent and has a vitreous...

... ) and zodacite ( Dunn et al. , 1988 ) have in common the same general formula, Ca 4 AB 4 (PO 4 ) 6 (OH) 4 ·12H 2 O and similar powder XRD patterns, that can be indexed with C -centred monoclinic unit cells, a  ~ 10.1, b  ~ 24.1, c  ~ 6.3 Å and β ~ 91.2°. A and B are divalent and trivalent cations...

.../montgomeryite group with end-member formula Ca 4 MnFe 4 (PO 4 ) 6 (OH) 4 .12H 2 O. This member has subsequently been described from Mangualde, Portugal, and named zodacite ( Dunn et al. , 1988 ). The mineral coating the surface of fibrous-form nordgauite differs from zodacite in being F-bearing and having Al...

... to calcioferrite, montgomeryite, kingsmountite, and zodacite having same general formula, Ca 4 A 2+ B 4 3 + (PO 4 ) 6 (OH) 4 ·12H 2 O and similar unit-cells ( A 2+ and B 3+ = Mg and Fe for calcioferrite, Mg and Al for montgomeryite, Fe 2+ and Al for kingsmountite, and Mn and Fe...

...  = Fe 3+ : calcioferrite, zodacite), and the montgomeryite subgroup ( B  = Al: montgomeryite, kingsmountite, fanfaniite). Aniyunwiyaite is discredited as being kingsmountite, which is assigned a triclinic structure with an ideal formula changed to Ca 3 MnFeAl 4 (PO 4 ) 6 (OH) 4 ·12H 2 O...

..., zodacite), and the montgomeryite subgroup ( B = Al: montgomeryite, kingsmountite, fanfaniite). Aniyunwiyaite is discredited as being kingsmountite, which is assigned a triclinic structure with an ideal formula changed to Ca 3 MnFeAl 4 (PO 4 ) 6 (OH) 4 ·12H 2 O. Application of the IMA-CNMNC...

...), pseudoautunite, sincosite, strengite, tavorite, thadeuite, tiptopite, viitaniemiite, vyacheslavite and zodacite. Barbosalite, benauite, bergenite, bleasdaleite, brockite, carbonate-fluorapatite, cheralite-(Ce), delvauxite, embreyite, gladiusite, kastningite, kidwellite, kingite, metaschoderite...