Citation: Bonazzi, P.; Menchetti, S.; Garbarino, C. (1992). Crystal chemistry of piemontites: REE-bearing piemontite from Monte Brugiana, Alpi Apuane, Italy. European Journal of Mineralogy (1,1989-), 4, pp. 23-33.
Formula: Al1.9 Ca1.66 Fe1.1 H La0.16 Mn0.18 O13 Si3
Chemical name:(Ca.82 Mn.18) (Ca.84 La.16) (Al.82 Fe.18) Al (Al.08 Fe.92) Si3 O12 (O H)
Cell parameters:
a = 8.845 Å
b = 5.668 Å
c = 10.152 Å
α = 90°
β = 115.35°
γ = 90°
List type: noninterleaving
List: 3D
Combined 3D structure and graph
span 1{1 1 1}
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JSmol combined CIF view
Linear Graph Knot
Molecules
CIF datablock 0, entity 1 of 1
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Al6 Ca4 Fe6 H2 La2 Mn2 O26 Si6 (Al3 Ca2 Fe3 H La Mn O13 Si3)