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polyhedra

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Journal Article
Published: 01 September 2020
American Mineralogist (2020) 105 (9): 1424–1431.
... polyhedra. Positional disorder of two H sites of H 2 O molecules was observed by the neutron structure refinement and corroborated by the maximum-entropy method calculation, which consistently provided a model based on a static disorder, rather than a dynamic one. The H-bonding network in the structure...
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Journal Article
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 155–165.
... = 0.085. Kainotropite represents a novel structure type. Cu 2+ polyhedra (distorted tetragonal pyramids and strongly distorted octahedra) and Fe 3+ octahedra are connected via common edges to form zigzag ribbons. Adjacent ribbons are connected by both V 2 O 7 and VO 4 groups (isolated from each other...
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Journal Article
Published: 08 April 2020
The Canadian Mineralogist (2020) 58 (2): 167–181.
... with three M O 6 polyhedra; each M O 6 polyhedron is connected with six T O 4 tetrahedra ( Fig. 1 ). The X site is 12-coordinated with symmetry ; it is located between the [ M ( T O 4 ) 2 ] layers and is surrounded by six T O 4 tetrahedra ( Fig. 2 ). Such a construction, consisting of T O 4...
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