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tetrahedra

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Journal Article
Published: 05 April 2017
European Journal of Mineralogy (2017) 29 (5): 907-914.
... [ F o > 4σ F ]. The structure is the same as that of other members of the ardennite group. It contains chains of edge-sharing Mn 3+ and Al octahedra extending along the b axis, which are linked into a framework by sharing corners with SiO 4 tetrahedra and with Si 3 O 10 tetrahedral groups. Within...
FIGURES
Journal Article
Published: 01 November 2001
European Journal of Mineralogy (2001) 13 (6): 1071-1078.
... the conditions for the interlayer coordination (which must occur between two facing “hexagonal” rings of tetrahedra), the ± b /3 slips in the n -th layer require the same slips for the layer stacked immediately above it. Consequently, in a dioctahedral mica the position of a filled M site comes to correspond...
FIGURES
Journal Article
Published: 01 August 2000
The Canadian Mineralogist (2000) 38 (4): 861-868.
... Ca 0.29 □ 0.31 ). The X -site occupancy allows conjecture on the degree of order of B atoms in individual six-membered rings of tetrahedra; two different schemes of order are possible. The amount of [4] B in the optimized formula ( [4] B = 1.06 apfu ) allows, on average, approximately one [4...
Journal Article
Published: 01 June 1999
The Canadian Mineralogist (1999) 37 (3): 731-762.
Journal Article
Published: 01 February 1999
The Canadian Mineralogist (1999) 37 (1): 113-118.
Journal Article
Published: 01 December 1998
The Canadian Mineralogist (1998) 36 (6): 1587-1594.
Journal Article
Published: 01 October 1998
The Canadian Mineralogist (1998) 36 (5): 1327-1338.
Journal Article
Published: 01 August 1998
Mineralogical Magazine (1998) 62 (4): 451-459.
... leadhillite including three distinct types of layers. Layer A includes sulphate tetrahedra, Layer B is composed of Pb and OH, while Layer C is composed of Pb and CO 3 with topology identical to that in cerussite. In both macphersonite and leadhillite these layers are stacked along [010] as …BABCCBABCC...
Journal Article
Published: 01 August 1998
Mineralogical Magazine (1998) 62 (4): 461-469.
... edges to form rutile-like chains, three of which join by the sharing of octahedral edges to form triple chains that are parallel to [001]. The MoO 4 tetrahedra are linked to either side of the triple chain of Cu (super 2+) phi 6 octahedra by the sharing of two vertices per tetrahedron, and the resulting...
Journal Article
Published: 01 June 1998
The Canadian Mineralogist (1998) 36 (3): 809-815.
Journal Article
Published: 01 June 1997
The Canadian Mineralogist (1997) 35 (3): 765-772.
Journal Article
Published: 01 June 1997
The Canadian Mineralogist (1997) 35 (3): 707-712.
Journal Article
Published: 01 February 1992
American Mineralogist (1992) 77 (1-2): 76-84.
Journal Article
Published: 01 December 1991
American Mineralogist (1991) 76 (11-12): 1872-1883.
Journal Article
Published: 01 June 1990
American Mineralogist (1990) 75 (5-6): 501-507.