- In geometry, a
prism is a
polyhedron comprising an n-sided
polygon base, a
second base
which is a
translated copy (rigidly
moved without rotation) of the...
- com.
Retrieved 2014-08-03. "Minerals in the
Hexagonal crystal system,
Dihexagonal Pyramidal class (6mm)". Mindat.org.
Retrieved 2014-08-03. Jaswon, Maurice...
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Hexagonal (6/m 2/m 2/m)
Space group: P6/mсc
Space group (6/m 2/m 2/m) –
dihexagonal dipyramidal Unit cell a = 9.21 Å, c = 9.19 Å; Z = 2
Identification Formula...
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system 6H polytype, most common:
hexagonal Crystal class 6H polytype:
dihexagonal pyramidal (6mm) H-M symbol: (6mm)
Space group 6H polytype: P63mc Identification...
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metallic opaque copper-red
mineral crystallizing in the
hexagonal -
dihexagonal dipyramidal crystal system. It is
typically m****ive to
reniform in habit...
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Museum of
Islamic Art, Doha,
Qatar Patricia Emerald, 632
carats uncut,
dihexagonal (12 sided);
discovered in
Colombia in 1920,
resides in the
American Museum...
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classification 1.CB.05a
Crystal system Hexagonal or
Rhombohedral Crystal class Dihexagonal dipyramidal (6/mmm) Hermann–Mauguin notation: (6/m 2/m 2/m)
Space group...
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Notes crystals in host rock
probably Habachtal (1695–1696 AD)
dihexagonal (12 sided)
dihexagonal (12 sided)
Hurlbut &
Kammerling 1991, p. 203. "Emerald Quality...
- {\displaystyle \mathbb {D} _{12}=\mathbb {Z} _{6}\rtimes \mathbb {Z} _{2}}
dihexagonal-pyramidal C6v
polar 12
dihedral D 12 = Z 6 ⋊ Z 2 {\displaystyle \mathbb...
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Strunz classification 1.CB.05b
Crystal system Hexagonal Crystal class Dihexagonal dipyramidal (6/mmm) H-M symbol: (6/m 2/m 2/m)
Space group P6/mmm Unit...
