In crystallography, the rhombohedral (or trigonal) crystal system is one of the 7 lattice point groups. A crystal system is described by three basis Vector (spatial). In the rhombohedral system, the crystal is described by vectors of equal length, all three of which are not mutually orthogonal. The rhombohedral system can be thought of as the cubic system stretched along a body diagonal. In some classification systems, the rhombohedral system is grouped into a larger hexagonal (crystal system). There exists only one rhombohedral Bravais lattice. The crystallographic point group that fall under this crystal system are listed below, followed by their representations in international notation and Schoenflies notation, and example crystals. {| cellpadding=8 |name |international |Schoenflies |example |- |rhombohedral holohedral | |''D3d'' |calcite |- |rhombohedral hemimorphic | | ''C3v'' |tourmaline |- |rhombohedral tetartohedral | |''S6'' |dolomite |- |trapezohedral |32 |''D3'' |quartz |- |rhombohedral tetartohedral | |''C3'' | |} Crystallography
My reference book (a Peterson field guide) lists the same name for the 3 and 3bar classes, which I think must be a typo. But I put it in anyway, rather than just take a guess based on the names of the triclinic classes, as I did at first. If anyone knows better, please fix it. User:Tantalate 19:46, 21 May 2004 (UTC)
See other meanings of words starting from letter:
Words begining with Rhombohedral:
Rhombohedral
Rhombohedral
Rhombohedral_cleavage
Rhombohedral
In crystallography, the rhombohedral (or trigonal) crystal system is one of the 7 lattice point groups. A crystal system is described by three basis Vector (spatial). In the rhombohedral system, the crystal is described by vectors of equal length, all three of which are not mutually orthogonal. The rhombohedral system can be thought of as the cubic system stretched along a body diagonal. In some classification systems, the rhombohedral system is grouped into a larger hexagonal (crystal system). There exists only one rhombohedral Bravais lattice. The crystallographic point group that fall under this crystal system are listed below, followed by their representations in international notation and Schoenflies notation, and example crystals. {| cellpadding=8 |name |international |Schoenflies |example |- |rhombohedral holohedral | |''D3d'' |calcite |- |rhombohedral hemimorphic | | ''C3v'' |tourmaline |- |rhombohedral tetartohedral | |''S6'' |dolomite |- |trapezohedral |32 |''D3'' |quartz |- |rhombohedral tetartohedral | |''C3'' | |} Crystallography
Rhombohedral
My reference book (a Peterson field guide) lists the same name for the 3 and 3bar classes, which I think must be a typo. But I put it in anyway, rather than just take a guess based on the names of the triclinic classes, as I did at first. If anyone knows better, please fix it. User:Tantalate 19:46, 21 May 2004 (UTC)
See other meanings of words starting from letter:
R
RA | RB | RC | RD | RE | RF | RG | RH | RI | RJ | RK | RL | RM | RN | RO | RP | RS | RT | RU | RW | RX | RY | RZ |Words begining with Rhombohedral:
Rhombohedral
Rhombohedral
Rhombohedral_cleavage
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