rhombohedral


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rhom·bo·he·dral

 (rŏm′bō-hē′drəl)
adj.
1. Of or relating to a rhombohedron.
2. Mineralogy Of or relating to a crystal having three axes of equal length intersecting at oblique angles.

rhombohedral

(ˌrɒmbəʊˈhiːdrəl)
adj
1. (Mathematics) of or relating to a rhombohedron
2. (Chemistry) crystallog another term for trigonal2

rhom·bo·he·dral

(rŏm′bō-hē′drəl)
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.rhombohedral - having threefold symmetry
crystallography - the branch of science that studies the formation and structure of crystals
symmetric, symmetrical - having similarity in size, shape, and relative position of corresponding parts
References in periodicals archive ?
21 Structure Rhombohedral Rhombohedral Rhombohedral calcite calcite calcite Special Low High purity Hydrophobic characteristics roughness treatment TABLE 3.
The wall areas contain subhedral rhombohedral crystals approximately 5-10 [micro]m in size (Fig.
Amphibole minerals are in form of subautomorphic crystals with rhombohedral cleavage inside granites (Fig.
On the other hand, the XRD spectra of all the FHA samples calcined at 900[degrees]C, showed the presence of well crystallined hexagonal HA together with [beta]-TCP having rhombohedral structure (JCPDS file: 09-0169) [10].
Some clasts are cemented by meso-tocoarse calcite crystals and rhombohedral dolomite crystals.
It usually occurs as rhombohedral crystals developing interpenetration twinning (Figures 6c-6d) In other cases, it has a pseudocubic habit in which angles between their faces are closer to right angles (Figures 6e) Figure 6f gives an example of complexly-twinned (phacolitic) chabazite crystals, showing streaks parallel to the edges of the crystal Natrolite occurring as groups of randomly oriented acicular crystals associated with trapezohedral analcime crystals is illustrated in Figure 6g Nontronite occurs as fine-grained random aggregates of flaky crystals along with trapezohedral analcime crystals (Figure 6h).
Structurally, aragonite is orthorhombic and therefore different from rhombohedral calcite and dolomite; however the C[O.
The aragonite PCC of orthorhombic habit and calcite PCC of rhombohedral habit show an almost similar trend in coated paper properties with the greatest smoothness and paper gloss.
78 GPa, cubic ScF3 becomes rhombohedral ScF3 via octahedral tilting; and pressurizing above 5.
i] is rhombohedral, is as follows: A dolomite crystallite [G.