- hexagonal-dipyramidal class
- крист. гексагонально-дипирамидальный класс
The New English-Russian Dictionary of Radio-electronics. F.V Lisovsky . 2005.
The New English-Russian Dictionary of Radio-electronics. F.V Lisovsky . 2005.
dihexagonal-dipyramidal — adjective : of or characterized by the symmetry of the class of crystals in the hexagonal system having a vertical hexad axis, six horizontal diad axes, six vertical planes, and a horizontal plane of symmetry … Useful english dictionary
Crystal system — Diamond crystal structure consists of face centered cubic lattice. In crystallography, the terms crystal system, crystal family, and lattice system each refer to one of several classes of space groups, lattices, point groups, or crystals.… … Wikipedia
Morganite — Morganite, also known as Pink Beryl, Rose Beryl, Pink Emerald, and Cesian Beryl, is a rare light pink to rose colored gem quality variety of the mineral beryl (Be3Al2(SiO3)6), which is better known for its green variety (emerald) and its blue… … Wikipedia
Beryl — Beril redirects here. For a character of Tolkien s legendarium, see Beril (House of Bëor). Heliodor redirects here. For the masculine name, see Heliodorus (disambiguation). For other uses, see Beryl (disambiguation). Beryl Three varieties of… … Wikipedia
Nickeline — General Category Arsenide mineral Chemical formula nickel arsenide:NiAs … Wikipedia
Bastnäsite — Infobox mineral name = Bastnäsite category = Carbonate mineral boxwidth = boxbgcolor = imagesize = caption = formula = (Ce,La,Y)CO3F molweight = color = Honey yellow, reddish brown habit = Tabular to equant striated crystals, also granular,… … Wikipedia