tetragonal-pyramidal class
1Crystal 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.… …
2Marialite — General Category Silicate mineral Chemical formula Na4Al3Si9O24Cl Crystal symmetry Tetragonal 4/m Unit cell a …
3Apophyllite — Infobox mineral name = Apophyllite category = boxwidth = boxbgcolor = caption = formula = (K,Na)Ca4Si8 O20(F,OH) • 8H2O molweight = color = Usually white, colorless; also blue, green, brown, yellow, pink, violet habit = prismatic, tabular,… …
4Orthorhombic crystal system — An example of the orthorhombic crystals, aragonite In crystallography, the orthorhombic crystal system is one of the seven lattice point groups. Orthorhombic lattices result from stretching a cubic lattice along two of its orthogonal pairs by two …
