| 41. | "' Berzelianite "'is a rare copper selenide mineral with the formula tetragonal system.
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| 42. | In total there are six crystal families : triclinic, monoclinic, orthorhombic, tetragonal, hexagonal and cubic.
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| 43. | They are found in seven orthorhombic, five tetragonal and five cubic space groups, all with centered lattice.
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| 44. | The tetragonal crystals are hemihedral with parallel faces ( like scheelite ), and at times of considerable size.
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| 45. | Its tetragonal crystals are a translucent blue, white, colorless or pink with a vitreous to dull lustre.
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| 46. | The known oxyhalides of berkelium include BkOCl, BkOBr and BkOI; they all crystallize in a tetragonal lattice.
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| 47. | Lead ( II ) oxide ( formula : PbO ) can occur in one of two lattice formats, tetragonal.
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| 48. | Being the dual of a uniform polychoron, it is cell-transitive, consisting of 288 congruent tetragonal disphenoids.
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| 49. | For example, the tiling in the 3D case of the function is an orientation of the tetragonal disphenoid honeycomb.
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| 50. | A similar mineral, " sinjarite " the dihydrate of calcium chloride, crystallizes in the tetragonal system.
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