Abstract:According to correct crystal orientation,geometric constant is consistent with the unit cell parameter,but as to scapolite and stolzite in the "Atlas of Mineral Sands"and braunite in the upper volume of the "Systematic Mineralogy", the crystal face (100) is consistent with the unit cell (110 ). Although some minerals have correct orientations, there are some mistakes in drawing crystal forms and symbols. These minerals are as following:wulfenite in the lower volume of "Systematic Mineralogy",cafomel,chalcop...