A method for calculating the simplest face symbol with a certain accuracy

Abstract

Let's imagine a crystal measured on a universal, theodolite goniometer. Let's assume that we have to measure a face that has various defects in formation and gives not one but several signals (due to the development of vicinaloids). Under such conditions, the measurement accuracy is significantly reduced and rather large errors can be made in the calculations of the angles φ (along the vertical limb of the goniometer) and p (along the horizontal limb). Even if the edge is formed well enough, it is still often possible to vouch for the accuracy of only a few minutes, and greater accuracy is achieved only in exceptional cases.