The points constructed according to the methods just described are distributed on the proposed diagram, as can be seen immediately, in a certain orderly manner along an arc, making it possible to predict the optical properties of as yet undiscovered biaxial minerals: it is highly probable that for such minerals, their relative birefringence determinants will give points on the diagram distributed between the already known points on the same arc of our diagram. Consequently, the reverse is also true: taking any point between those already known on this arc, we can expect that it corresponds to a mineral that is not yet known, and based on the determinants found, we can calculate the angle of the optical axes using the known formulas that were given at the beginning of this article.

The structure of parts of the earth’s crust, such as the modern Ural Range is something so immensely complex that no human imagination is able to comprehend it in all its details, and any attempt in this direction reduces it to a more or less detailed schematic representation. But especially grandiose mining areas conceal not only this complexity of structure, but also so many subsequent alterations and transformations that even a schematic representation of the processes that occurred there encounters barely surmountable difficulties. It is enough to point to the intense activity of metamorphism and weathering to highlight these distinctive features. See the results of the study in the article.