The determinant of minerals is created for students of geologists, meteorologists, geographers, all those who have a course in mineralogy. The annex contains more than 200 minerals. It is possible to search for the mineral in terms of its hardness, color and color. There are classifications of minerals by group and type of origin. There is an abundance of information about each mineral: color, hardness, formula, density, color of the line, image, syngony.