The methodological aspects and limitations of using the chemical composition of chrome spinels in forecasting and prospecting for diamond deposits (the case of the Alymdzha River basin, Yakutia)

A methodology is proposed for studying chrome spinels during diamond prospecting, with the use of variations in the chemical composition of the minerals belonging to different genetic groups in order to distinguish the kimberlite and non-kimberlite varieties from a polygenic association. The recommended succession of investigation of the chrome spinels will help to avoid mistakes in identifying the peculiarities of their chemistry and will facilitate to clarify the forecast when searching for new kimberlite bodies.