Natural placer mineral assemblage characteristics of chromite deposit and its significance for ore exploration

This paper aims to explore types of heavy minerals related to basic-ultrabasic rock chromite deposits and their combination characteristics in Tibet, Xinjiang, Gansu, Qinghai, Inner Mongolia, Hebei and Shaanxi. 14 typical chromite deposits were selected to study the natural response of heavy minerals. It is found that the responding minerals in these deposits are mainly chromite and chromium spinel. In addition, the authors calculated the frequencies of occurrence of heavy minerals involved and displayed the natural heavy mineral assemblages in chromite deposits related to basic-ultrabasic rocks audio-visually through illustrations, thus providing important mineralogical reference data for the exploration of chromite deposits