Detrital clinopyroxene and amphibole from the Kazanian-Stage chromite-bearing sandstones in the South Pre-Urals as an indicator of chromian spinel source. (2022). Proceedings of Voronezh State University. Series: Geology, 3, 41-51. https://doi.org/10.17308/geology/1609-0691/2022/3/41-51