Brockite from Soviet Union (1922-1991)
Kazakhstan | |
| Pekov, Igor V. (1998) Minerals first discovered on the territory of the former Soviet Union. Ocean Pictures, Moscow. 369pp. |
Russia | |
| Sorokina, E. S., Rassomakhin, M. A., Nikandrov, S. N., Karampelas, S., Kononkova, N. N., Nikolaev, A. G., ... & Kotlyarov, V. A. (2019). Origin of Blue Sapphire in Newly Discovered Spinel–Chlorite–Muscovite Rocks within Meta-Ultramafites of Ilmen Mountains, South Urals of Russia: Evidence from Mineralogy, Geochemistry, Rb-Sr and Sm-Nd Isotopic Data. Minerals, 9(1), 36. |
| Pavel.M. Kartashov (n.d.) analytical data. |