Winners of the Nomination “Mineral of the Year” (Period 2014–2021): Contribution into Mineralogical Crystallography

The principal specific features are considered for new minerals discovered during the period 2014–2021 and nominated as winners of their competition “Mineral of the Year” announced by the IMA in 2014. The corresponding publications contain the detailed description of phenomena complicating the real structure (merelaniite), the uncommon combination of chemical elements (seaborgite), fragments of compounds previously known only in synthetic nonorganic phases (ophirite, chanabayaite, bojarite). The special attention is focused upon the indicative role of these minerals for reconstruction of physical-chemical conditions accompanying their crystallization, as well as to their position in corresponding transformational-genetic series. There is proposed the crystal growth model of the new W-bearing mineral tewite, which has been proved experimentally.