1. Prenucleus Clusters and Nonclassical Crystal Formation

   • A. M. Askhabov

   OriginalPaper 08 February 2021 Pages: 683 - 689

   

2. The Systematics of Crystal Polymorphic Transformations (Generalized on the Basis of Buerger’s Criteria)

   • S. K. Filatov
   • P. Paufler

   OriginalPaper 08 February 2021 Pages: 690 - 703

   

3. Mineral Systems Based on the Number of Species-Defining Chemical Elements in Minerals: Their Diversity, Complexity, Distribution, and the Mineral Evolution of the Earth’s Crust: A Review

   • V. G. Krivovichev
   • M. V. Charykova
   • S. V. Krivovichev

   OriginalPaper 08 February 2021 Pages: 704 - 718

   

4. On the Genesis of “White Granite” from the Kester Harpolith, Arga–Ynnakh–Khaya Pluton, East Yakutia

   • V. I. Alekseev
   • Yu. B. Marin

   OriginalPaper 08 February 2021 Pages: 719 - 730

   

5. Finding forms and Micro- and Nanoscale Assemblages of Gold as Indicators of Formation Conditions, Distribution, and Typification of Orogenic Deposits of Uzbekistan (South Tien Shan)

   • R. I. Koneev
   • R. A. Khalmatov
   • A. N. Krivosheeva

   OriginalPaper 08 February 2021 Pages: 731 - 742

   

6. The Defect-Impurity Composition of Diamond Crystals with 〈100〉 Growth Pyramids from Placers of the Krasnovishersk District, the Urals

   • I. V. Klepikov
   • E. A. Vasilev
   • A. V. Antonov

   MINERALS AND MINERAL PARAGENESES 08 February 2021 Pages: 743 - 753

   

7. Rare-Earth Minerals from Carbonatite Veins in the Soustov Pluton, Kola Peninsula, as an Indicator of its Ore Specialization

   • M. N. Petrovskii

   MINERALS AND MINERAL PARAGENESES 08 February 2021 Pages: 754 - 763

   

8. Meliphanite and Leucophanite from the Sakharjok Alkaline Massif, Kola Peninsula

   • L. M. Lyalina
   • Ye. E. Savchenko
   • E. A. Selivanova

   MINERALS AND MINERAL PARAGENESES 08 February 2021 Pages: 764 - 772

   

9. The Age of Monazite from the Ichet’yu Occurrence, Middle Timan (CHIME and LA–ICP–MS Methods)

   • A. B. Makeyev
   • S. G. Skublov
   • S. H. Serre

   MINERALS AND MINERAL PARAGENESES 08 February 2021 Pages: 773 - 786

   

10. New Data on Platinum Group Element Bearing Chromitites from the Kurtushiba Ophiolite, Western Sayan

    • A. N. Yurichev
    • A. I. Chernyshov

    MINERALS AND MINERAL PARAGENESES 08 February 2021 Pages: 787 - 795

    

11. New Data for Malanite and Cuprorhodsite from Chromitites of the Bushveld Complex, South Africa

    • N. S. Rudashevsky
    • V. N. Rudashevsky

    MINERALS AND MINERAL PARAGENESES 08 February 2021 Pages: 796 - 802

    

12. Polymorphism and Isomorphic Substitutions in the \({\text{Cu}}_{3}^{{2 + }}\)(T ⁵⁺O₄)₂ Natural System with T = As, V, or P

    • I. V. Pekov
    • N. V. Zubkova
    • D. Yu. Pushcharovsky

    MINERAL CRYSTALLOGRAPHY 08 February 2021 Pages: 803 - 818

    

13. The High-Temperature Behavior of Axinite-(Mn), Kornerupine, and Leucosphenite

    • M. G. Krzhizhanovskaya
    • V. A. Firsova
    • I. V. Pekov

    MINERAL CRYSTALLOGRAPHY 08 February 2021 Pages: 819 - 826