FIG. 1. Placement of KSKM tantalum included in the analyzed sample. Legend: 1–5 - KSKM types: 1 - pegmatite, 2 - granite, 3 - alkaline granite, 4 - foid, 5 - carbonatite; 6–10 - supercontinental cycles: 6 - Kenorian, 7 - Colombian, 8 - Rodinian, 9 - Pangean, 10 - Amazian. Deposits: 1 - Pilgangur, 2 - Vodzhina, 3 - Tanko, 4 - Rose, 5 - Bold Hill, 6 - Mount Dinz, 7 - Mount Cattlin, 8 - Greenbushes, 9 - Bikita, 10 - Arcadia, 11 - Kolmozerskoe, 12 - Volta Grande, 13 - Vishnyakovskoe, 14 - Goltsovoe, 15 - Katuginskoe, 16 - Brockman, 17 - Pitinga, 18 - Nechalacho, 19 - Mount Weld, 20 - Kamativi, 21 - Manono Kitotolo, 22 - Motzfeld, 23 - Tanbrez, 24 - Krevier, 25 - Kenticha, 26 - Tri-Aloez, 27 - Tastigskoye, 28 - Morrois, 29 - Marropino, 30 - Nanping, 31 - Alberta-1, 32 - Bakenoe, 33 - Nuweibi, 34 - Abu Dabbab, 35 - Umm-Nuggat 36 - Ascension-Border, 37 - E Assier, 38 - Limu, 39 - Alakha, 40 - Jabal-Hamra, 41 - Guraya, 42 - Khalzan-Buregtey, 43 - Ulug-Tanzek, 44 - Snezhnoe, 45 - Zashikhinskoe, 46 - Kanyika, 47 - Lovozerskoe, 48 - Mabuni, 49 - Beloziminskoe, 50 - Srednesiminskoe, 51 - Tukhta-Vara, 52 - Upper-Fir, 53 - Zhenli, 54 - Zavitinskoe, 55 - Parun, 56 - Tagavlor, 57 - Xianhualin, 58 - Datszishan, 59 - Ichun, 60 - Oryol, 61 - Etykinskoe, 62 - Baihuanao, 63 - Kugarok, 64 - Tungi, 65 - Baerzhe.