F ig . 3. Photo and X-ray maps of the acicular inclusion of kotulskite (nos. 4, 5) in micro-inclusion of moncheite (nos. 1–3). Sample PR2–4 ( Table 2 ).

Figure 8. Analyses of kotulskite, Pd(Te,Bi), should plot on the line of 50 at % Pd.

F ig . 7. Composition of kotulskite – sobolevskite – (sudburyite) solid-solution series from the MSP (in at.%).

F ig . 6. Composition of kotulskite – sobolevskite – (sudburyite) solid-solution series in at.% from the upper part of the Keivitsansarvi deposit plotted in the PdBi–PdTe–PdSb diagram. Symbols: dots: samples from drill core R–695, and crosses: samples from drill core R–713.

TABLE 3. COMPOSITION OF SUDBURYITE–(KOTULSKITE) FROM THE WELLGREEN Ni–Cu–PGE DEPOSIT

TABLE 4. COMPOSITION OF KOTULSKITE – (SUDBURYITE) – SOBOLEVSKITE FROM THE WELLGREEN Ni–Cu–PGE DEPOSIT

F ig . 3. Compositional variation of the sudburyite – kotulskite – sobolevskite solid solution in the Wellgreen deposit. Results of 43 analyses of sudburyite, kotulskite and sobolevskite and of 59 analyses of phases of the type Me (Te,Sb,Bi) 1+ x are projected onto the Te–Bi–Sb ternary

F ig . 4. Backscattered electron images of representative platinum group minerals at the Lac des Iles mine and Legris Lake. A. Kotulskite (Pd(Te,Bi), white in the image) in amphibole in the Poplar zone, Legris Lake property. B. Kotulskite (white in the center) in actinolite blades, in the Main

F ig . 6. Pd (+ Pt + Ni) – Te – Bi (+ Sb) diagram showing the compositional variations (in at.%) of the Pd–Te–Bi minerals of sobolevskite, kotulskite, and michenerite in the MSP. The fields of the reported compositions of michenerite ( Harney & Merkle 1990 ) and those of the kotulskite

F ig . 1. Backscatter electron images of lukkulaisvaaraite and associated minerals; ( a ) lukkulaisvaaraite in intergrowths with telargpalite and kotulskite rimed by tulameenite, holotype specimen; ( b ) moncheite surrounded by lukkulaisvaaraite, telargpalite, Bi-rich kotulskite and tulameenite

of moncheite (white) and kotulskite (light gray); b , splicing of moncheite and pentlandite as crystallization products of the iss solution; c , the needle (the cross section of the plate?) of moncheite with inclusions of telargpalite; d , the composite grain of moncheite and kotulskite with inclusions

F ig . 5. Pd(+Pt, Ni)–Te–(Bi+Sb) diagram showing the compositional variation in at.% of merenskyite, kotulskite – sobolevskite solid solution and michenerite in the upper part of the Keivitsansarvi deposit. The fields of the reported composition of merenskyite, michenerite and froodite [taken

Fig. 3 Back-scattered electron images of selected experimental products depicting the phase associations. (A) Fine intergrowths of pašavaite (Pd 3 Pb 2 Te 2 ) with altaite (PbTe), run 140. (B, C) Altaite (PbTe) in association with kotulskite Pd(Te,Pb) ss , runs 11 and 13. (D) Intergrowths

Fig. 3 Back-scattered electron images of selected experimental products depicting the phase associations. (A) Fine intergrowths of pašavaite (Pd 3 Pb 2 Te 2 ) with altaite (PbTe), run 140. (B, C) Altaite (PbTe) in association with kotulskite Pd(Te,Pb) ss , runs 11 and 13. (D) Intergrowths

of plagioclase (pl) and secondary amphiboles. The PGM grain shown in the inset is a merteite I (mrt), hosted in the margin of an amphibole. D. Amphibolite inclusion made up of amphibole and minor quartz with chalcopyrite (cpy) and minor magnetite (mt), showing a lath of kotulskite (kt) included in recrystallized

TABLE 2. REPRESENTATIVE COMPOSITIONS OF SOBOLEVSKITE, MICHENERITE, MONCHEITE, SOPCHE1TE, FROODITE AND KOTULSKITE

Fig. 13. (a–d) BSE images showing examples of platinum-group minerals in low-sulfide zones hosted by the Vologochan−Pyasinskiy sequences. The symbol Sov is sobolevskite, Ktu is kotulskite, Sdb is sudburyite, Mch is michenerite, Met-II is mertieite-II, and Tsm is tsumoite. Ccp is chalcopyrite. Chl