Trace Elements and Minerals in Fumarolic Sulfur: The Case of Ebeko Volcano, Kuriles

Figure 7

Rare phases from fumarolic incrustations of Ebeko volcano. (a) Small aggregate of palladian gold attached to sulfur surface. (b) Aggregate and a single crystal of cadmoindite (CdIn₂S₄) on sulfur surface. (c) Aggregate of argentite (Ag₂S) crystals. (d) Aggregate of cinnabar (HgS) crystals. (e) Crystals of (NH₄)As₄O₆I (white) attached to sulfur (gray). (f) Two globules of famatinite (Cu₃SbS₄) (white) surrounded by sulfur (light gray) and alunite (gray). (g) Aggregate of Cu-Sn sulfide (white) on sulfur surface (gray). (h) Aggregate of cotunnite (PbCl₂) (white crystals) mixed with silicate particles. SEM BSE images.

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