An electron micrograph of volcanic sublimates (minerals) in natural colors. Two different forms of copper molybdate Cu3O(MoO4)2 (cupromolybdite) – a mineral from fumarolic incrustations, Tolbachik, Kamchatka. Both forms of the mineral - bright yellow needles and massive brown crystals (right) - have the same composition and structure. The image also contains copper sulfate fedotovite K2Cu3O(SO4)3 (fine green crystals), langbeinite K2Mg2(SO4)3 (light gray crystals on top of the image), and palmierite (K, Na)2Pb(SO4)2 (light pseudohexagonal tabular crystals). Image size is 350 microns along the long side.