An electron micrograph of volcanic sublimates (minerals) in natural colors. Pentavalent arsenic sulfide As2S5, an unnamed X-rays amorphous mineral, fumarolic incrustations, Mutnovsky volcano, Kamchatka. The intricate forms of "ice cream cones" formed as a result of growth of the mineral from droplets of water, which gradually increased in diameter. Colorless transparent hexagonal crystals have a composition NH4As4O6I, which is an unnamed mineral, iodine analogue for lucabindiite (K,NH4)As4O6(Cl,Br). Image size is 700 microns along the long side.