New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. V. Katiarsite, KTiO(AsO4)

Scientists have discovered katiarsite, a new mineral with the chemical formula KTiO(AsO4), in sublimates from the Arsenatnaya fumarole at Tolbachik volcano, Kamchatka. This orthorhombic mineral, characterized by its sword-like crystal forms and optical properties, is associated with other arsenate minerals like hatertite and bradaczekite. Katiarsite exhibits a unique structure akin to synthetic KTA, a known non-linear optical material, suggesting potential applications in optics. The study employed electron-microprobe analysis, X-ray diffraction, and Raman spectroscopy to elucidate its composition, crystal structure, and physical properties. The mineral's name reflects its chemical makeup, combining potassium (kalium), titanium, and arsenate.

Pekov, I. V., Yapaskurt, V. O., Britvin, S. N., Zubkova, N. V., Vigasina, M. F., & Sidorov, E. G. (2016). New arsenate minerals from the Arsenatnaya fumarole, Tolbachik volcano, Kamchatka, Russia. V. Katiarsite, KTiO(AsO₄). Mineralogical Magazine, 80(4), 639–646. https://doi.org/10.1180/minmag.2016.080.007