Oxo-magnesio-hastingsite, NaCa 2 (Mg 2 Fe 3 3 + )(Al 2 Si 6 )O 22 O 2 , a new anhydrous amphibole from the Deeti volcanic cone, Gregory rift, northern Tanzania Available to Purchase

The sulfite anion in ettringite-group minerals: a new mineral species hielscherite, Ca 3 Si(OH) 6 (SO 4 )(SO 3 )·11H 2 O, and the thaumasite–hielscherite solid-solution series Available to Purchase

Fluorine-, yttrium- and lanthanide-rich cerianite-(Ce) from carbonatitic rocks of the Kerimasi volcano and surrounding explosion craters, Gregory Rift, northern Tanzania Available to Purchase

Kerimasite, Ca 3 Zr 2 ( \batchmode \documentclass[fleqn,10pt,legalpaper]{article} \usepackage{amssymb} \usepackage{amsfonts} \usepackage{amsmath} \pagestyle{empty} \begin{document} \(\mathrm{Fe}_{2}^{3+}\) \end{document} Si)O 12 , a new garnet from carbonatites of Kerimasi volcano and surrounding explosion craters, northern Tanzania Available to Purchase

Alumoåkermanite, (Ca,Na) 2 (Al,Mg,Fe 2+ )(Si 2 O 7 ), a new mineral from the active carbonatite-nephelinite-phonolite volcano Oldoinyo Lengai, northern Tanzania Available to Purchase

Alumoåkermanite, (Ca,Na) 2 (Al,Mg,Fe 2+ )(Si 2 O 7 ), a new mineral from the active carbonatite-nephelinite-phonolite volcano Oldoinyo Lengai, northern Tanzania Available to Purchase