Latiumite (sulphatic potassium-calcium-aluminium silicate), a new mineral from Albano, Latium, Italy

Abstract

The ejected blocks found in the 'peperino' of the Alban Hills have long attracted the attention of mineralogists on account of their variety in content of well-crystallized minerals. It may be recalled that this Roman region provides the earliest and finest examples of the white octahedral haiiyne, at first referred to a separate species (berzeline), and that this mineral with leueite, yellow garnet, wollastonite, green clino-pyroxene, and melilite form characteristic assemblages in the tufts from Albano, Frascati, and other places.