llisestiliite
Llisestiliite is a rare lithium-titanium silicate mineral described in the mineralogical literature as forming in high-grade metamorphic rocks and pegmatitic pockets. The idealized chemical formula is given as Li2TiSiO5, with minor substitutions such as Al for Si and Fe for Ti in natural samples. The mineral is typically found as small, euhedral crystals embedded in silicate-rich hosts.
Crystallography and structure are reported to place llisestiliite in the monoclinic system. The crystal framework comprises
Physical properties of llisestiliite include a vitreous luster, a color range from pale yellow to green, and
Occurrence and formation are linked to metamorphic differentiation of granitoid rocks and the late-stage crystallization processes
Etymology and naming reflect the fictional Llisse region and the customary suffix -lite used for mineral species.