eskalaatorite

Eskalaatorite is a rare aluminosilicate mineral that was first identified in the Eskala region and named after the locality. It is described as having a layered silicate framework in which aluminum and silicon occupy tetrahedral sites, with a variable composition that includes light alkali and alkaline-earth cations. The mineral’s exact chemical formula varies with sample, reflecting subtle substitutions among Na, K, Ca, and Fe along with the silicate framework.

Crystallography and physical properties support its classification as a monoclinic mineral, typically forming tabular to prismatic crystals. Eskalaatorite exhibits a vitreous to resinous luster, with a pale blue to green color and a white streak. Mohs hardness is about 6.0 to 6.5, and the specific gravity ranges from roughly 2.9 to 3.1. The mineral shows perfect cleavage on the (001) plane, consistent with its layered structure, and is generally transparent to translucent.

Occurrence and geology: Eskalaatorite has so far been reported from a single deposit in the Eskala Province, within high-pressure metamorphic rocks affected by metasomatic alteration. It commonly occurs with serpentine, chlorite, quartz, and magnetite, and is thought to form during late-stage metasomatic reactions that modify pre-existing mineral assemblages.

Discovery and naming: The mineral was described in 2018 by researchers from the University of Nova Petra, in collaboration with regional partners. The name derives from the Eskala region, appended with the standard mineral suffix -ite.

Applications and research: Laboratory tests indicate Eskalaatorite displays modest dielectric and piezoelectric responses, suggesting potential uses in electronics and sensors. It is not yet mined commercially, and current research focuses on refining its structural model and assessing stability under surface conditions.

Safety: No known toxicity or radioactivity is associated with Eskalaatorite; standard mineral-handling precautions are sufficient.