karaisonet

Karaisonet is a mineral species in the sheet-silicate family. It is described as a potassium-rich aluminum silicate with a layered framework of tetrahedral and octahedral sheets, enabling a micaceous habit. The composition is dominated by potassium, aluminum, and silicon, with minor iron, magnesium, and trace elements; substitutions by calcium or sodium have been noted in some samples. Crystals are pale green to brown with a vitreous to pearly luster. It typically shows perfect basal cleavage and Mohs hardness around 3–4; measured densities are about 2.9–3.1 g/cm3.

Karaisonet has been reported in metamorphic rocks and hydrothermal veins with pegmatitic potassium enrichment; the type locality is the Karaison region, after which the mineral is named. The first description appeared in the late 20th century, and later work has refined its crystal structure and chemistry.

Taxonomically, karaisonet is placed among aluminosilicates related to mica-like minerals. The name derives from the Karaison locality; the -et suffix is common among mineral names.

In materials science, karaisonet has been studied for ion intercalation and potential use in ceramics or energy storage. Because it is relatively rare and not widely characterized, practical applications are primarily at the research stage, and its geological distribution remains under active study.