Larimar is a type of pectolite or a rock composed largely of pectolite, an acid silicate hydrate of calcium and sodium. Pectolite is found in many locations, but larimar has a unique volcanic blue coloration, which is the result of copper substitution for calcium. They have been reported to contain beryl, feldspar, spodumene, mica, columbite-tantalite, and uranium minerals
Category: Inosilicate mineral
Color: Blue, blue-green, purple
Crystal habit: Tabular to acicular
Crystal class: Pinacoidal (1);