Tags: Chemical Substance, Mineral.
Pectolite is a white to gray mineral NaCa2Si3O8(OH) sodium calcium inosilicate hydroxide. It crystallizes in the triclinic system typically occurring in radiated or fibrous crystalline masses. It has a Mohs hardness of 4.5 to 5 and a specific gravity of 2.7 to 2.9. The gemstone variety larimar is a pale to sky blue.
