Mineral Factbook

Larimar

Varietyof Pectolite

Larimar is blue pectolite found in the Dominican Republic. As a variety of Pectolite, it shares that species' composition (NaCa2Si3O8(OH)), crystal structure, and hardness; the distinction is the appearance defined above.

Photos

Larimar specimen photo
Parent Géry · Public domain · Commons
Larimar specimen photo
Parent Géry · Public domain · Commons
Larimar specimen photo
Parent Géry · CC BY-SA 3.0 · Commons
Larimar specimen photo
Parent Géry · CC BY-SA 3.0 · Commons

About Pectolite

Full reference data — crystallography, X-ray diffraction, and cited physical properties — is on the Pectolite species page.

FormulaNaCa2Si3O8(OH)
Hardness (Mohs)5
Specific gravity2.68-2.78
Density (calculated)3.086
Crystal systemtriclinic
Color rangegray
Lustersilky, vitreous