出典:Wiktionary
pectolite (複数形 pectolites)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/14 18:42 UTC 版)
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.