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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.
Additional recommended knowledge
It was first described in 1828 at Mt. Baldo, Trento Province, Italy. It is found in basaltic rocks associated with various zeolites, prehnite, calcite, datolite, sugilite, fluorite, and serpentine. It is found in a wide variety of worldwide locations.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pectolite". A list of authors is available in Wikipedia.|