Natrolit

Natrolit (az natriy va yun. lit-hos — sang), mineral az gurukhi seo­litov. Tarkibi khimiyaviash Na₂[Al₂ Si₃Oi₀] • 2N₂0. Dar sistemahoi rombi va tetragonali kristall mebandad. Kristallhoyash qalamchayu suzanshakl. Aksar chun agregathoi radialiyu shuoi, zichi sferoliti va massai nakhdor duchor meshavad. Odatan berang yo safedi zardtob, sabztob va surkhtob ast. Jiloyash shishagun. Sakhtiash 5—5,5; zichiash 2000—2500 kg/m³. Natriy gayr az ob NH₃, S0₂, HgS va digar moddahoro jabbidan, inchunin qobiliyati yak asosro ba asosi digar ivaz kardan niz dorad. In khususiyathoi onro dar sanoat, asosan baroi tayyor namudani permutitho (moddaest, ki ba vositai on obro narm mekunand) kharjoniba istifoda meba­rand. Natriy  dar kovokiyu tarqishhoi jinshoi vulqoni bo rohi tahshinshavi az mahlulhoi obi garm va tagyiryobii nefelinho, inchunin dar zonahoi farsoishi sienithoi nefe­lindor ba vujud meoyad. Konhoi Natriy dar Ural, Kavkaz, Ukraina, Sibiri Sharqy va digar joyho yoft shuda- and.