Ortoklaz

Ortoklaz (az yunoni orthds — rost va klasis — shikastashavi), minerali jinsofarin az guruhi shpahoi dashti. Tarkibi khimiyaviash K [AlSisO*]. Dar tarkibash omekhtahoi Na (to 8% NajO), bazan Va va ba miqdori kam Fe, Sa, Rb, Cs va gayra dorad. Sistemai kristallbandiash monoklini; kristallhoyash prizmashakl.

Rangash gulobii ravshan, zardi burtob, bazan surkh; jiloyash shishagun. Sakhtiash 6— 6,5; zichiash 2550—2580 kilogramm/metr³. Ortoklaz yake az asositarin mineralhoi tarkibii jinshoi magmavi ast; tudai kristallhoi kaloni on dar raghoi pegmatiti vomekhurad. Aksar dar prosessi metamorfizmi regionali va kontakti ba vujud meoyad. Ortoklazro hamchun ash­yoi khom dar sanoati shisha va safolot istifoda mebarand.