Kianit
Kianit (Yun. ruapos-to’q ko’k, havorang), D i Sten — kristalli sla- neslarga mansub mineral. Kimyoviy tar- kibi Al2[SiO4]. Triklin singoniyali, kri-stali ustunsimon yoki taxtasimon. Aralashmalari Fe (1% gacha), Sg (1,2%), … Batafsil
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