Plagioklazlar (Yun. plagios \u2014 kiyshik va klasis \u2014 sinish, yorilish) \u2014 karkasli alyumosilikatlar \u2014 dala shpap- glari guruhiga mansub keng tarqalgan jins hosil qiluvchi minerallar. Kimyo- viy tarkibi bo’yicha uzluksiz izomorf qatordan iborat (q. Izomorfizm) (100-n) Na[AlSi3O8] nCa[Al2Si2O8] (bunda p 0 dan 100 gacha o’zgarishi mumkin); ba’zan BaO, SrO, FeO, G’e2O3 va b. aralashgan bo’ladi. Magmatik jinslar sistemati- kasida P.ning tarkibi muhim ahamiyatga ega. P. katorining chek-ka a’zolari al- bit va anortitnchnt 0% dan 100% gacha har xil mutanosiblikda qo’shilishidan 100 xil P. hosil bo’lishi mumkin. P. triklin sistemada kristallanadi, tur- li kattalikdagi prizma yoki plastinka shaklidagi qo’shaloq kristallar va dona- chalar hosil qiladi. Sodda qo’shaloklari kam, murakkab polisintetik qo’shaloq kri-stallari keng tarqalgan. Rangi oq, kul-rang, ko’kimtir, qizg’ish. Shishadek yaltiroq, qattiqligi 6-6,5, zichligi 2620 (albit)dan 2750 (anortit) kg\/m3 gacha. P.ning asosiy massasi magmaning kri- stallanishidan hosil bo’ladi; ular, shu- ningdek, kontakt-metamorfik hosilalar (skarnlar, rogovik va b.)da, yana gidroter- mal tomirlar (albit)da uchraydi. Nurash jarayonida P. osonlik b-n gidroslyuda- lar, gilli minerallar va b.ga aylana- Di. P.ning ba’zan optik EF-fektlariga qarab ko’kimtir tovlanuvchi hidli oy- tosh, tarkibida temir yal-tirog’ining mayda tangachalari bo’lganligidan oltin- dek tovlanib turadigan xili avantyurin, yashil va ko’k tovlanadigan xili Labrador deb ataladi. Ko’kim-tir, chiroyli tovla- nib turadigan xili bezak tosh sifatida ishlatiladi.<\/p>\n","protected":false},"excerpt":{"rendered":"
Plagioklazlar (Yun. plagios \u2014 kiyshik va klasis \u2014 sinish, yorilish) \u2014 karkasli alyumosilikatlar \u2014 dala shpap- glari guruhiga mansub keng tarqalgan jins hosil qiluvchi minerallar. Kimyo- viy tarkibi bo’yicha uzluksiz … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":99837,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[226],"tags":[],"class_list":["post-119266","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-p-harfi","entry"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"kr","enabled_languages":["uz","kr","ru"],"languages":{"uz":{"title":true,"content":true,"excerpt":false},"kr":{"title":false,"content":false,"excerpt":false},"ru":{"title":false,"content":false,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/119266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/comments?post=119266"}],"version-history":[{"count":1,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/119266\/revisions"}],"predecessor-version":[{"id":119281,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/119266\/revisions\/119281"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/media\/99837"}],"wp:attachment":[{"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/media?parent=119266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/categories?post=119266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/tags?post=119266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}