Kolumbit \u2014 murakkab oksidlar (tantaloniobitlar guruhi) kichik sin- figa mansub mineral. (Fe, Mn) Nb2O6 (kolumbit) \u2014 (Fe, Mn) Ta2O6 (tantalit) izomorf aralashmalar hosil qiladi. RZE, U, Ti, W, Th va b. aralashmalari ham mavjud. Romb singoniyali. Yarim metall- Simon yaltiroq. Qora, qo’ng’ir-qora kristallardan iborat. Qattiqligi 6; zichligi 5,22 g\/ sm3. Niobiy olish uchun muhim xom ashyo hisoblanadi. Sochilmalar va granitlar- ning nurash po’stidan olinadi. Norve- giya, Shvesiya, Frantsiya, Sharqiy Sibir va Qozog’istonda K. konlari bor. Kolumbiya \u2014 shim. Amerika- dagi Daryo. Kanada va AQShning g’arbiy qismida. O’z. 2250 km, havzasining mayd. 670 ming km2. Kryali tog’lardan bosh- lanib, tinch okeanga estuariy hosil qilib quyiladi. Irmoqlari: Sneyk, Klark-Fort va b. Kor va mo’zliklardan to’yinadi. O’rtacha suv sarfi quyilish joyida 8470 m3\/sek. O’rta va quyi oqimida yirik to’g’onlar, suv omborlari, GESlar qurilgan. Quyilish joyidan 450 km masofada kema katnaydi. Sugorish va suv ta’minotida, yog’och oqizishda foyda- laniladi. Yuqori qismi (Kanada hududi) da milliy parklar tashkil etilgan, tu- rizm rivojlangan. Yirik porti \u2014 Port- Lend. Daryo unga dastlab 1792 y.da kirib borgan Amerika kemasi “Kolumbiya” nomi b-n atalgan.<\/p>\n","protected":false},"excerpt":{"rendered":"
Kolumbit \u2014 murakkab oksidlar (tantaloniobitlar guruhi) kichik sin- figa mansub mineral. (Fe, Mn) Nb2O6 (kolumbit) \u2014 (Fe, Mn) Ta2O6 (tantalit) izomorf aralashmalar hosil qiladi. RZE, U, Ti, W, Th va … 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":[201],"tags":[],"class_list":["post-129439","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-k-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\/129439","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=129439"}],"version-history":[{"count":1,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/129439\/revisions"}],"predecessor-version":[{"id":129440,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/posts\/129439\/revisions\/129440"}],"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=129439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/categories?post=129439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/milliycha.uz\/kr\/wp-json\/wp\/v2\/tags?post=129439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}