{"id":5147,"date":"2026-09-20T03:13:53","date_gmt":"2026-09-20T03:13:53","guid":{"rendered":"https:\/\/crystals.rocks\/"},"modified":"2026-09-20T05:52:48","modified_gmt":"2026-09-20T05:52:48","slug":"krotite","status":"publish","type":"post","link":"https:\/\/crystals.rocks\/tr\/article\/krotite\/","title":{"rendered":"Krotite"},"content":{"rendered":"<p>Krotit, ideal kimyasal form\u00fcl\u00fcyle do\u011fada olu\u015fan bir kalsiyum-al\u00fcminyum oksit mineraledir <strong>CaAl\u2082O\u2084<\/strong>. Oksit mineral olarak s\u0131n\u0131fland\u0131r\u0131l\u0131r ve temel olarak, ilkel karbonlu chondritlerdeki kalsiyum-al\u00fcminyum zengin inkl\u00fczyonlar\u0131ndan bilinir. Krotit, \u00e7o\u011fu yayg\u0131n yerk\u00fcre mineralesinden farkl\u0131 olarak genellikle b\u00fcy\u00fck, ayr\u0131 kristaller de\u011fil, meteoritler i\u00e7inde g\u00f6m\u00fcl\u00fc mikroskobik taneler halinde bulunur.<\/p>\n<p>\u0130deal form\u00fcl, bir kalsiyum atomu, iki al\u00fcminyum atomu ve d\u00f6rt oksijen atomu i\u00e7erir. Teorik bile\u015fimi yakla\u015f\u0131k olarak ,4 a\u011f\u0131rl\u0131k\u00e7a kalsiyum, ,1 a\u011f\u0131rl\u0131k\u00e7a al\u00fcminyum ve ,5 a\u011f\u0131rl\u0131k\u00e7a oksijendir. Oksitler cinsinden ifade edildi\u011finde, bile\u015fim yakla\u015f\u0131k olarak ,5 a\u011f\u0131rl\u0131k\u00e7a CaO ve ,5 a\u011f\u0131rl\u0131k\u00e7a Al\u2082O\u2083'e kar\u015f\u0131l\u0131k gelir. Do\u011fal taneler k\u00fc\u00e7\u00fck kimyasal sapmalar i\u00e7erebilir, ancak mineral, hem CaAl\u2082O\u2084 bile\u015fimi hem de karakteristik kristal yap\u0131s\u0131yla tan\u0131mlan\u0131r.<\/p>\n<figure id=\"attachment_5085\" aria-describedby=\"caption-attachment-5085\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-medium wp-image-5085\" src=\"https:\/\/crystals.rocks\/wp-content\/uploads\/2026\/09\/krotite-300x215.png\" alt=\"krotite\" width=\"300\" height=\"215\" srcset=\"\" sizes=\"(max-width: 300px) 100vw, 300px\" data-srcset=\"\" \/><figcaption id=\"caption-attachment-5085\" class=\"wp-caption-text\">krotite<\/figcaption><\/figure>\n<p>Krotit, CaAl\u2082O\u2084'\u00fcn d\u00fc\u015f\u00fck bas\u0131n\u00e7l\u0131 dimorfudur. Y\u00fcksek bas\u0131n\u00e7l\u0131 dimorf ise dmitryivanovit olarak adland\u0131r\u0131l\u0131r. Bu iki minera ayn\u0131 ideal kimyasal form\u00fcle sahip ancak farkl\u0131 atom d\u00fczenlerine sahip oldu\u011fu i\u00e7in yaln\u0131zca kimyasal bile\u015fimine g\u00f6re de\u011fil kristalografi y\u00f6ntemleriyle ayr\u0131lmalar\u0131 gerekir. Krotit, dayan\u0131kl\u0131 seramikler ve kalsiyum aluminat har\u00e7lar\u0131nda kullan\u0131lan sentetik kalsiyum aluminat bile\u015fiklerine yap\u0131sal olarak ili\u015fkilidir, ancak end\u00fcstriyel kalsiyum aluminatlar otomatik olarak Krotit minerali olarak s\u0131n\u0131fland\u0131r\u0131lmaz.<\/p>\n<h2>Tarih ve Krotit'in Ke\u015ffi<\/h2>\n<p>Krotit, 2011 y\u0131l\u0131nda yeni bir mineral olarak resmen tan\u0131mlanm\u0131\u015ft\u0131r. Tip materyal, Kuzeybat\u0131 Afrika'da bulunan NWA 1934 meteoriti, CV3 karbonlu konsdrili bir meteoritten gelmektedir. Mineral, genellikle CAI olarak k\u0131salt\u0131lan kalsiyum-al\u00fcminyum zengin inkl\u00fczyonlar i\u00e7inde yer al\u0131r. Bu inkl\u00fczyonlar, ilkel konsdrit meteoritlerinde korunmu\u015f en diren\u00e7li bile\u015fenlerden baz\u0131lar\u0131d\u0131r.<\/p>\n<p>Mineral, chondritik mete\u00f6ritler, refraktif inkl\u00fczyonlar, kondensasyon s\u00fcre\u00e7leri ve G\u00fcne\u015f Sisteminin erken kimyasal evrimi \u00fczerindeki ara\u015ft\u0131rmalar\u0131yla tan\u0131nan kosmo\u00e7emi\u011fe adanm\u0131\u015ft\u0131r. Mineral, IMA 2010-038 numaras\u0131 alt\u0131nda Uluslararas\u0131 Mineroloji Birli\u011fi taraf\u0131ndan onaylanm\u0131\u015ft\u0131r.<\/p>\n<p>Orijinal tan\u0131mlama, kimyasal analiz, elektron mikroskobu, kristalografi ve petrografik g\u00f6zlemlere dayan\u0131yordu. Bu kombinasyon, Krotit tanelerinin k\u00fc\u00e7\u00fck olmas\u0131 ve kalsiyum-al\u00fcminyum oksitler, silikatlar ve di\u011fer diren\u00e7li fazlar\u0131n karma\u015f\u0131k bir birle\u015fiminde bulunmas\u0131 nedeniyle gerekliydi. CaAl\u2082O\u2084'e yak\u0131n bir kimyasal analiz, birka\u00e7 ilgili mineraL\u0131n benzer element oranlar\u0131na sahip olmas\u0131ndan veya ayn\u0131 meteorit dahilinde bulunabilmesinden dolay\u0131 kendi ba\u015f\u0131na yeterli olmayacakt\u0131.<\/p>\n<h2>Krotit'in Olu\u015fumu ve Jeolojik Bulunma Yeri<\/h2>\n<p>Y\u00fcksek s\u0131cakl\u0131k ve d\u00fc\u015f\u00fck bas\u0131n\u00e7 ko\u015fullar\u0131nda, g\u00fc\u00e7l\u00fc \u0131slah edici kimyasal bir ortamda Krotitler olu\u015fur. NWA 1934'deki Krotit i\u00e7eri\u011fi, erken G\u00fcne\u015f nebulas\u0131ndaki s\u0131cak gazdan kondensasyon veya kristalle\u015fmenin \u00fcr\u00fcn\u00fc olarak yorumlanmaktad\u0131r. Faz denge\u8003\u8651lar\u0131, yakla\u015f\u0131k 1.500 \u00b0C veya daha y\u00fcksek s\u0131cakl\u0131klarda d\u00fc\u015f\u00fck bas\u0131n\u00e7 ko\u015fullar\u0131nda olu\u015fumunu g\u00f6stermektedir. Bu ko\u015fullar, bir\u00e7ok daha u\u00e7ucu element ve mineraLIN kondensasyonundan \u00f6nce refrakt\u00f6r kat\u0131lar\u0131n olu\u015fumuyla tutarl\u0131d\u0131r.<\/p>\n<p>Kalsiyum ve al\u00fcminyum, g\u00fcne\u015f bulutundaki en az u\u00e7ucu ana elementlerden biridir. S\u0131cak nebuloz gaz so\u011fudu\u011funda, bu elementler oksijenle birle\u015ferek dayan\u0131kl\u0131 oksitler ve kalsiyum-al\u00fcminyum silikatlar\u0131 olu\u015fturabilir. Bu nedenle krotit, meteoritin ebeveyn asteroidinin kurulmas\u0131ndan \u00f6nce meydana gelen mineral olu\u015fumunun y\u00fcksek s\u0131cakl\u0131k a\u015famas\u0131n\u0131 kaydeder. Olu\u015fumu, s\u0131radan yerel magmatik, hidrotermal veya metamorfik s\u00fcre\u00e7lerle kar\u0131\u015ft\u0131r\u0131lmamal\u0131d\u0131r.<\/p>\n<p>NWA 1934'te, Krotit, al\u0131\u015f\u0131lmad\u0131k kalsiyum-al\u00fcminyum zengin inkl\u00fczyonun merkezi ve mantosunda toplanm\u0131\u015ft\u0131r. Perovskit, gehlenit, her\u00e7init, mayenit, grossit, hibonit, spinel ve diopsid ile birlikte bulunur. \u0130z seviyesinde heksamolibden de bildirilmi\u015ftir. Mineral toplulu\u011fu, bu inkl\u00fczyonun tek basama\u011f\u0131 basit bir reaksiyonla olu\u015fmak yerine birka\u00e7 kondensasyon, kristalle\u015fme, reaksiyon ve muhtemelen k\u0131smi erime a\u015famas\u0131n\u0131 ge\u00e7irdi\u011fini g\u00f6stermektedir.<\/p>\n<p>Dahili k\u0131sm\u0131n d\u0131\u015f k\u0131sm\u0131, k\u0131r\u0131k kabuk veya \"k\u0131r\u0131k yumurta\" g\u00f6r\u00fcn\u00fcm\u00fc olarak tan\u0131mlanm\u0131\u015ft\u0131r. Baz\u0131 \u00e7atlaklar demir ve al\u00fcminyum hidroksitlerle doludur. Bu hidratl\u0131 mineraller, meteoritin D\u00fcnya'ya ula\u015fmas\u0131ndan sonra meydana gelen yerel hava ko\u015fullar\u0131n\u0131n \u00fcr\u00fcnleridir. Bu mineraller, g\u00fcne\u015f sistemi nebulas\u0131n\u0131n ilk ortam\u0131nda olu\u015fan primer \u00fcr\u00fcnler olarak kabul edilmezler. Bu ayr\u0131m \u00f6nemlidir \u00e7\u00fcnk\u00fc hava ko\u015fullar\u0131, orijinal Krotit tanelerinin s\u0131n\u0131rlar\u0131n\u0131 ve y\u00fczeylerini de\u011fi\u015ftirebilir.<\/p>\n<h2>Krotit'in Kristal Yap\u0131s\u0131<\/h2>\n<p>Krotit monoklinik kristal sisteminde kristalle\u015fir. Bildirilen uzay grubu http:\/\/www.chem.gsu.edu\/~gurk\/2013\/2013-04-15-17-18-39.png <strong>P2\u2081\/n<\/strong>, uzay grubu say\u0131s\u0131 14. Tip materyal i\u00e7in belirlenen birim h\u00fccre parametreleri yakla\u015f\u0131k olarak <strong>a = 8,6996(3) \u00c5<\/strong>, <strong>b = 8,0994(3) \u00c5<\/strong>, <strong>c = 15,217(1) \u00c5<\/strong>, ve <strong>\u03b2 = 90,188(6)\u00b0<\/strong>. Birim h\u00fccre on iki form\u00fcl birimi i\u00e7erir, ifade edilmi\u015ftir <strong>Z = 12<\/strong>ve yakla\u015f\u0131k 1.071 \u00c5\u00b3 hacimli hesaplanm\u0131\u015ft\u0131r.<\/p>\n<p>Yap\u0131s\u0131 genel olarak al\u00fcminyum\u2013oksijen polihedralar\u0131 taraf\u0131ndan domine edilen bir \u00e7er\u00e7evedir, \u00f6zellikle AlO\u2084 d\u00f6rty\u00fczl\u00fcleri, kalsiyum ise \u00e7er\u00e7evenin daha b\u00fcy\u00fck yap\u0131sal b\u00f6lgelerinde yer al\u0131r. D\u00fczen, kimyasal form\u00fcl\u00fcn iki trivalent kationa kar\u015f\u0131 bir divalent kation ve d\u00f6rt oksijen atomu olan genel stoikometrik ili\u015fkiye sahip olmas\u0131na ra\u011fmen, spinel yap\u0131s\u0131na e\u015fde\u011fer de\u011fildir.<\/p>\n<p>Krotit ve dmitryivanovit aras\u0131ndaki fark yap\u0131sal olup, bile\u015fimsel de\u011fildir. Her iki faz\u0131n form\u00fcl\u00fc CaAl\u2082O\u2084'd\u00fcr, ancak farkl\u0131 bas\u0131n\u00e7 ko\u015fullar\u0131nda stabildir ve atomlar\u0131n\u0131n dizili\u015fi farkl\u0131d\u0131r. Krotit d\u00fc\u015f\u00fck bas\u0131n\u00e7l\u0131 formu temsil ederken, dmitryivanovit daha y\u00fcksek bas\u0131n\u00e7 ko\u015fullar\u0131yla ili\u015fkilidir.<\/p>\n<p>Do\u011fal Krotit, di\u011fer mineraller taraf\u0131ndan \u00e7evrelenmi\u015f k\u00fc\u00e7\u00fck taneler halinde bulunur, bu nedenle geli\u015fmi\u015f d\u0131\u015f kristal y\u00fczeyleri yayg\u0131nd\u0131r. Bu nedenle yap\u0131sal bilgiler genellikle X-\u0131\u015f\u0131n\u0131 k\u0131r\u0131n\u0131m\u0131, elektron k\u0131r\u0131n\u0131m\u0131 veya elektron geri sa\u00e7\u0131lma k\u0131r\u0131n\u0131m\u0131 ile elde edilir. Bu y\u00f6ntemler, tanelerin geleneksel tek kristal analizi i\u00e7in \u00e7ok k\u00fc\u00e7\u00fck oldu\u011fu durumlarda \u00f6zellikle yararl\u0131d\u0131r.<\/p>\n<h2>Krotit'in Fiziksel ve Kimyasal \u00d6zellikleri<\/h2>\n<p>Krotit, normalde parlak kesitlerde veya ince kesitlerde mikroskopik taneler olarak g\u00f6zlemlenir. Renk ve parlakl\u0131k tan\u0131mlamalar\u0131, kimyasal bile\u015fimi ve kristal yap\u0131s\u0131 kadar tan\u0131d\u0131k olmayabilir, \u00e7\u00fcnk\u00fc g\u00f6r\u00fcn\u00fc\u015f tane kal\u0131nl\u0131\u011f\u0131na, y\u00f6nelimine, \u00e7evreleyen mineraller ve de\u011fi\u015fime ba\u011fl\u0131d\u0131r. Do\u011fal malzeme, iletilen veya yans\u0131t\u0131lan \u0131\u015f\u0131k alt\u0131nda renksizden a\u00e7\u0131k kahverengiye kadar g\u00f6r\u00fcnebilirken, karma\u015f\u0131k inkl\u00fczyonlarda bireysel tanelerin s\u0131n\u0131rlar\u0131 zor ay\u0131rt edilebilir.<\/p>\n<p>Rapor edilen Mohs sertli\u011fi yakla\u015f\u0131k 6.5'tir ve hesaplanan yo\u011funluk yakla\u015f\u0131k 2,94 g\/cm\u00b3't\u00fcr. Yo\u011funlu\u011fun do\u011frudan \u00f6l\u00e7\u00fclmesi zordur \u00e7\u00fcnk\u00fc taneler \u00e7ok k\u00fc\u00e7\u00fckt\u00fcr ve genellikle di\u011fer fazlarla birlikte b\u00fcy\u00fcr. Ayn\u0131 nedenle, tek tanelerde k\u0131r\u0131lma ve \u00e7atlaklar\u0131n de\u011ferlendirilmesi de g\u00fcvenilir \u015fekilde yap\u0131lamamaktad\u0131r.<\/p>\n<p>Ideal kimyasal bile\u015fimi CaAl\u2082O\u2084 t\u00fcr. Elektron mikro-probe analizleri, oksijen ve analitik belirsizlikler dikkate al\u0131nd\u0131ktan sonra genellikle kalsiyum-al\u00fcminyum oran\u0131 yakla\u015f\u0131k 1:2 olmal\u0131d\u0131r. Az miktarda magnezyum, silikon, titanium, demir, sodyum veya di\u011fer elementler, iz seviyesinde bulunabilir veya kom\u015fu minerallerden kontaminasyonla girilebilir. Bu k\u00fc\u00e7\u00fck bile\u015fenler, Krotit'in ayr\u0131 bir t\u00fcr\u00fcn\u00fc tan\u0131mlamaz.<\/p>\n<p>Krotit, sadece belirli bir bas\u0131n\u00e7-s\u0131cakl\u0131k-bile\u015fim alan\u0131nda kararl\u0131d\u0131r. Daha y\u00fcksek bas\u0131n\u00e7larda, CaAl\u2082O\u2084 dmitryivanovit yap\u0131s\u0131n\u0131 alabilir. Farkl\u0131 kimyasal ko\u015fullar alt\u0131nda kalsiyum ve al\u00fcminyum yerine grossit, hibonit, gehlenit, mayenit, perovskit ya da di\u011fer kalsiyum-al\u00fcminyum oksitleri ve silikatlar\u0131 olu\u015fturabilir.<\/p>\n<h2>Krotit T\u00fcrleri ve \u00c7e\u015fitleri<\/h2>\n<p>Krotit'in resm\u00ee olarak tan\u0131nm\u0131\u015f ta\u015f t\u00fcrleri veya ticari renk t\u00fcrleri yoktur. A\u015fa\u011f\u0131daki kategoriler, resmi minerolojik b\u00f6l\u00fcmler de\u011fil, tan\u0131mlay\u0131c\u0131d\u0131r:<\/p>\n<ul>\n<li><strong>Meteoritik Krotit:<\/strong> Do\u011fal Krotit, karbonlu konderitlerde kalsiyum-al\u00fcminyum zengin inkl\u00fczyonlar\u0131nda, NWA 1934'ten tip materyal dahil olmak \u00fczere meydana gelir.<\/li>\n<li><strong>D\u00fc\u015f\u00fck bas\u0131n\u00e7 CaAl\u2082O\u2084:<\/strong> Krotit, CaAl\u2082O\u2084'\u00fcn d\u00fc\u015f\u00fck bas\u0131n\u00e7l\u0131 yap\u0131sal formudur.<\/li>\n<li><strong>Y\u00fcksek bas\u0131n\u00e7l\u0131 CaAl\u2082O\u2084:<\/strong> Dmitryivanovite, CaAl\u2082O\u2084'\u00fcn y\u00fcksek bas\u0131n\u00e7l\u0131 dimorfudur. Bir krotit t\u00fcr\u00fc de\u011fil, ayr\u0131 bir mineraller t\u00fcr\u00fcd\u00fcr.<\/li>\n<li><strong>Sentezik kalsiyum al\u00fcminat:<\/strong> Laboratuvar \u00fcretimi CaAl\u2082O\u2084, kimyasal veya yap\u0131sal olarak Krotit'e benzer, ancak do\u011fal bir mineral olu\u015fumu de\u011fil, yapay bir malzemedir.<\/li>\n<\/ul>\n<p>Tane b\u00fcy\u00fckl\u00fc\u011f\u00fc, iz element i\u00e7eri\u011fi, de\u011fi\u015fime u\u011fram\u0131\u015fl\u0131k ve ili\u015fkili minerallerdeki farkl\u0131l\u0131klar, bireysel meteorit \u00f6rneklerinde farkl\u0131 g\u00f6r\u00fcn\u00fcmler olu\u015fturabilir. Bu farkl\u0131l\u0131klar tanelerin jeolojik tarihini tan\u0131mlar ve resmi olarak adland\u0131r\u0131lm\u0131\u015f varyantlar\u0131 temsil etmez.<\/p>\n<h2>Krotit Nerede Bulunur?<\/h2>\n<p>NWA 1934 CV3 karbonatl\u0131 konsdrity'deki kalsiyum-al\u00fcminyum zengin i\u00e7eri\u011findeki Krotit'in en iyi belgelenmi\u015f do\u011fal olu\u015fumu. Meteorit Kuzeybat\u0131 Afrika'da bulunmu\u015ftur, ancak Krotit kendisi G\u00fcne\u015f Sistem'i'nde \u00e7ok daha erken bir zamanda, muhtemelen g\u00fcne\u015f bulutunun y\u00fcksek s\u0131cakl\u0131k b\u00f6lgesinde olu\u015fmu\u015ftur.<\/p>\n<p>Meteorit i\u00e7inde, Krotit, dayan\u0131kl\u0131 inkl\u00fczyonun merkezi ve kabuk k\u0131s\u0131mlar\u0131nda \u00e7o\u011funlukla bulunur. Perovskit, gehlenit, hercinit, mayenit, grossit, hibonit, spinel ve diopsid gibi minerallerle ili\u015fkilidir. Bu mineraller, kalsiyum, al\u00fcminyum, titanium, magnezyum, silikon ve oksijen i\u00e7eren y\u00fcksek s\u0131cakl\u0131k kondensasyonu ve kristallenme s\u00fcre\u00e7lerine dair kan\u0131t sunar.<\/p>\n<p>Krotit, meteoritinin bulundu\u011fu yerde olu\u015fan bir karasal minera ile kar\u0131\u015ft\u0131r\u0131lmamal\u0131d\u0131r. Meteoritin karasal konumu, dahiliyenin d\u0131\u015f k\u0131s\u0131mlar\u0131n\u0131 hidrasyon ve oksidasyon etkiledi, ancak temel Krotit taneleri meteoritin ana vekilinin varolmas\u0131ndan \u00f6nce olu\u015fmu\u015ftur. Krotit ile ili\u015fkilendirilen yayg\u0131n olarak kabul edilen bir karasal jeolojik yer yoktur.<\/p>\n<h2>Krotit Nas\u0131l Tan\u0131n\u0131r<\/h2>\n<p>Krotit, normalde yard\u0131mc\u0131 g\u00f6rsel inceleme ile tan\u0131namaz. Taneler k\u00fc\u00e7\u00fck olup, di\u011fer dayan\u0131kl\u0131 fazlarla s\u0131k\u00e7a birle\u015fmi\u015f ve birka\u00e7 kalsiyum-al\u00fcminyum oksit ve silikatla benzebilir. Petrografik inceleme bu nedenle ilk ad\u0131md\u0131r, ard\u0131ndan kimyasal ve kristalografik analizler yap\u0131l\u0131r.<\/p>\n<p>\u0130nce kesit veya polisajl\u0131 kesit mikroskobu, tanelerin morfolojisi, temaslar\u0131, ku\u015faklanmalar\u0131, dahili yap\u0131lar\u0131 ve \u00e7evreleyen minerallerle olan ili\u015fkilerini ortaya \u00e7\u0131karabilir. Taray\u0131c\u0131 elektron mikroskobu i\u00e7indeki geri sa\u00e7\u0131l\u0131m elektron g\u00f6r\u00fcnt\u00fcleme, farkl\u0131 ortalama atomik say\u0131ya sahip fazlar\u0131n farkl\u0131 d\u00fczeylerde g\u00f6r\u00fcnt\u00fc kontrast\u0131 \u00fcretmesi nedeniyle faydal\u0131d\u0131r. Bu da nicel analiz \u00f6ncesi Krotit zengin b\u00f6lgelerin belirlenmesine olanak tan\u0131r.<\/p>\n<p>Elektron mikro-prob analizi, kalsiyum, al\u00fcminyum, oksijen\u00fcn stoikometrik hesaplamalarla konsantrasyonlar\u0131n\u0131 ve herhangi k\u00fc\u00e7\u00fck elementleri belirlemek i\u00e7in normalde kullan\u0131l\u0131r. Analizler, gehlenit, hibonit, grossit, mayenit veya di\u011fer kom\u015fu minerallerden kirlenmeye neden olabilece\u011finden, taneler aras\u0131 s\u0131n\u0131rlardan uzakta yap\u0131lmal\u0131d\u0131r.<\/p>\n<p>\u0130lgili fazlar aras\u0131ndaki ayr\u0131m \u00f6nemli oldu\u011funda kristalografik do\u011frulama gerekir. X \u0131\u015f\u0131n\u0131 k\u0131r\u0131n\u0131m\u0131, elektron k\u0131r\u0131n\u0131m\u0131 ve elektron geri sa\u00e7\u0131l\u0131m k\u0131r\u0131n\u0131m\u0131, monoklin yap\u0131 ve P2\u2081\/n uzay grubu ile uyumunu test etmek i\u00e7in kullan\u0131labilir. Tek bir enerji da\u011f\u0131l\u0131ml\u0131 X \u0131\u015f\u0131n\u0131 spektrumu genellikle yeterli de\u011fildir, \u00f6zellikle tane birka\u00e7 mikrometre boyutunda oldu\u011funda.<\/p>\n<p>Krotit'ten ayr\u0131lmalar\u0131 gereken \u00f6nemli mineraller, grossit, CaAl\u2084O\u2087; hibonit, CaAl\u2081\u2082O\u2081\u2089; ve gehlenit, Ca\u2082Al\u2082SiO\u2087'dir. Mayenit ayn\u0131 refrakter inkl\u00fczyonlarda da bulunabilir. Dmitryivanovit, Krotit ile ayn\u0131 ideal kimyasal form\u00fcle sahip olmas\u0131na ra\u011fmen farkl\u0131 kristal yap\u0131s\u0131 nedeniyle \u00f6zel dikkat gerektirir.<\/p>\n<h2>Krotit'in Uygulamalar\u0131 ve Kullan\u0131mlar\u0131<\/h2>\n<p>Do\u011fal Krotit, takviye ta\u015f\u0131, dekoratif malzeme, end\u00fcstriyel ham madde veya ayr\u0131 olarak \u00e7\u0131kar\u0131lan cevher olarak bir kullan\u0131m alan\u0131 bulmam\u0131\u015ft\u0131r. Taneleri \u00e7ok k\u00fc\u00e7\u00fck ve \u00e7ok seyrek oldu\u011fu i\u00e7in ticari \u00e7\u0131kartma i\u00e7in uygun de\u011fildir. Mineral genellikle meteorit kesitleri ve kalsiyum-al\u00fcminyum zengin inkl\u00fczyonlar\u0131 kapsam\u0131nda incelenir.<\/p>\n<p>Bunun ana \u00f6nemleri analitik ve kozmokimyasald\u0131r. Krotit i\u00e7eren inkl\u00fczyonlar, y\u00fcksek s\u0131cakl\u0131k kondensasyonu, kalsiyum-al\u00fcminyum mineral olu\u015fumu, nebularda gaz bile\u015fimi ve G\u00fcne\u015f Sistemi tarihindeki en erken d\u00f6nemlerde var olan bas\u0131n\u00e7-s\u0131cakl\u0131k ko\u015fullar\u0131 hakk\u0131nda bilgi sa\u011flar. Ayr\u0131ca, extraterrestriyel minerallerin deneysel olarak sentezlenmi\u015f kalsiyum aluminatlara kar\u015f\u0131 do\u011fal bir referans\u0131n\u0131 da sa\u011flar.<\/p>\n<p>Sentetik CaAl\u2082O\u2084 ve ilgili kalsiyum aluminatlar, dayan\u0131kl\u0131 seramiklerde, y\u00fcksek s\u0131cakl\u0131k ba\u011flay\u0131c\u0131lar\u0131nda ve kalsiyum aluminat har\u00e7lar\u0131nda kullan\u0131l\u0131r. Bu end\u00fcstriyel uygulamalar, kontrol edilmi\u015f bile\u015fimlere ve i\u015fleme tarihlerine sahip yapay malzemeleri kapsar. Do\u011fal Krotit'in do\u011frudan ticari uygulamalar\u0131 de\u011fildir.<\/p>\n<p>Krotit, ilk nebul\u00f6z \u00f6zelliklerin yan\u0131 s\u0131ra daha sonra olu\u015fan de\u011fi\u015fimleri ay\u0131rt etmede de yard\u0131mc\u0131 olabilir. Dayan\u0131kl\u0131 bir dahiliyette korunan bir tane, y\u00fcksek s\u0131cakl\u0131kta olu\u015fma kan\u0131t\u0131 saklayabilirken, kenarlar\u0131 hidrasyon, oksidasyon veya yerel hava ko\u015fullar\u0131 taraf\u0131ndan de\u011fi\u015ftirilmi\u015f olabilir. Mineralojik yorum bu nedenle meteoritin ilk kristal yap\u0131s\u0131n\u0131 ve daha sonraki tarihini dikkate almal\u0131d\u0131r.<\/p>\n<h2>\u0130lgili Mineraller ve Adland\u0131rma<\/h2>\n<p>Krotit, ilkel meteoritlerde bulunan dayan\u0131kl\u0131 kalsiyum-al\u00fcminyum minerallerinin daha geni\u015f bir toplulu\u011funa aittir. Bunlar hibonit, grossit, perovskit, spinel, gehlenit ve mayenit gibi mineralleri i\u00e7erir. Kimyasal oranlarda, yap\u0131 d\u00fczeninde, anyon i\u00e7eri\u011finde ve stabilite ko\u015fullar\u0131nda farkl\u0131l\u0131k g\u00f6sterirler.<\/p>\n<p>Krotit ismi, Krotit yap\u0131s\u0131na sahip do\u011fal d\u00fc\u015f\u00fck bas\u0131n\u00e7l\u0131 CaAl\u2082O\u2084 faz\u0131na \u00f6zel olarak uygulanmal\u0131d\u0131r. Ayn\u0131 nominal bile\u015fime sahip her kalsiyum al\u00fcminat i\u00e7in genel bir terim olarak kullan\u0131lmamal\u0131d\u0131r. \u00d6zellikle, dmitryivanovit, CaAl\u2082O\u2084'\u00fcn farkl\u0131 bir yap\u0131sal formunu temsil etti\u011fi i\u00e7in ayr\u0131 bir mineral t\u00fcr\u00fc olarak kabul edilmektedir.<\/p>\n<h2>Kaynaklar<\/h2>\n<p>Ma, C., Kampf, A. R., Connolly, H. C., vd. (2011). \"Krotit, CaAl\u2082O\u2084, NWA 1934 Meteoriti'nden Yeni Bir Y\u00fcksek Erime Noktas\u0131na Sahip Mineral.\" <em>Amerikan Minerolo\u011fu<\/em>, 96, 709\u2013715. <a href=\"https:\/\/doi.org\/10.2138\/am.2011.3693\">https:\/\/doi.org\/10.2138\/am.2011.3693<\/a><\/p>\n<p>Amerikan Jeoloji Toplulu\u011fu. \u201cKrotit.\u201d <em>Mineraloji El Kitab\u0131<\/em>. <a href=\"https:\/\/handbookofmineralogy.org\/pdfs\/Krotite.pdf\">PDF<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Krotite is a naturally occurring calcium\u2013aluminium oxide mineral with the ideal chemical formula CaAl\u2082O\u2084. It is classified as an oxide mineral and is primarily known from calcium\u2013aluminium-rich inclusions in primitive carbonaceous chondrites. Unlike most common terrestrial minerals, Krotite is generally present as microscopic grains embedded in meteorites rather than as large, isolated crystals. The ideal [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5085,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Krotite: Formula, Properties, Structure, and Occurrence","_seopress_titles_desc":"Krotite is a monoclinic calcium\u2013aluminium oxide mineral found in calcium\u2013aluminium-rich inclusions of carbonaceous chondrite meteorites.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-5147","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article"],"_links":{"self":[{"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/posts\/5147","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/comments?post=5147"}],"version-history":[{"count":2,"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/posts\/5147\/revisions"}],"predecessor-version":[{"id":5149,"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/posts\/5147\/revisions\/5149"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/media\/5085"}],"wp:attachment":[{"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/media?parent=5147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/categories?post=5147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crystals.rocks\/tr\/wp-json\/wp\/v2\/tags?post=5147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}