{"id":5136,"date":"2026-09-19T15:00:51","date_gmt":"2026-09-19T15:00:51","guid":{"rendered":"https:\/\/crystals.rocks\/"},"modified":"2026-09-19T15:01:21","modified_gmt":"2026-09-19T15:01:21","slug":"edscottite","status":"publish","type":"post","link":"https:\/\/crystals.rocks\/cs\/article\/edscottite\/","title":{"rendered":"Edscottit"},"content":{"rendered":"<p>Edskottit je vz\u00e1cn\u00e1 p\u0159\u00edrodn\u00ed miner\u00e1l s chemick\u00fdm vzorcem Fe\u2085C\u2082. Je nejzn\u00e1m\u011bj\u0161\u00ed ze meteorit\u016f, zejm\u00e9na z \u017eeleznat\u00e9ho meteoritu Wedderburn nalezen\u00e9ho v Austr\u00e1lii. Na rozd\u00edl od b\u011b\u017en\u00fdch horninotvorn\u00fdch miner\u00e1l\u016f jako je k\u0159emen, feldspat a v\u00e1penatka se edskottit obvykle vyskytuje jako mikroskopick\u00e9 zrny uvnit\u0159 extraterestrick\u00e9ho kovu, nikoli jako velk\u00e9 krystaly ve b\u011b\u017en\u00fdch terestrick\u00fdch skal\u00e1ch.<\/p>\n<p>Miner\u00e1l pat\u0159\u00ed do skupiny \u017eelezn\u00fdch karbid\u016f. Jeho struktura obsahuje \u017eelezo jako hlavn\u00ed prvek, zat\u00edmco uhl\u00edk zab\u00edr\u00e1 konkr\u00e9tn\u00ed pozice uvnit\u0159 uspo\u0159\u00e1dan\u00e9 krystalick\u00e9 s\u00edt\u011b. Edskottit tedy nen\u00ed jednodu\u0161e uhl\u00edk rozpu\u0161t\u011bn\u00fd n\u00e1hodn\u011b ve slitin\u011b \u017eeleza. Jeho chemick\u00e9 slo\u017een\u00ed a atomov\u00e9 uspo\u0159\u00e1d\u00e1n\u00ed jsou dostate\u010dn\u011b odli\u0161n\u00e1, aby bylo mo\u017en\u00e9 pova\u017eovat jej za nez\u00e1visl\u00fd miner\u00e1ln\u00ed druh.<\/p>\n<p>Edskottit byl form\u00e1ln\u011b p\u0159ijat jako druh miner\u00e1lu Mezin\u00e1rodn\u00ed mineralogickou asociac\u00ed v roce 2019. Miner\u00e1l je pojmenov\u00e1n po <strong>Edward R. D. Scott<\/strong>, v\u011bdec zn\u00e1m\u00fd sv\u00fdmi pracemi na meteoritech a planet\u00e1rn\u00edch materi\u00e1lech.<\/p>\n<p>Edscottit je spojen s velmi redukuj\u00edc\u00edmi, bohat\u00fdmi na \u017eelezo a uhl\u00edk prost\u0159ed\u00edmi. Tyto podm\u00ednky jsou neobvykl\u00e9 na povrchu Zem\u011b, ale mohou vznikat uvnit\u0159 kovov\u00fdch \u010d\u00e1st\u00ed diferencovan\u00fdch asteroid\u016f a jin\u00fdch planet\u00e1rn\u00edch t\u011bles.<\/p>\n<figure id=\"attachment_5089\" aria-describedby=\"caption-attachment-5089\" style=\"width: 300px\" class=\"wp-caption alignleft\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-medium wp-image-5089\" src=\"https:\/\/crystals.rocks\/wp-content\/uploads\/2026\/09\/edscottite-300x200.jpg\" alt=\"Edscottit\" width=\"300\" height=\"200\" srcset=\"\" sizes=\"(max-width: 300px) 100vw, 300px\" data-srcset=\"\" \/><figcaption id=\"caption-attachment-5089\" class=\"wp-caption-text\">Edscottit<\/figcaption><\/figure>\n<h2>Rychl\u00e9 informace o miner\u00e1lu Edscottit<\/h2>\n<p>N\u00e1zev miner\u00e1lu je edscottit. Jeho ide\u00e1ln\u00ed chemick\u00fd vzorec je Fe\u2085C\u2082 a pat\u0159\u00ed mezi \u017eelezn\u00e9 karbidy. Edscottit je spojen s ortorombickou krystalickou soustavou a vyskytuje se p\u0159edev\u0161\u00edm v meteoritech bohat\u00fdch na \u017eelezo a jin\u00fdch extraterestrick\u00fdch kovov\u00fdch materi\u00e1lech. Typick\u00e9 m\u00edsto v\u00fdskytu je meteorit Wedderburn v Austr\u00e1lii. Miner\u00e1l byl v roce 2019 uzn\u00e1n IMA a pojmenov\u00e1n po Edwardu R. D. Scottovi. Zn\u00e1m\u00e9 zrnek jsou mikroskopick\u00e9 a\u017e velmi jemnozrnn\u00e9 a pro tento miner\u00e1l neexistuje \u017e\u00e1dn\u00fd ustaven\u00fd komer\u010dn\u00ed nebo \u0161perka\u0159sk\u00fd trh.<\/p>\n<h2>Objevov\u00e1n\u00ed, typick\u00e9 v\u00fdskyt a pojmenov\u00e1n\u00ed<\/h2>\n<p>Edscottit byl identifikov\u00e1n p\u0159i podrobn\u00e9m studiu meteoritu Wedderburn, neobvykl\u00e9ho \u017eelezn\u00e9ho meteoritu objeven\u00e9ho v Austr\u00e1lii. Vzorek obsahuje vysok\u00e9 mno\u017estv\u00ed kovov\u00e9ho materi\u00e1lu a neobvykl\u00e9 slo\u017een\u00ed miner\u00e1l\u016f. Kdy\u017e v\u011bdci zkoumali jeho mikroskopick\u00e9 f\u00e1ze pomoc\u00ed modern\u00edch analytick\u00fdch metod, identifikovali samostatn\u00fd karbid \u017eeleza s chemick\u00fdm slo\u017een\u00edm Fe\u2085C\u2082 a charakteristickou krystalickou strukturou.<\/p>\n<p>V\u00fdskyt dokazuje, \u017ee meteority mohou zachov\u00e1vat miner\u00e1ln\u00ed f\u00e1ze vznikl\u00e9 za chemick\u00fdch podm\u00ednek odli\u0161n\u00fdch od t\u011bch v zemsk\u00e9 kysl\u00edkov\u00e9 k\u016f\u0159e. F\u00e1ze, kter\u00e1 je vz\u00e1cn\u00e1 nebo obt\u00ed\u017en\u011b zachovateln\u00e1 v terestrick\u00fdch hornin\u00e1ch, m\u016f\u017ee z\u016fstat p\u0159\u00edtomna ve meteoritov\u00e9m materi\u00e1lu.<\/p>\n<p>Po jeho slo\u017een\u00ed a krystalografii byly dostate\u010dn\u011b charakterizov\u00e1ny, f\u00e1ze byla schv\u00e1lena jako nov\u00fd miner\u00e1ln\u00ed druh a pojmenov\u00e1na edscottit v \u010dest Edwarda R. D. Scotta. Meteorit Wedderburn slou\u017e\u00ed jako typick\u00e9 nalezi\u0161t\u011b pro porovn\u00e1n\u00ed s mo\u017en\u00fdmi budouc\u00edmi objevy v jin\u00fdch meteoritech nebo planet\u00e1rn\u00edch vzorc\u00edch.<\/p>\n<h2>Chemick\u00e9 slo\u017een\u00ed a vzorec<\/h2>\n<p>Chemick\u00fd vzorec edscottitu je Fe\u2085C\u2082, co\u017e znamen\u00e1, \u017ee jeho ide\u00e1ln\u00ed slo\u017een\u00ed obsahuje p\u011bt atom\u016f \u017eeleza na ka\u017ed\u00fdch dva atomy uhl\u00edku. T\u00edm se za\u0159azuje mezi \u017eelezn\u00e9 karbidy, slou\u010deniny, ve kter\u00fdch je uhl\u00edk zahrnut do \u017eelezo-dominovan\u00e9 krystalick\u00e9 struktury.<\/p>\n<p>Slo\u017een\u00ed je v souladu s prost\u0159ed\u00edm obsahuj\u00edc\u00edm velk\u00e9 mno\u017estv\u00ed kovov\u00e9ho \u017eeleza a dostatek uhl\u00edku pro vznik rostouc\u00edho karbidov\u00e9ho struktury. Aktivita kysl\u00edku mus\u00ed b\u00fdt dostate\u010dn\u011b n\u00edzk\u00e1, aby z\u016fstalo kovov\u00e9 \u017eelezo a \u017eelezo karbid stabiln\u00ed. Materi\u00e1l mus\u00ed tak\u00e9 proj\u00edt vhodnou teplotn\u00ed oblast\u00ed p\u0159i chladnut\u00ed, aby se karbid krystalizoval nebo z\u016fstal zachov\u00e1n.<\/p>\n<p>Edscottit m\u016f\u017ee vystupovat spole\u010dn\u011b s kovov\u00fdm \u017eelezem, f\u00e1zemi niklu-\u017eeleza, sulfidy, fosfidy, silikaty a dal\u0161\u00edmi karbidov\u00fdmi miner\u00e1ly. Celkov\u00e1 miner\u00e1ln\u00ed asociace je \u010dasto informativn\u011bj\u0161\u00ed ne\u017e izolovan\u00fd vzorec, proto\u017ee zaznamen\u00e1v\u00e1 aspekty oxidace, teploty, tlaku a chemick\u00e9ho v\u00fdvoje mate\u0159sk\u00e9ho t\u011blesa.<\/p>\n<h2>Krystalick\u00e1 struktura a t\u0159\u00edd\u011bn\u00ed miner\u00e1l\u016f<\/h2>\n<p>Edscottit je spojen s <strong>ortorombick\u00fd krystalografick\u00fd syst\u00e9m<\/strong>Ve struktu\u0159e ortorombick\u00e9, krystalov\u00e1 m\u0159\u00ed\u017e m\u00e1 t\u0159i vz\u00e1jemn\u011b kolm\u00e9 osy r\u016fzn\u00fdch d\u00e9lek.<\/p>\n<figure id=\"attachment_5090\" aria-describedby=\"caption-attachment-5090\" style=\"width: 300px\" class=\"wp-caption alignright\"><img decoding=\"async\" class=\"size-medium wp-image-5090\" src=\"https:\/\/crystals.rocks\/wp-content\/uploads\/2026\/09\/edscottite-2-300x200.jpg\" alt=\"Edscottit\" width=\"300\" height=\"200\" srcset=\"\" sizes=\"(max-width: 300px) 100vw, 300px\" data-srcset=\"\" \/><figcaption id=\"caption-attachment-5090\" class=\"wp-caption-text\">Edscottit<\/figcaption><\/figure>\n<p>Na atom\u00e1rn\u00ed \u00farovni tvo\u0159\u00ed \u017eelezo dominantn\u00ed struktur\u00e1ln\u00ed r\u00e1m, zat\u00edmco uhl\u00edk zab\u00edr\u00e1 uspo\u0159\u00e1dan\u00e1 m\u00edsta v m\u0159\u00ed\u017ece. Toto uspo\u0159\u00e1d\u00e1n\u00ed rozli\u0161uje edskottit od jin\u00fdch f\u00e1z\u00ed \u017eelezn\u00e9ho karbidu se stejn\u00fdm slo\u017een\u00edm.<\/p>\n<p>N\u011bkolik \u017eelezn\u00fdch karbid\u016f m\u016f\u017ee vzniknout ve srovnateln\u00fdch meteoritov\u00fdch prost\u0159ed\u00edch, tak\u017ee chemick\u00e1 anal\u00fdza sama o sob\u011b nemus\u00ed b\u00fdt pro ur\u010den\u00ed identifikace dosta\u010duj\u00edc\u00ed. V\u011bdci obvykle kombinuj\u00ed chemick\u00e9 slo\u017een\u00ed s difrak\u010dn\u00edmi daty, parametry krystalu a mikroskopick\u00fdmi pozorov\u00e1n\u00edm.<\/p>\n<p>Strukturn\u00ed poloha uhl\u00edku je tak\u00e9 d\u016fle\u017eit\u00e1. Uhl\u00edk je sou\u010d\u00e1st\u00ed definovan\u00e9 miner\u00e1ln\u00ed m\u0159\u00ed\u017eky a nikoli nepravidelnou ne\u010distotou v \u010dist\u00e9m \u017eeleze. Tato uspo\u0159\u00e1dan\u00e1 struktura je jedn\u00edm z d\u016fvod\u016f, pro\u010d edscottit byl za\u0159azen jako samostatn\u00fd druh miner\u00e1lu.<\/p>\n<h2>Jak se tvo\u0159\u00ed edskottit?<\/h2>\n<p>Edscottit vznik\u00e1 za siln\u011b redukuj\u00edc\u00edch, \u017eelezo bohat\u00fdch a uhl\u00edkov\u00fdch podm\u00ednek. V takov\u00e9m prost\u0159ed\u00ed je kysl\u00edk vz\u00e1cn\u00fd ve srovn\u00e1n\u00ed s \u017eelezem, co\u017e umo\u017e\u0148uje stabiln\u00ed existenci kovov\u00e9ho \u017eeleza. Jak se kov ochlazuje, m\u016f\u017ee uhl\u00edk reagovat s \u017eelezem a krystalizovat jako \u017eelezn\u00fd karbid.<\/p>\n<p>Nejpravd\u011bpodobn\u011bj\u0161\u00ed prost\u0159ed\u00ed je kovov\u00fd vnit\u0159n\u00ed povrch nebo kovov\u011b bohat\u00e1 \u010d\u00e1st extraterestrick\u00e9ho rodi\u010dovsk\u00e9ho t\u011blesa. B\u011bhem taven\u00ed a diferenciace se \u017eeleznat\u00fd kov odd\u011bluje od silik\u00e1tov\u00e9ho materi\u00e1lu. Uhl\u00edk m\u016f\u017ee b\u00fdt rozpou\u0161t\u011bn v kapaln\u00e9m kovov\u00e9m prost\u0159ed\u00ed nebo se st\u00e1hne do pevn\u00e9ho kovu. Kdy\u017e teplota kles\u00e1, \u017eelezo-uhlovod\u00edkov\u00e9 slou\u010deniny se st\u00e1vaj\u00ed stabiln\u00edmi a vznikaj\u00ed karbidov\u00e9 f\u00e1ze. Dal\u0161\u00ed chladnut\u00ed m\u016f\u017ee zachovat mikroskopick\u00e9 zrnka edscottitu uvnit\u0159 matrice meteoritu.<\/p>\n<p>P\u0159esn\u00fd cestou tvorby m\u016f\u017ee se li\u0161it podle tlaku, teploty, objemov\u00e9ho slo\u017een\u00ed, rychlosti ochlazov\u00e1n\u00ed a dostupnosti s\u00edry, niklu, fosforu a dal\u0161\u00edch prvk\u016f. Pro tuto p\u0159\u00ed\u010dinu by edskottit m\u011bl b\u00fdt interpretov\u00e1n jako sou\u010d\u00e1st miner\u00e1ln\u00edho asocia\u010dn\u00edho ne\u017e jako d\u016fkaz jedn\u00e9 teploty nebo ud\u00e1losti.<\/p>\n<h2>Kde se nach\u00e1z\u00ed edskotit?<\/h2>\n<p>Nejzn\u00e1m\u011bj\u0161\u00ed a typick\u00fd v\u00fdskyt edscottitu je the <strong>Meteorit Wedderburn v Austr\u00e1lii<\/strong>Vyskytuje se tam jako velmi mal\u00e1 f\u00e1ze spojen\u00e1 s \u017eelezo bohat\u00fdm meteoritick\u00fdm materi\u00e1lem. Proto\u017ee je miner\u00e1l obt\u00ed\u017en\u00e9 poznat bez laboratorn\u00ed anal\u00fdzy, po\u010det potvrzen\u00fdch lokalit z\u016fst\u00e1v\u00e1 omezen\u00fd.<\/p>\n<p>Edscottit nen\u00ed zn\u00e1m jako b\u011b\u017en\u00fd miner\u00e1l v oby\u010dejn\u00fdch terestrick\u00fdch rudn\u00edch z\u00e1sob\u00e1ch. Jeho dokumentovan\u00e9 v\u00fdskyty jsou p\u0159edev\u0161\u00edm vesm\u00edrn\u00e9, i kdy\u017e meteorit obsahuj\u00edc\u00ed jej je nyn\u00ed um\u00edst\u011bn na Zemi.<\/p>\n<p>Informace o lokalit\u011b pro edscottit m\u016f\u017ee odkazovat na meteorit, vybrou\u0161en\u00fd \u0159ez meteoritu, planet\u00e1rn\u00ed vzorek, asteroidn\u00ed vzorek nebo laboratorn\u011b p\u0159ipraven\u00fd miner\u00e1ln\u00ed mont\u00e1\u017e, nikoli na konven\u010dn\u00ed dol nebo geologickou v\u00fdv\u011bru.<\/p>\n<p>Potenci\u00e1ln\u00ed v\u00fdskyty v jin\u00fdch \u017eelezn\u00fdch meteoritech, vr\u00e1cen\u00fdch asteroidov\u00fdch vzorc\u00edch nebo planet\u00e1rn\u00edch materi\u00e1lech by vy\u017eadovaly form\u00e1ln\u00ed chemickou a krystalografickou potvrzen\u00ed.<\/p>\n<h2>Edskotit v meteoritech<\/h2>\n<p>Meteority zachov\u00e1vaj\u00ed miner\u00e1ln\u00ed f\u00e1ze, kter\u00e9 vznikly v ran\u00e9m Slune\u010dn\u00edm syst\u00e9mu nebo uvnit\u0159 diferencovan\u00fdch rodi\u010dovsk\u00fdch t\u011bles. \u017delezn\u00e9 meteority jsou zvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e9, proto\u017ee mohou p\u0159edstavovat fragmenty kovov\u00fdch jader nebo hlubok\u00fdch kovov\u011b bohat\u00fdch oblast\u00ed asteroid\u016f, kter\u00e9 byly pozd\u011bji naru\u0161eny dopady.<\/p>\n<p>Ve \u017eelezn\u00e9m meteoritu se edskottit m\u016f\u017ee vyskytovat jako mikroskopick\u00e9 zrny uvnit\u0159 nebo vedle kovov\u00e9ho \u017eeleza. M\u016f\u017ee b\u00fdt vz\u00e1jemn\u011b spojen s jin\u00fdmi karbidov\u00fdmi f\u00e1zemi, miner\u00e1ly niklu-\u017eeleza, sulfidy, fosfidy nebo silik\u00e1tov\u00fdmi inkluzemi. Tyto vztahy lze zkoumat p\u0159i interpretaci oxida\u010dn\u011b-reduk\u010dn\u00edho stavu mate\u0159sk\u00e9ho t\u011blesa, rozd\u011blen\u00ed uhl\u00edku v kovov\u00e9m materi\u00e1lu, rychlosti chladnut\u00ed \u017eelezo-bohat\u00fdch tavenin a po\u0159ad\u00ed, ve kter\u00e9m se karbidov\u00e9 a kovov\u00e9 f\u00e1ze krystalizovaly.<\/p>\n<p>V\u00fdskyt miner\u00e1lu m\u016f\u017ee b\u00fdt tak\u00e9 zv\u00e1\u017een p\u0159i srovn\u00e1v\u00e1n\u00ed r\u016fzn\u00fdch skupin meteorit\u016f a p\u0159i zkoum\u00e1n\u00ed odd\u011blen\u00ed kovu od silik\u00e1t\u016f b\u011bhem planet\u00e1rn\u00ed diferenciace.<\/p>\n<h2>Fyzik\u00e1ln\u00ed vlastnosti edskottitu<\/h2>\n<p>Proto\u017ee edskottit je v\u00fdjime\u010dn\u011b vz\u00e1cn\u00fd a obvykle se vyskytuje jako mikroskopick\u00e9 zrny, mnoho b\u011b\u017en\u00fdch vlastnost\u00ed rukou zkouman\u00e9ho vzorku je \u0161patn\u011b omezeno. Obvykle nen\u00ed k dispozici jako velk\u00fd izolovan\u00fd krystal, kter\u00fd lze prozkoumat lupou nebo testovat jednoduch\u00fdmi poln\u00edmi metodami.<\/p>\n<p>Vlastnosti nejv\u00fdznamn\u011bj\u0161\u00ed pro identifikaci jsou chemie, krystalick\u00e1 struktura a v\u00fdskyt. Jednotliv\u00e9 zrny jsou obvykle p\u0159\u00edli\u0161 mal\u00e9 na d\u016fv\u011bryhodn\u00e9 popis makroskopick\u00e9 barvy. Kovov\u00fd nebo subkovov\u00fd vzhled m\u016f\u017ee b\u00fdt navr\u017een okoln\u00edm \u017eelezoobsahuj\u00edc\u00edm matric\u00ed, ale lesk s\u00e1m o sob\u011b nem\u016f\u017ee identifikovat miner\u00e1l.<\/p>\n<p>Edscottit se v b\u011b\u017en\u00e9m p\u0159\u00edrod\u011b nevyskytuje jako pr\u016fsvitn\u00fd nebo polopruh\u00fd kvalitn\u00ed krystal. D\u016fv\u011bryhodn\u00fd rukou zji\u0161t\u011bn\u00fd st\u0159ih je obvykle nedostupn\u00fd, proto\u017ee zrn\u00ed jsou velmi mal\u00e1 a \u010dasto vz\u00e1jemn\u011b spojen\u00e1 s jin\u00fdmi f\u00e1zemi. Rozd\u011blen\u00ed a lom jsou tak\u00e9 obt\u00ed\u017en\u00e9 pozorovat.<\/p>\n<p>Jeho obsah \u017eeleza nazna\u010duje relativn\u011b vysokou hustotu ve srovn\u00e1n\u00ed s mnoha b\u011b\u017en\u00fdmi nekovov\u00fdmi miner\u00e1ly, i kdy\u017e m\u011b\u0159en\u00ed celkov\u00e9ho meteoritu zahrnuje dal\u0161\u00ed slo\u017eky. Definitivn\u00ed hodnota tvrdosti v ter\u00e9nu se nepou\u017e\u00edv\u00e1 \u010dasto, proto\u017ee izolovan\u00e9 zrny jsou p\u0159\u00edli\u0161 mal\u00e9 na smyslupln\u00fd test ot\u0159esu.<\/p>\n<figure id=\"attachment_5091\" aria-describedby=\"caption-attachment-5091\" style=\"width: 300px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-medium wp-image-5091\" src=\"https:\/\/crystals.rocks\/wp-content\/uploads\/2026\/09\/edscottite-3-300x178.jpg\" alt=\"Edscottit\" width=\"300\" height=\"178\" srcset=\"\" sizes=\"(max-width: 300px) 100vw, 300px\" data-srcset=\"\" \/><figcaption id=\"caption-attachment-5091\" class=\"wp-caption-text\">Edscottit<\/figcaption><\/figure>\n<h2>Jak je identifikov\u00e1n Edscottit?<\/h2>\n<p>Vizu\u00e1ln\u00ed kontrola nen\u00ed dosta\u010duj\u00edc\u00ed pro identifikaci edscottitu. Meteorit obsahuj\u00edc\u00ed jej m\u016f\u017ee vypadat pouh\u00fdm okem jenom kovov\u011b, \u0161ed\u011b nebo bohat\u011b na \u017eelezo. Potvrzen\u00ed miner\u00e1lu vy\u017eaduje d\u016fkaz o jeho slo\u017een\u00ed Fe\u2085C\u2082 a jeho charakteristick\u00e9 krystalick\u00e9 struktu\u0159e.<\/p>\n<p>V\u011bdci mohou kombinovat skenovac\u00ed elektronovou mikroskopii pro zkoum\u00e1n\u00ed tvaru zrn a intergrov\u00e1n\u00ed, energii-disperzn\u00ed rentgenov\u00e9 spektroskopie pro rychlou chemickou anal\u00fdzu, elektronovou sondu mikroanal\u00fdzy pro kvantitativn\u00ed slo\u017een\u00ed, elektronovou difrakci pro krystalografickou uspo\u0159\u00e1danost a rentgenovou difrakci nebo mikro-difrakci, pokud je dostatek materi\u00e1lu.<\/p>\n<p>Prost\u0159ednictv\u00edm mikroskopie odra\u017een\u00e9ho sv\u011btla a petrografick\u00e9 anal\u00fdzy lze uk\u00e1zat, jak edskottit souvis\u00ed s kovov\u00fdm \u017eelezem a sousedn\u00edmi miner\u00e1ln\u00edmi f\u00e1zemi. P\u0159i velmi mal\u00fdch zrnech nebo t\u011bsn\u011b spojen\u00fdch projevech m\u016f\u017ee b\u00fdt nutn\u00e1 pou\u017eit\u00ed metod s vysok\u00fdm rozli\u0161en\u00edm.<\/p>\n<p>D\u016fv\u011bryhodn\u00e1 identifikace by m\u011bla zahrnovat pln\u00fd miner\u00e1ln\u00ed kontext. Slo\u017een\u00ed, chov\u00e1n\u00ed p\u0159i difrakci, textura a asociace s jin\u00fdmi f\u00e1zemi by m\u011bly souhlasit p\u0159edt\u00edm, ne\u017e je zrnko hl\u00e1seno jako edskottit.<\/p>\n<h2>Typy a druhy edskotitu<\/h2>\n<p>Edskotit je <strong>jedna rozpoznan\u00e1 miner\u00e1ln\u00ed druh<\/strong>, nikoli \u0161irok\u00e1 komer\u010dn\u00ed skupina miner\u00e1l\u016f s mnoha uzn\u00e1van\u00fdmi druh\u016fmi. Neexistuj\u00ed \u017e\u00e1dn\u00e9 ofici\u00e1ln\u011b uzn\u00e1van\u00e9 stupn\u011b drahokam\u016f, pojmenovan\u00e9 barviv\u00e9 varianty nebo dekorativn\u00ed formy.<\/p>\n<p>Typy materi\u00e1lu b\u011b\u017en\u011b diskutovan\u00e9 v mineralogick\u00fdch popisech zahrnuj\u00ed:<\/p>\n<ul>\n<li><strong>Typ v\u00fdskytu materi\u00e1lu:<\/strong> Edskotit z meteoritu Wedderburn, kter\u00fd slou\u017e\u00ed jako reference v\u00fdskyt.<\/li>\n<li><strong>Mikroskopick\u00e9 meteoritick\u00e9 zrny:<\/strong> Mal\u00e9 jednotliv\u00e9 zrnek rozpt\u00fdlen\u00e9 v matici bohat\u00e9 na \u017eelezo meteoritu.<\/li>\n<li><strong>Svazan\u00fd edskottit:<\/strong> Zrn\u00ed v p\u0159\u00edm\u00e9m kontaktu s kovov\u00fdm \u017eelezem nebo jin\u00fdmi karbidov\u00fdmi f\u00e1zemi.<\/li>\n<li><strong>Texturov\u00e9 formy:<\/strong> Rozd\u00edly v velikosti, tvaru, orientaci a rozlo\u017een\u00ed zrn zp\u016fsoben\u00e9 m\u00edstn\u00edmi podm\u00ednkami krystalizace.<\/li>\n<li><strong>Kompozi\u010dn\u00ed variace:<\/strong> Mal\u00e9 chemick\u00e9 rozd\u00edly spojen\u00e9 s sousedn\u00edmi f\u00e1zemi nebo analytickou neur\u010ditost\u00ed.<\/li>\n<li><strong>V\u00fdzkumn\u00e9 vzorky:<\/strong> Vy\u017eloutl\u00e9 sekce, zrnit\u00e9 mont\u00e1\u017ee a fragmenty meteorit\u016f p\u0159ipraven\u00e9 pro laboratorn\u00ed anal\u00fdzu.<\/li>\n<\/ul>\n<p>Tyto popisy odkazuj\u00ed na v\u00fdskyt a texturu, nikoli na ofici\u00e1ln\u011b pojmenovan\u00e9 variety. Nov\u00e1 varianta nebo souvisej\u00edc\u00ed miner\u00e1l vy\u017eaduje samostatnou chemickou a krystalografickou charakterizaci.<\/p>\n<h2>Edskotit ve srovn\u00e1n\u00ed s jin\u00fdmi \u017eelezn\u00fdmi karbidy<\/h2>\n<p>Edskottit je jednou \u010dl\u00e1nkem \u0161ir\u0161\u00ed rodiny \u017eelezo-uhl\u00edkov\u00fdch slou\u010denin. Jin\u00e9 f\u00e1ze \u017eelezn\u00fdch karbid\u016f mohou vzniknout za podobn\u00fdch redukuj\u00edc\u00edch podm\u00ednek a mohou se vyskytovat ve srovnateln\u00fdch meteoritov\u00fdch materi\u00e1lech.<\/p>\n<p>Rozli\u0161en\u00ed mezi edskottitem a jin\u00fdm karbidem je zalo\u017eeno na nam\u011b\u0159en\u00e9m pom\u011bru \u017eeleza ke uhlovod\u00edku, krystalick\u00e9 symetrii, parametrech jednotkov\u00e9 bu\u0148ky, difrak\u010dn\u00edch odrazech, struktur\u00e1ln\u00ed uspo\u0159\u00e1danosti, mikroskopick\u00e9m texturu a asociaci s kovov\u00fdm \u017eelezem a dal\u0161\u00edmi f\u00e1zemi.<\/p>\n<p>Samotn\u00fd chemick\u00fd vzorec by nem\u011bl b\u00fdt pou\u017eit k identifikaci nezn\u00e1m\u00e9ho zrn\u00ed. Dva f\u00e1ze mohou m\u00edt podobn\u00e9 slo\u017een\u00ed, ale r\u016fzn\u00e9 krystalov\u00e9 struktury. Tedy t\u0159\u00edd\u011bn\u00ed miner\u00e1l\u016f z\u00e1vis\u00ed na obou chemick\u00fdch a krystalografick\u00fdch datech.<\/p>\n<h2>Geologick\u00fd a meteoritick\u00fd kontext<\/h2>\n<p>Edscottit je spojen s \u017eelezem bohat\u00fdm, uhl\u00edkem nosn\u00fdm materi\u00e1lem vznikl\u00fdm za n\u00edzk\u00e9 aktivity kysl\u00edku. V sekci meteoritu lze jeho slo\u017een\u00ed a texturovou vztah s kovov\u00fdm \u017eelezem, sulfidy, fosfidy, silik\u00e1ty a dal\u0161\u00edmi karbidy p\u0159i interpretaci chladnut\u00ed a krystalizace mate\u0159sk\u00e9ho t\u011blesa zv\u00e1\u017eit.<\/p>\n<p>Miner\u00e1l nesm\u00ed b\u00fdt pou\u017e\u00edv\u00e1n jako samostatn\u00fd teplom\u011br nebo indik\u00e1tor fugacity kysl\u00edku. Teplota, tlak, redoxn\u00ed podm\u00ednky a rychlost chlazen\u00ed mus\u00ed b\u00fdt vyhodnoceny pomoc\u00ed cel\u00e9ho miner\u00e1ln\u00edho assembl\u00e1\u017ee a nez\u00e1visl\u00fdch analytick\u00fdch d\u016fkaz\u016f.<\/p>\n<h2>Pou\u017eit\u00ed a obchodn\u00ed status<\/h2>\n<p>Edscottit nem\u00e1 zaveden\u00e9 komer\u010dn\u00ed, pr\u016fmyslov\u00e9 nebo \u0161perka\u0159sk\u00e9 pou\u017eit\u00ed. Nen\u00ed t\u011b\u017een jako ruda, \u0159ez\u00e1n jako drahokam nebo obchodovan\u00fd jako b\u011b\u017en\u00e1 miner\u00e1ln\u00ed surovina. Potvrzen\u00e9 materi\u00e1ly jsou omezen\u00e9 a jsou obvykle ulo\u017eeny ve vzorc\u00edch meteorit\u016f, polrovn\u00fdch sekc\u00edch, v\u00fdzkumn\u00fdch kolekc\u00edch nebo institucion\u00e1ln\u00edch archiv\u00e1ch.<\/p>\n<p>Jeho dokumentovan\u00e9 pou\u017eit\u00ed je omezeno na identifikaci a popis miner\u00e1l\u016f, klasifikaci meteorit\u016f, studium \u017eelezo-uhl\u00edkov\u00fdch f\u00e1zov\u00fdch vztah\u016f a referen\u010dn\u00ed nebo v\u00fdukov\u00e9 sb\u00edrky.<\/p>\n<p>Tvzen\u00ed, \u017ee oby\u010dejn\u00e9 terestrick\u00e9 \u017eelezn\u00e9 horniny nebo kovov\u00e9 p\u0159edm\u011bty obsahuj\u00ed edskottit, by m\u011blo b\u00fdt zpracov\u00e1no opatrn\u011b. Laboratorn\u00ed anal\u00fdza je nutn\u00e1, proto\u017ee vizu\u00e1ln\u00ed podobnost nem\u016f\u017ee rozli\u0161it edskottit od \u010dist\u00e9ho \u017eeleza, jin\u00fdch karbid\u016f nebo pr\u016fmyslov\u00fdch \u017eelezo-uhl\u00edkov\u00fdch materi\u00e1l\u016f.<\/p>\n<h2>P\u0159ehled miner\u00e1lu Edscottit<\/h2>\n<p>Edskotit je vz\u00e1cn\u00e1 \u017eelezn\u00e1 karbidov\u00e1 miner\u00e1l s formulem <strong>Fe\u2085C\u2082<\/strong> a orthorombickou krystalickou strukturou. Byl uzn\u00e1n jako samostatn\u00fd miner\u00e1ln\u00ed druh v roce 2019, byl pojmenov\u00e1n podle v\u00fdzkumn\u00edka meteorit\u016f Edwarda R. D. Scootta a je nejzn\u00e1m\u011bj\u0161\u00ed z meteoritu Wedderburn v Austr\u00e1lii.<\/p>\n<p>Miner\u00e1l vznik\u00e1 za velmi redukuj\u00edc\u00edch podm\u00ednek, kdy mohou existovat \u017eelezn\u00e9 kovy a uhl\u00edk. Proto\u017ee se obvykle vyskytuje jako mikroskopick\u00e9 zrny, edscottit nelze spolehliv\u011b ur\u010dit podle barvy, lesku, tvrdosti nebo jin\u00fdch jednoduch\u00fdch poln\u00edch test\u016f. Definitivn\u00ed identifikace vy\u017eaduje chemickou a krystalografickou anal\u00fdzu.<\/p>\n<p>I p\u0159esn\u011bji edscottit nem\u00e1 stanoven\u00e9 pr\u016fmyslov\u00e9 nebo klenotnick\u00e9 pou\u017eit\u00ed, jeho slo\u017een\u00ed, struktura a vztah ke sousedn\u00edm f\u00e1z\u00edm dokumentuj\u00ed \u017eelezo-uhl\u00edkovou chemii ve vesm\u00edrn\u00e9m materi\u00e1lu. Tyto vlastnosti jsou uva\u017eov\u00e1ny p\u0159i popisu meteorit\u016f a jejich mate\u0159sk\u00e9ho t\u011blesa.<\/p>","protected":false},"excerpt":{"rendered":"<p>Edscottite is a rare, naturally occurring iron carbide mineral with the chemical formula Fe\u2085C\u2082. It is best known from meteorites, especially the iron-rich Wedderburn meteorite found in Australia. Unlike common rock-forming minerals such as quartz, feldspar, and calcite, edscottite generally occurs as microscopic grains inside extraterrestrial metal rather than as large crystals in ordinary terrestrial [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5089,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"Edscottite Mineral: Properties, Formula, Formation, Occurrence, and Uses","_seopress_titles_desc":"Learn about edscottite, including its Fe\u2085C\u2082 formula, orthorhombic structure, meteorite occurrence, formation under reducing conditions, identification methods, and mineral classification.","_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-5136","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article"],"_links":{"self":[{"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/posts\/5136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/comments?post=5136"}],"version-history":[{"count":2,"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/posts\/5136\/revisions"}],"predecessor-version":[{"id":5138,"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/posts\/5136\/revisions\/5138"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/media\/5089"}],"wp:attachment":[{"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/media?parent=5136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/categories?post=5136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/crystals.rocks\/cs\/wp-json\/wp\/v2\/tags?post=5136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}