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rdfs:label
铬铁矿 Kromito كروميت Chromite Хроміт Хромит Kromit Cromita Cromita Chromite Cromite Chromit Chromit Cromita Chromiet Chromit クロム鉄鉱 Χρωμίτης Kromita Kromit
rdfs:comment
Kromit adalah sebuah wujud mineral dari besi kromium oksida. Mineral tersebut memiliki rumus kimia FeCr2O4. Senyawa tersebut adalah sebuah yang masuk . Unsur magnesium dapat menggantikan besi dalam jumlah tertentu karena unsur tersebut membentuk dengan magnesiokromit (MgCr2O4). Unsur aluminium juga dapat diganti dengan (FeAl2O4). Kromit sekarang dipakai untuk membuat baja tahan karat lewat produksi (FeCr), yang merupakan logam paduan besi-kromium. La cromita es un mineral de composición FeCr2O4 perteneciente al grupo IV (óxidos) según la clasificación de Strunz.Llamado en un principio fer chromate alumine por Louis-Nicolas Vauquelin y Tassaert (1798),​ el nombre de cromita se debe a Wilhelm Karl Ritter von Haidinger (1845) y hace referencia a su contenido de cromo.​ Chromit, auch als Chromeisenstein oder Chromeisenerz bekannt, ist ein häufig vorkommendes Mineral aus der Gruppe der Spinelle innerhalb der Mineralklasse der „Oxide und Hydroxide“. Mit der idealisierten chemischen Zusammensetzung Fe2+Cr2O4 ist es chemisch gesehen ein Eisen-Chrom-Oxid. Mit einer Mohshärte von 5,5, die in etwa der Härte von Fensterglas entspricht, gehört Chromit zu den mittelharten Mineralen. Er zeigt keine Spaltbarkeit, ist jedoch spröde und bricht bei Beanspruchung mit unebenen bis schwach muscheligen Flächen. Cromita é um óxido duplo de ferro e cromo: ( FeCr2O4 ), contendo 32,1% de FeO e 67,9% de Cr2O3 . É um óxido mineral pertencente ao grupo dos espinélios. O magnésio está presente sempre em quantidades váriáveis como, também, o ferro e o alumínio substituindo o cromo. Portanto, a cromita pode apresentar composição variável , podendo o FeO ser substituído parcialmente pelo MgO e o Cr2O3 ( em torno de 65% ) por Al2O3. É possível estarem presentes Fe2O3 , MnO e ZnO. Em 2003 a produção brasileira foi de 405 mil toneladas contendo 161 mil toneladas de Cr2O3. Variedade: Magnésiocromita La cromite è un minerale, appartenente al gruppo degli spinelli, caratterizzato da un elevato contenuto in Cr2O3, in genere superiore al 37%; per contenuti in Cr2O3 significativi ma minori si parla di Cr-spinello. Generalmente la cromite si presenta massiva. Quando sono presenti cristalli, mostrano abito ottaedrico.I cristalli di cromite appartengono al sistema cristallino cubico. Chromit – minerał z grupy tlenków, zaliczany do grupy spineli chromowych. Nazwa pochodzi od składu chemicznego minerału, którego głównym składnikiem jest chrom; gr. khroma (chroma) = kolor, barwa (W Haidinger – 1845 r.). Minerał pospolity, szeroko rozpowszechniony. Jeden z pierwszych minerałów, które wyodrębniają się w procesie różnicowania magmy. الكروميت هو أكسيد حديد الكروم. وهو معدن أكسيد ينتمي إلى مجموعة الإسبنيل. يمكن أن تكون بديلا عن المغنيسيوم الحديد بكميات متغيره، كما أنها تشكل حلا متينة مع استبدال كروم المغنيسيوم من الألومنيوم. 铬铁矿是一种矿物,主要成分为铁、镁和铬的氧化物:(Fe, Mg)Cr2O4,是尖晶石的一种。它是唯一可开采的铬矿石,矿物成分较复杂,镁的含量不定,有时也含铝和铁元素。自然界含铬矿物约30种,但具有工业价值的只有铬铁矿,中国常见的有铬铁矿、铝铬铁矿和富铬尖晶石。 铬铁矿难熔,用作材料,也用于制取三氧化二铬、重铬酸钠、重铬酸钾等铬化合物。 铬铁矿的产地主要为巴西和古巴,生产国则主要是印度、伊朗、巴基斯坦、阿曼、津巴布韦、土耳其和南非,共占世界产量的80%,其中南非一国的产量便占40%。铬铁矿主要存在于中国的四川、西藏、甘肃、青海等省份。 铬矿是发展冶金、国防、化工等工业不可缺少的矿产资源,主要用于冶金工业生产不锈钢及各种合金钢、合金,在玻璃、陶瓷、、耐火材料等方面也有广泛用途。包括: * 铸造级:用于大型铸钢件、铸造型砂、钢包引流砂 * 冶金级:用于生产高碳铬铁和低微碳铬铁 * 耐火级/化工级:用于生产镁铬砂、镁铬砖等耐火材料 南非的草原高地复合构造是世界上的铬矿资源储量最丰富的地区,占全世界已知铬储量的76.1%。其中西矿带是以鲁斯腾堡(RUSTENBURG)为中心,而东矿带以斯蒂尔波特(STEELPOORT)和博格斯福德(BUGERSFORT) Kromit, (FeCr2O4), är ett dubbeloxidmineral som i rent tillstånd viktmässigt innehåller 46,46 % krom eller 68 % räknat som kromoxid och 24,95 % järn eller 32 % järnoxid räknat som FeO. Kromit förekommer dels insprängt i olika ultrabasiska bergarter, till exempel serpentinit och peridotit, dels i kornig form i kompakta massor och dels i vaskavlagringar. Sammansättningen kan dock variera eftersom järnet ersätts lätt av magnesium (magnesiumkromit MgCr2O4) samt att kromet ersätts av aluminium (hercynit FeAl2O4). Het mineraal chromiet is een ijzer-chromaat met de chemische formule FeCr2O4. La kromito aŭ kromferŝtono kromfererco estas dura, metala, brunnigra oksida mineralo, kromofera oksido (FeCr2O4), plej grava industria erco de la kromo (kroma enteno 73 %). ĝi kristaliĝas en . Ĝi havas brunan skrapsurfacon, durecon de 5,5 kaj denson de 4,1 ĝis 5,1. Ĝi estas la plej grava membro de la de la . La serio dua natura membro estas la , kiu estas kromoksido (MgCr2O4) la magnezio kaj kromo. La kromito formas ordinare fragilan konglomeraton en peridotitoj, kaj aliaj bazaj magmaj kaj transformiĝintaj ŝtonaroj. Lia malofte formas kristalan enfermaĵon en diamanto. La cromita és un mineral de la classe dels òxids. Va rebre el seu nom l'any 1845 per Wilhelm Haidinger a causa de la seva composició a base de crom. Aquesta espècie va ser anomenada originàriament fer chromate alumine per Louis Nicolas Vauquelin el 1798, el descobridor de l'element crom. Forma part del grup de l'espinel·la de minerals. És dimorf de la xieïta, i isostructural amb la magnesiocromita i la magnetita. Chromite is a crystalline mineral composed primarily of iron(II) oxide and chromium(III) oxide compounds. It can be represented by the chemical formula of FeCr2O4. It is an oxide mineral belonging to the spinel group. The element magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr2O4). A substitution of the element aluminium can also occur, leading to hercynite (FeAl2O4). Chromite today is mined particularly to make stainless steel through the production of ferrochrome (FeCr), which is an iron-chromium alloy. Kromita (Fe, Mg)Cr2O4 formula kimikoa duen mineral kromodun, burdinadun eta magnesioduna da. Magnesioa beti ageri da kantitate aldakorretan; aluminioa eta burdina kromoa ordezkatuz ageri daitezke. Espinelaren taldekoa da. La chromite est une espèce minérale du groupe du spinelle, de formule FeCr2O4 (ou FeO.Cr2O3) avec des traces de magnésium, manganèse, zinc et aluminium. Les rares cristaux peuvent atteindre un centimètre. Elle forme une série avec l’hercynite d'une part et avec la magnésiochromite d'autre part. Хроми́т (хромистый железняк, хромистый шпинель) — минерал хрома. Крайний член изоморфного ряда хромшпинелидов переменного состава магнезиохромит (MgCr2O4) — хромит (FeCr2O4) из класса оксидов. Наряду с другими хромшпинелидами относится к группе (семейству) шпинели. クロム鉄鉱(くろむてっこう、chromite、クロマイト)は、鉄、マグネシウム、クロムが主成分の酸化鉱物。モース硬度5.5、組成式は (Fe,Mg)Cr2O4 で、磁鉄鉱などと同様にスピネル型結晶構造を取るスピネルグループの鉱物。 色は黒色が基本であるが、茶色がかっている場合もある。 クロム鉄鉱内のマグネシウムの比率は常に一定でなく、鉄よりもマグネシウムが多いと(magnesiochromite,MgCr2O4)になる(両者の固溶体は、俗に「クロムスピネル(chromianspinel)と呼ばれる)。鉄の代わりにアルミニウムが含まれていることもある。鉄分を含むが、磁性は弱いかほとんど無い。 主にかんらん岩や変成岩など岩石の中に存在し、クロムを生成する上で重要な鉱石鉱物となっている。灰クロム柘榴石を伴うことが多い。 Хромі́т, хромистий залізняк — мінерал, що складається з заліза, хрому і кисню; єдина руда для одержання хрому. Ο χρωμίτης (αγγλ. chromite) είναι ορυκτό οξείδιο του σιδήρου και του χρωμίου, του οποίου αποτελεί το κυριότερο μετάλλευμα. Chromit (Haidinger, 1845), chemický vzorec FeCr2O4, je krychlový minerál. Společně s dalšími minerály patří mezi tzv. spinelidy. Název odráží jeho složení.
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Chromite
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dbpedia-sv:Kromit dbpedia-nl:Chromiet dbpedia-vi:Chromit n12:96U5 dbpedia-eo:Kromito dbpedia-zh:铬铁矿 wikidata:Q107172 dbpedia-fa:کرومیت dbpedia-it:Cromite dbpedia-pt:Cromita dbpedia-gl:Cromita dbpedia-fi:Kromiitti dbpedia-el:Χρωμίτης dbpedia-nn:Kromitt dbpedia-cs:Chromit dbpedia-ar:كروميت n30:Хромит dbpedia-sk:Chromit dbpedia-ca:Cromita dbpedia-az:Xromit dbpedia-ru:Хромит dbpedia-tr:Kromit dbpedia-he:כרומיט n38:Chromitas dbpedia-sh:Kromit dbpedia-de:Chromit dbpedia-fr:Chromite dbpedia-ja:クロム鉄鉱 dbpedia-es:Cromita dbpedia-pl:Chromit dbpedia-hu:Kromit n51:Քրոմիտ dbpedia-sl:Kromit freebase:m.02_gwy dbpedia-uk:Хроміт dbpedia-eu:Kromita dbpedia-af:Chromiet dbpedia-nds:Chromit dbpedia-ro:Cromit dbpedia-id:Kromit
dbp:streak
Brown
dbp:strunz
4
dbp:tenacity
Brittle
dbp:twinning
Spinel law on {Ill}
dbp:unitCell
a = 8.344 Å; Z = 8
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dbo:thumbnail
n7:chromium.jpg?width=300
dbp:caption
Chromite from Zimbabwe
dbp:category
dbr:Spinel_group dbr:Oxide_minerals Spinel structural group
dbp:class
H-M symbol: Hexoctahedral
dbp:color
Black to brownish black; brown to brownish black on thin edges in transmitted light
dbp:gravity
4.5
dbp:imagesize
260
dbp:other
Weakly magnetic
dbp:symmetry
Fdm
dbp:system
dbr:Cubic_crystal_system
dbo:abstract
Het mineraal chromiet is een ijzer-chromaat met de chemische formule FeCr2O4. Kromit, (FeCr2O4), är ett dubbeloxidmineral som i rent tillstånd viktmässigt innehåller 46,46 % krom eller 68 % räknat som kromoxid och 24,95 % järn eller 32 % järnoxid räknat som FeO. Kromit förekommer dels insprängt i olika ultrabasiska bergarter, till exempel serpentinit och peridotit, dels i kornig form i kompakta massor och dels i vaskavlagringar. Sammansättningen kan dock variera eftersom järnet ersätts lätt av magnesium (magnesiumkromit MgCr2O4) samt att kromet ersätts av aluminium (hercynit FeAl2O4). Kromit adalah sebuah wujud mineral dari besi kromium oksida. Mineral tersebut memiliki rumus kimia FeCr2O4. Senyawa tersebut adalah sebuah yang masuk . Unsur magnesium dapat menggantikan besi dalam jumlah tertentu karena unsur tersebut membentuk dengan magnesiokromit (MgCr2O4). Unsur aluminium juga dapat diganti dengan (FeAl2O4). Kromit sekarang dipakai untuk membuat baja tahan karat lewat produksi (FeCr), yang merupakan logam paduan besi-kromium. Chromit (Haidinger, 1845), chemický vzorec FeCr2O4, je krychlový minerál. Společně s dalšími minerály patří mezi tzv. spinelidy. Název odráží jeho složení. クロム鉄鉱(くろむてっこう、chromite、クロマイト)は、鉄、マグネシウム、クロムが主成分の酸化鉱物。モース硬度5.5、組成式は (Fe,Mg)Cr2O4 で、磁鉄鉱などと同様にスピネル型結晶構造を取るスピネルグループの鉱物。 色は黒色が基本であるが、茶色がかっている場合もある。 クロム鉄鉱内のマグネシウムの比率は常に一定でなく、鉄よりもマグネシウムが多いと(magnesiochromite,MgCr2O4)になる(両者の固溶体は、俗に「クロムスピネル(chromianspinel)と呼ばれる)。鉄の代わりにアルミニウムが含まれていることもある。鉄分を含むが、磁性は弱いかほとんど無い。 主にかんらん岩や変成岩など岩石の中に存在し、クロムを生成する上で重要な鉱石鉱物となっている。灰クロム柘榴石を伴うことが多い。 Chromite is a crystalline mineral composed primarily of iron(II) oxide and chromium(III) oxide compounds. It can be represented by the chemical formula of FeCr2O4. It is an oxide mineral belonging to the spinel group. The element magnesium can substitute for iron in variable amounts as it forms a solid solution with magnesiochromite (MgCr2O4). A substitution of the element aluminium can also occur, leading to hercynite (FeAl2O4). Chromite today is mined particularly to make stainless steel through the production of ferrochrome (FeCr), which is an iron-chromium alloy. Chromite grains are commonly found in large mafic igneous intrusions such as the Bushveld in South Africa and India. Chromite is iron-black in color with a metallic luster, a dark brown streak and a hardness on the Mohs scale of 5.5. La cromita és un mineral de la classe dels òxids. Va rebre el seu nom l'any 1845 per Wilhelm Haidinger a causa de la seva composició a base de crom. Aquesta espècie va ser anomenada originàriament fer chromate alumine per Louis Nicolas Vauquelin el 1798, el descobridor de l'element crom. Forma part del grup de l'espinel·la de minerals. És dimorf de la xieïta, i isostructural amb la magnesiocromita i la magnetita. Хромі́т, хромистий залізняк — мінерал, що складається з заліза, хрому і кисню; єдина руда для одержання хрому. 铬铁矿是一种矿物,主要成分为铁、镁和铬的氧化物:(Fe, Mg)Cr2O4,是尖晶石的一种。它是唯一可开采的铬矿石,矿物成分较复杂,镁的含量不定,有时也含铝和铁元素。自然界含铬矿物约30种,但具有工业价值的只有铬铁矿,中国常见的有铬铁矿、铝铬铁矿和富铬尖晶石。 铬铁矿难熔,用作材料,也用于制取三氧化二铬、重铬酸钠、重铬酸钾等铬化合物。 铬铁矿的产地主要为巴西和古巴,生产国则主要是印度、伊朗、巴基斯坦、阿曼、津巴布韦、土耳其和南非,共占世界产量的80%,其中南非一国的产量便占40%。铬铁矿主要存在于中国的四川、西藏、甘肃、青海等省份。 铬矿是发展冶金、国防、化工等工业不可缺少的矿产资源,主要用于冶金工业生产不锈钢及各种合金钢、合金,在玻璃、陶瓷、、耐火材料等方面也有广泛用途。包括: * 铸造级:用于大型铸钢件、铸造型砂、钢包引流砂 * 冶金级:用于生产高碳铬铁和低微碳铬铁 * 耐火级/化工级:用于生产镁铬砂、镁铬砖等耐火材料 南非的草原高地复合构造是世界上的铬矿资源储量最丰富的地区,占全世界已知铬储量的76.1%。其中西矿带是以鲁斯腾堡(RUSTENBURG)为中心,而东矿带以斯蒂尔波特(STEELPOORT)和博格斯福德(BUGERSFORT) Ο χρωμίτης (αγγλ. chromite) είναι ορυκτό οξείδιο του σιδήρου και του χρωμίου, του οποίου αποτελεί το κυριότερο μετάλλευμα. Kromita (Fe, Mg)Cr2O4 formula kimikoa duen mineral kromodun, burdinadun eta magnesioduna da. Magnesioa beti ageri da kantitate aldakorretan; aluminioa eta burdina kromoa ordezkatuz ageri daitezke. Espinelaren taldekoa da. Chromit, auch als Chromeisenstein oder Chromeisenerz bekannt, ist ein häufig vorkommendes Mineral aus der Gruppe der Spinelle innerhalb der Mineralklasse der „Oxide und Hydroxide“. Mit der idealisierten chemischen Zusammensetzung Fe2+Cr2O4 ist es chemisch gesehen ein Eisen-Chrom-Oxid. Chromit kristallisiert im kubischen Kristallsystem. Allerdings entwickelt das Mineral nur gelegentlich makroskopische, das heißt mit bloßem Auge sichtbare, Kristalle im Millimeter- bis Zentimeterbereich mit oktaedrischem Habitus oder kubische Kombinationen wie Würfel und Dodekaeder. Meist findet es sich in Form körniger bis massiger Mineral-Aggregate. Chromit ist im Allgemeinen undurchsichtig und von eisenschwarzer Farbe mit einem fettig wirkenden Metallglanz auf den Oberflächen. Dünne Schichten sind allerdings tiefbraun durchscheinend und auch die Strichfarbe ist braun. Mit einer Mohshärte von 5,5, die in etwa der Härte von Fensterglas entspricht, gehört Chromit zu den mittelharten Mineralen. Er zeigt keine Spaltbarkeit, ist jedoch spröde und bricht bei Beanspruchung mit unebenen bis schwach muscheligen Flächen. La cromite è un minerale, appartenente al gruppo degli spinelli, caratterizzato da un elevato contenuto in Cr2O3, in genere superiore al 37%; per contenuti in Cr2O3 significativi ma minori si parla di Cr-spinello. Generalmente la cromite si presenta massiva. Quando sono presenti cristalli, mostrano abito ottaedrico.I cristalli di cromite appartengono al sistema cristallino cubico. Cromita é um óxido duplo de ferro e cromo: ( FeCr2O4 ), contendo 32,1% de FeO e 67,9% de Cr2O3 . É um óxido mineral pertencente ao grupo dos espinélios. O magnésio está presente sempre em quantidades váriáveis como, também, o ferro e o alumínio substituindo o cromo. Portanto, a cromita pode apresentar composição variável , podendo o FeO ser substituído parcialmente pelo MgO e o Cr2O3 ( em torno de 65% ) por Al2O3. É possível estarem presentes Fe2O3 , MnO e ZnO. A cromita é um cristal infusível, de coloração pardo a negro, brilho submetálico, hábito octaédrico, maciço a granular, estrutura cristalina isométrico, cúbico ou monométrico , traço castanho escuro , clivagem ausente, fratura concoidal, com dureza 5,5 , e massa específica 4,5 – 4,8. A cromita é encontrada nos peridotitos e em outras rochas ultramáficas intrusivas e, também, encontrado em rochas metamórficas tais como as serpentinitos. Depósitos de minério de cromita se formam enquanto o magma recente se diferencia. Está geralmente associado com àolivina, magnetita, serpentina e ao corindo . A cromita é o principal mineral do cromo. Utilizado na fabricação de material refratário , vidro , cimento , e na obtenção de cromo metálico. Em 2003 a produção brasileira foi de 405 mil toneladas contendo 161 mil toneladas de Cr2O3. Os principais depósitos são encontrados na Rússia, África do Sul , Turquia, Filipinas e Cuba. Variedade: Magnésiocromita Chromit – minerał z grupy tlenków, zaliczany do grupy spineli chromowych. Nazwa pochodzi od składu chemicznego minerału, którego głównym składnikiem jest chrom; gr. khroma (chroma) = kolor, barwa (W Haidinger – 1845 r.). Minerał pospolity, szeroko rozpowszechniony. Jeden z pierwszych minerałów, które wyodrębniają się w procesie różnicowania magmy. La chromite est une espèce minérale du groupe du spinelle, de formule FeCr2O4 (ou FeO.Cr2O3) avec des traces de magnésium, manganèse, zinc et aluminium. Les rares cristaux peuvent atteindre un centimètre. Elle forme une série avec l’hercynite d'une part et avec la magnésiochromite d'autre part. Хроми́т (хромистый железняк, хромистый шпинель) — минерал хрома. Крайний член изоморфного ряда хромшпинелидов переменного состава магнезиохромит (MgCr2O4) — хромит (FeCr2O4) из класса оксидов. Наряду с другими хромшпинелидами относится к группе (семейству) шпинели. الكروميت هو أكسيد حديد الكروم. وهو معدن أكسيد ينتمي إلى مجموعة الإسبنيل. يمكن أن تكون بديلا عن المغنيسيوم الحديد بكميات متغيره، كما أنها تشكل حلا متينة مع استبدال كروم المغنيسيوم من الألومنيوم. La kromito aŭ kromferŝtono kromfererco estas dura, metala, brunnigra oksida mineralo, kromofera oksido (FeCr2O4), plej grava industria erco de la kromo (kroma enteno 73 %). ĝi kristaliĝas en . Ĝi havas brunan skrapsurfacon, durecon de 5,5 kaj denson de 4,1 ĝis 5,1. Ĝi estas la plej grava membro de la de la . La serio dua natura membro estas la , kiu estas kromoksido (MgCr2O4) la magnezio kaj kromo. La kromito formas ordinare fragilan konglomeraton en peridotitoj, kaj aliaj bazaj magmaj kaj transformiĝintaj ŝtonaroj. Lia malofte formas kristalan enfermaĵon en diamanto. Oni minis kromion unuafoje el serpentino de la , proksime al Baltimore (Marilando, Usono). La plej gravaj kromitminejoj troviĝas en Sudafriko (Transvalo), Rusio (Uralo), Albanio, , Zimbabvo, Turkio, Brazilo, Barato (Sukinda) kaj Finnlando. Kelkaj variaĵoj estas uzitaj kiel gemoj. La cromita es un mineral de composición FeCr2O4 perteneciente al grupo IV (óxidos) según la clasificación de Strunz.Llamado en un principio fer chromate alumine por Louis-Nicolas Vauquelin y Tassaert (1798),​ el nombre de cromita se debe a Wilhelm Karl Ritter von Haidinger (1845) y hace referencia a su contenido de cromo.​
dbp:cleavage
None, parting may develop along {III}
dbp:diaphaneity
Translucent to opaque
dbp:formula
Cr2O4
dbp:fracture
Uneven
dbp:habit
Octahedral rare; massive to granular
dbp:imasymbol
Chr
dbp:luster
Resinous, Greasy, Metallic, Sub-Metallic, Dull
dbp:mohs
5.5
dbp:opticalprop
Isotropic
dbp:refractive
n = 2.08–2.16
gold:hypernym
dbr:Oxide
dbp:wordnet_type
n56:synset-mineral-noun-1
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wikipedia-en:Chromite?oldid=1120751602&ns=0
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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Subject Item
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wikipedia-en:Chromite
foaf:primaryTopic
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