| dbo:abstract |
Cliftonite is a natural form of graphite that occurs as small octahedral inclusions in iron-containing meteorites. It typically accompanies kamacite, and more rarely schreibersite, cohenite or plessite. Cliftonite was first considered to be a new form of carbon, then a pseudomorph of graphite after diamond, and finally reassigned to a pseudomorph of graphite after kamacite. Cliftonite is typically observed in minerals that experienced high pressures. It can also be synthesized by annealing an Fe-Ni-C alloy at ambient pressure for several hundred hours. The annealing is carried out in two stages: first a mixture of cohenite and kamacite is formed in air at ca. 950 °C; it is then partly converted to cliftonite in vacuum at ca. 550 °C. The Campo del Cielo region of Argentina is noted for a crater field containing a group of distinctive iron meteorites. (en) |
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| dbo:wikiPageWikiLink |
dbr:Campo_del_Cielo dbr:Carbon dbr:Schreibersite dbc:Allotropes_of_carbon dbr:Pseudomorph dbc:Native_element_minerals dbr:Graphite dbr:Hexagonal_crystal_system dbr:Iron_meteorite dbr:Argentina dbc:Hexagonal_minerals dbc:Minerals_in_space_group_194 dbr:Kamacite dbr:Cohenite dbr:Mineral dbr:Octahedron dbr:Plessite dbr:H-M_symbol |
| dbp:category |
dbr:Mineral |
| dbp:class |
dbr:H-M_symbol Dihexagonal dipyramidal (en) |
| dbp:color |
Gray (en) |
| dbp:formula |
dbr:Carbon |
| dbp:habit |
Octahedra, cubes, cubo-octahedra, cubo-dodecahedra; isolated or aggregated, ca. 20 μm in size (en) |
| dbp:luster |
Sub-metallic (en) |
| dbp:mohs |
1 (xsd:integer) |
| dbp:name |
Cliftonite (en) |
| dbp:streak |
gray (en) |
| dbp:symmetry |
P63/mmc (en) |
| dbp:system |
dbr:Hexagonal_crystal_system |
| dbp:wikiPageUsesTemplate |
dbt:Reflist dbt:Infobox_mineral |
| dcterms:subject |
dbc:Allotropes_of_carbon dbc:Native_element_minerals dbc:Hexagonal_minerals dbc:Minerals_in_space_group_194 |
| gold:hypernym |
dbr:Form |
| rdf:type |
owl:Thing dul:ChemicalObject dbo:ChemicalSubstance wikidata:Q7946 dbo:Mineral yago:WikicatCarbonForms yago:WikicatNativeElementMinerals yago:WikicatSulfateMinerals yago:Abstraction100002137 yago:Form106290637 yago:LanguageUnit106284225 yago:Material114580897 yago:Matter100020827 yago:Mineral114662574 yago:Part113809207 yago:PhysicalEntity100001930 yago:Relation100031921 yago:WikicatHexagonalMinerals yago:Word106286395 yago:Substance100019613 |
| rdfs:comment |
Cliftonite is a natural form of graphite that occurs as small octahedral inclusions in iron-containing meteorites. It typically accompanies kamacite, and more rarely schreibersite, cohenite or plessite. The Campo del Cielo region of Argentina is noted for a crater field containing a group of distinctive iron meteorites. (en) |
| rdfs:label |
Cliftonite (en) |
| owl:sameAs |
freebase:Cliftonite wikidata:Cliftonite https://global.dbpedia.org/id/8L36B yago-res:Cliftonite |
| prov:wasDerivedFrom |
wikipedia-en:Cliftonite?oldid=1072372445&ns=0 |
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wikipedia-en:Cliftonite |
| foaf:name |
Cliftonite (en) |
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dbr:Graphite dbr:Kosmochlor |
| is foaf:primaryTopic of |
wikipedia-en:Cliftonite |