Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Marcasite> ?p ?o }
- Marcasite abstract "The mineral marcasite, sometimes called white iron pyrite, is iron sulfide (FeS2) with orthorhombic crystal structure. It is physically and crystallographically distinct from pyrite, which is iron sulfide with cubic crystal structure. Both structures do have in common that they contain the disulfide S22− ion having a short bonding distance between the sulfur atoms. The structures differ in how these di-anions are arranged around the Fe2+ cations. Marcasite is lighter and more brittle than pyrite. Specimens of marcasite often crumble and break up due to the unstable crystal structure.On fresh surfaces it is pale yellow to almost white and has a bright metallic luster. It tarnishes to a yellowish or brownish color and gives a black streak. It is a brittle material that cannot be scratched with a knife. The thin, flat, tabular crystals, when joined in groups, are called "cockscombs." In marcasite jewellery, pyrite used as a gemstone is termed "marcasite". That is, marcasite jewellery is made from pyrite not from marcasite. In the late medieval and early modern eras the word "marcasite" meant both pyrite and marcasite (and iron sulfides in general). The narrower, modern scientific definition for marcasite as orthorhombic iron sulfide dates from 1845. The jewellery sense for the word pre-dates this 1845 scientific redefinition. Marcasite in the scientific sense is not used as a gem due to its brittleness.".
- Marcasite thumbnail MarcassiteII.jpg?width=300.
- Marcasite wikiPageExternalLink pyrite6.htm.
- Marcasite wikiPageID "1094182".
- Marcasite wikiPageLength "5810".
- Marcasite wikiPageOutDegree "44".
- Marcasite wikiPageRevisionID "644621375".
- Marcasite wikiPageWikiLink Calcite.
- Marcasite wikiPageWikiLink Category:Alchemical_substances.
- Marcasite wikiPageWikiLink Category:Iron_minerals.
- Marcasite wikiPageWikiLink Category:Orthorhombic_minerals.
- Marcasite wikiPageWikiLink Category:Pyrite_group.
- Marcasite wikiPageWikiLink Category:Sulfide_minerals.
- Marcasite wikiPageWikiLink Chalcopyrite.
- Marcasite wikiPageWikiLink Chalk.
- Marcasite wikiPageWikiLink Coal.
- Marcasite wikiPageWikiLink Crystal_structure.
- Marcasite wikiPageWikiLink Cubic_crystal_system.
- Marcasite wikiPageWikiLink Dolomite.
- Marcasite wikiPageWikiLink Dover.
- Marcasite wikiPageWikiLink England.
- Marcasite wikiPageWikiLink Fluorite.
- Marcasite wikiPageWikiLink Galena.
- Marcasite wikiPageWikiLink Gemstone.
- Marcasite wikiPageWikiLink Hydrothermal.
- Marcasite wikiPageWikiLink Hydrothermal_circulation.
- Marcasite wikiPageWikiLink Iron.
- Marcasite wikiPageWikiLink Iron(II)_sulfate.
- Marcasite wikiPageWikiLink Iron_sulfide.
- Marcasite wikiPageWikiLink Kent.
- Marcasite wikiPageWikiLink Limestone.
- Marcasite wikiPageWikiLink Lustre_(mineralogy).
- Marcasite wikiPageWikiLink Marcasite_jewellery.
- Marcasite wikiPageWikiLink Melanterite.
- Marcasite wikiPageWikiLink Mineral.
- Marcasite wikiPageWikiLink Orthorhombic.
- Marcasite wikiPageWikiLink Orthorhombic_crystal_structure.
- Marcasite wikiPageWikiLink Orthorhombic_crystal_system.
- Marcasite wikiPageWikiLink Pyrite.
- Marcasite wikiPageWikiLink Pyrrhotite.
- Marcasite wikiPageWikiLink Sedimentary_rock.
- Marcasite wikiPageWikiLink Shale.
- Marcasite wikiPageWikiLink Sphalerite.
- Marcasite wikiPageWikiLink Sulfide.
- Marcasite wikiPageWikiLink Sulfide_mineral.
- Marcasite wikiPageWikiLink Sulfide_minerals.
- Marcasite wikiPageWikiLink Sulfur.
- Marcasite wikiPageWikiLink Sulfuric_acid.
- Marcasite wikiPageWikiLink Vein_(geology).
- Marcasite wikiPageWikiLink File:Marcasite-40471.jpg.
- Marcasite wikiPageWikiLink File:MarcasiteGeode.jpg.
- Marcasite wikiPageWikiLinkText "Marcasite".
- Marcasite wikiPageWikiLinkText "marcasite".
- Marcasite wikiPageWikiLinkText "marquesset".
- Marcasite wikiPageWikiLinkText "pyrite decay".
- Marcasite wikiPageWikiLinkText "pyrite disease".
- Marcasite caption "Marcasite with tarnish".
- Marcasite category Sulfide_mineral.
- Marcasite category Sulfide_minerals.
- Marcasite cleavage "Cleavage: {101}, rather distinct; {110} in traces".
- Marcasite color "Tin-white on fresh surface, pale bronze-yellow, darkening on exposure, iridescent tarnish".
- Marcasite diaphaneity "Opaque".
- Marcasite formula "FeS2".
- Marcasite fracture "Irregular/Uneven".
- Marcasite gravity "4.875".
- Marcasite habit "Crystals typically tabular on {010}, curved faces common; stalactitic, reniform, massive; cockscomb and spearhead shapes due to twinning on {101}.".
- Marcasite hasPhotoCollection Marcasite.
- Marcasite luster "Metallic".
- Marcasite mohs "6".
- Marcasite molweight "119.98".
- Marcasite name "Marcasite".
- Marcasite pleochroism "[100] creamy white; [010] light yellowish white; [001] white with rose-brown tint. Anisotropism: Very strong, yellow through pale green to dark green".
- Marcasite streak "Dark-grey to black.".
- Marcasite strunz "2".
- Marcasite symmetry "Orthorhombic 2/m 2/m 2/m".
- Marcasite system "Orthorhombic, Pnnm".
- Marcasite tenacity "Brittle".
- Marcasite twinning "Common and repeated on {101}; less common on {011}.".
- Marcasite unitCell "a = 4.436 Å, b = 5.414 Å, c = 3.381 Å; Z = 2".
- Marcasite wikiPageUsesTemplate Template:About.
- Marcasite wikiPageUsesTemplate Template:Commons_category.
- Marcasite wikiPageUsesTemplate Template:Infobox_mineral.
- Marcasite wikiPageUsesTemplate Template:Reflist.
- Marcasite subject Category:Alchemical_substances.
- Marcasite subject Category:Iron_minerals.
- Marcasite subject Category:Orthorhombic_minerals.
- Marcasite subject Category:Pyrite_group.
- Marcasite subject Category:Sulfide_minerals.
- Marcasite hypernym Sulfide.
- Marcasite type ChemicalSubstance.
- Marcasite type Mineral.
- Marcasite type Substance.
- Marcasite type ChemicalObject.
- Marcasite type Thing.
- Marcasite type Q7946.
- Marcasite comment "The mineral marcasite, sometimes called white iron pyrite, is iron sulfide (FeS2) with orthorhombic crystal structure. It is physically and crystallographically distinct from pyrite, which is iron sulfide with cubic crystal structure. Both structures do have in common that they contain the disulfide S22− ion having a short bonding distance between the sulfur atoms. The structures differ in how these di-anions are arranged around the Fe2+ cations.".
- Marcasite label "Marcasite".
- Marcasite sameAs Марказіт.
- Marcasite sameAs Marcassita.
- Marcasite sameAs Markazit.