About: Köttigite

An Entity of Type: mineral, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

Köttigite is a rare hydrated zinc arsenate which was discovered in 1849 and named by James Dwight Dana in 1850 in honour of (1824–1892), a German chemist from Schneeberg, Saxony, who made the first chemical analysis of the mineral. It has the formula Zn3(AsO4)2·8H2O and it is a dimorph of , which means that the two minerals have the same formula, but a different structure: köttigite is monoclinic and metaköttigite is triclinic. There are several minerals with similar formulae but with other cations in place of the zinc. Iron forms Fe2+3(AsO4)2·8H2O; cobalt forms the distinctively coloured pinkish purple mineral erythrite Co3(AsO4)2·8H2O and nickel forms annabergite Ni3(AsO4)2·8H2O. Köttigite forms series with all three of these minerals and they are all members of the vivianite group.

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dbo:abstract
  • La köttigita és un mineral de la classe dels fosfats, que pertany al . Rep el nom en honor d'Otto Friedrich Köttig (3 d'abril de 1824 - 21 de febrer de 1892), químic de Schneeberg, Saxònia, qui va fer el primer anàlisi químic. (ca)
  • Köttigit, veraltet auch als Zinkarseniat bekannt, ist ein selten vorkommendes Mineral aus der Mineralklasse der „Phosphate, Arsenate und Vanadate“. Es kristallisiert im monoklinen Kristallsystem mit der chemischen Zusammensetzung Zn3[AsO4]2·8H2O und ist damit chemisch gesehen ein wasserhaltiges Zink-Arsenat. Köttigit entwickelt meist nadelige bis prismatische Kristalle von bis zu 6 cm Länge, kommt aber auch in Form von radialstrahligen bzw. büscheligen Mineral-Aggregaten, faserigen Krusten und derben Massen vor. In reiner Form ist Köttigit farblos und durchsichtig. Durch vielfache Lichtbrechung aufgrund von Gitterbaufehlern oder polykristalliner Ausbildung erscheint er jedoch meist durchscheinend weiß und durch Fremdbeimengungen kann er eine hell karminrote und durch Mischkristallbildung mit (Fe+32[AsO4]2·8H2O) eine graublaue bis graugrüne Farbe annehmen. Die Kristalloberflächen weisen einen wachs- bis fettähnlichen Glanz auf, Spaltflächen schimmern dagegen eher seidenähnlich. (de)
  • Köttigita fosfato motako minerala da eta vivianita taldearen kidea da. (eu)
  • Köttigite is a rare hydrated zinc arsenate which was discovered in 1849 and named by James Dwight Dana in 1850 in honour of (1824–1892), a German chemist from Schneeberg, Saxony, who made the first chemical analysis of the mineral. It has the formula Zn3(AsO4)2·8H2O and it is a dimorph of , which means that the two minerals have the same formula, but a different structure: köttigite is monoclinic and metaköttigite is triclinic. There are several minerals with similar formulae but with other cations in place of the zinc. Iron forms Fe2+3(AsO4)2·8H2O; cobalt forms the distinctively coloured pinkish purple mineral erythrite Co3(AsO4)2·8H2O and nickel forms annabergite Ni3(AsO4)2·8H2O. Köttigite forms series with all three of these minerals and they are all members of the vivianite group. The Vivianite Group is a group of monoclinic phosphates and arsenates with divalent cations. The group members are annabergite, , , , erythrite, , , , , and vivianite. (en)
  • La Köttigite è un minerale costituito da arseniato idrato di zinco. (it)
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  • 42761881 (xsd:integer)
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  • 11591 (xsd:nonNegativeInteger)
dbo:wikiPageRevisionID
  • 1123875056 (xsd:integer)
dbo:wikiPageWikiLink
dbp:birefringence
  • δ = 0.049 (en)
dbp:boxwidth
  • 24 (xsd:integer)
dbp:category
  • Arsenate mineral (en)
dbp:class
  • Prismatic (en)
dbp:cleavage
  • Perfect on {010} (en)
dbp:colour
  • Colourless, pink, red, red-orange or brown; light rose-pink in transmitted light (en)
dbp:dana
  • 40.300000 (xsd:double)
dbp:diaphaneity
  • Translucent (en)
dbp:fracture
  • Fibrous fracture yields a silky lustre (en)
dbp:gravity
  • 3.330000 (xsd:double)
dbp:habit
  • Crystals prismatic [001] and flattened {010}. Also in crusts with a crystalline surface and fibrous structure (en)
dbp:imagesize
  • 260 (xsd:integer)
dbp:imasymbol
  • Köt (en)
dbp:lustre
  • Resinous or waxy, silky on fracture (en)
dbp:mohs
  • to 3 (en)
dbp:molweight
  • 618.130000 (xsd:double)
dbp:name
  • Köttigite (en)
dbp:opticalprop
  • Biaxial (en)
dbp:other
  • Not fluorescent (en)
dbp:pleochroism
  • Visible. X, Y = colourless, Z = pale red. (en)
dbp:refractive
  • nα = 1.622 (en)
  • nβ = 1.638 (en)
  • nγ = 1.671 (en)
dbp:solubility
  • Soluble in acids (en)
dbp:streak
  • Reddish-white to white (en)
dbp:strunz
  • 8 (xsd:integer)
  • VII/C.13-90 (en)
dbp:symmetry
  • C2/m (en)
dbp:system
dbp:tenacity
  • Flexible (en)
dbp:wikiPageUsesTemplate
dcterms:subject
gold:hypernym
rdf:type
rdfs:comment
  • La köttigita és un mineral de la classe dels fosfats, que pertany al . Rep el nom en honor d'Otto Friedrich Köttig (3 d'abril de 1824 - 21 de febrer de 1892), químic de Schneeberg, Saxònia, qui va fer el primer anàlisi químic. (ca)
  • Köttigita fosfato motako minerala da eta vivianita taldearen kidea da. (eu)
  • La Köttigite è un minerale costituito da arseniato idrato di zinco. (it)
  • Köttigit, veraltet auch als Zinkarseniat bekannt, ist ein selten vorkommendes Mineral aus der Mineralklasse der „Phosphate, Arsenate und Vanadate“. Es kristallisiert im monoklinen Kristallsystem mit der chemischen Zusammensetzung Zn3[AsO4]2·8H2O und ist damit chemisch gesehen ein wasserhaltiges Zink-Arsenat. (de)
  • Köttigite is a rare hydrated zinc arsenate which was discovered in 1849 and named by James Dwight Dana in 1850 in honour of (1824–1892), a German chemist from Schneeberg, Saxony, who made the first chemical analysis of the mineral. It has the formula Zn3(AsO4)2·8H2O and it is a dimorph of , which means that the two minerals have the same formula, but a different structure: köttigite is monoclinic and metaköttigite is triclinic. There are several minerals with similar formulae but with other cations in place of the zinc. Iron forms Fe2+3(AsO4)2·8H2O; cobalt forms the distinctively coloured pinkish purple mineral erythrite Co3(AsO4)2·8H2O and nickel forms annabergite Ni3(AsO4)2·8H2O. Köttigite forms series with all three of these minerals and they are all members of the vivianite group. (en)
rdfs:label
  • Köttigita (ca)
  • Köttigit (de)
  • Köttigita (eu)
  • Köttigite (it)
  • Köttigite (en)
owl:sameAs
prov:wasDerivedFrom
foaf:depiction
foaf:isPrimaryTopicOf
foaf:name
  • Köttigite (en)
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