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Greifensteinite is beryllium phosphate mineral with formula: Ca2Fe2+5Be4(PO4)6(OH)4·6H2O. It is the Fe2+ dominant member of the group. It crystallizes in the monoclinic crystal system and typically forms prismatic dark olive green crystals. It was first described in Germany at Greifenstein Rocks, Ehrenfriedersdorf, and was named for the location. At the type locality, it occurs within a lithium-rich pegmatite in miarolitic cavities. It was approved by the International Mineralogical Association in 2002.

AttributesValues
rdf:type
rdfs:label
  • Greifensteinita (ca)
  • Greifensteinit (de)
  • Greifensteinite (en)
  • Greifensteinita (eu)
  • Greifensteinite (it)
rdfs:comment
  • La greifensteinita és un mineral de la classe dels fosfats que pertany al . Rep el nom de Greifenstein Rocks, a Alemanya, la seva localitat tipus. (ca)
  • Greifensteinite is beryllium phosphate mineral with formula: Ca2Fe2+5Be4(PO4)6(OH)4·6H2O. It is the Fe2+ dominant member of the group. It crystallizes in the monoclinic crystal system and typically forms prismatic dark olive green crystals. It was first described in Germany at Greifenstein Rocks, Ehrenfriedersdorf, and was named for the location. At the type locality, it occurs within a lithium-rich pegmatite in miarolitic cavities. It was approved by the International Mineralogical Association in 2002. (en)
  • Greifensteinita fosfato motako minerala da eta roscherite taldearen kidea da. (eu)
  • La greifensteinite è un minerale. (it)
  • Greifensteinit ist ein selten vorkommendes Mineral aus der Mineralklasse der „Phosphate, Arsenate und Vanadate“. Es kristallisiert im monoklinen Kristallsystem mit der idealisierten, chemischen Zusammensetzung Ca2Be4Fe2+5(PO4)6(OH)4·6H2O, ist also chemisch gesehen ein wasserhaltiges Calcium-Beryllium-Eisen-Phosphat mit zusätzlichen Hydroxidionen. Greifensteinit ist das Eisen-Analogon zu (Ca2Mn2+5Be4(PO4)6(OH)4·6H2O) und Zanazziit (Ca2Be4Mg5(PO4)6(OH)4·6H2O). (de)
foaf:name
  • Greifensteinite (en)
name
  • Greifensteinite (en)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Greifensteinite-MA1277056257.jpg
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
Link from a Wikipage to an external page
sameAs
streak
  • White, greenish (en)
strunz
tenacity
  • brittle (en)
unit cell
  • a = 15.903, b = 11.885 (en)
  • c = 6.677 [Å]; β = 94.68°; Z = 2 (en)
dbp:wikiPageUsesTemplate
thumbnail
caption
  • Greifensteinite (en)
category
class
  • Prismatic (en)
color
  • Yellow green, olive green, light brown (en)
gravity
imagesize
symmetry
  • C2/c (en)
system
2V
has abstract
  • La greifensteinita és un mineral de la classe dels fosfats que pertany al . Rep el nom de Greifenstein Rocks, a Alemanya, la seva localitat tipus. (ca)
  • Greifensteinit ist ein selten vorkommendes Mineral aus der Mineralklasse der „Phosphate, Arsenate und Vanadate“. Es kristallisiert im monoklinen Kristallsystem mit der idealisierten, chemischen Zusammensetzung Ca2Be4Fe2+5(PO4)6(OH)4·6H2O, ist also chemisch gesehen ein wasserhaltiges Calcium-Beryllium-Eisen-Phosphat mit zusätzlichen Hydroxidionen. Greifensteinit ist das Eisen-Analogon zu (Ca2Mn2+5Be4(PO4)6(OH)4·6H2O) und Zanazziit (Ca2Be4Mg5(PO4)6(OH)4·6H2O). Das Mineral ist durchsichtig bis durchscheinend und entwickelt nur kleine, prismatische Kristalle von dunkel-olivgrüner Farbe, die meist in radialstrahligen Aggregaten angeordnet sind. (de)
  • Greifensteinite is beryllium phosphate mineral with formula: Ca2Fe2+5Be4(PO4)6(OH)4·6H2O. It is the Fe2+ dominant member of the group. It crystallizes in the monoclinic crystal system and typically forms prismatic dark olive green crystals. It was first described in Germany at Greifenstein Rocks, Ehrenfriedersdorf, and was named for the location. At the type locality, it occurs within a lithium-rich pegmatite in miarolitic cavities. It was approved by the International Mineralogical Association in 2002. (en)
  • Greifensteinita fosfato motako minerala da eta roscherite taldearen kidea da. (eu)
  • La greifensteinite è un minerale. (it)
birefringence
cleavage
  • Good on {100} (en)
dana
diaphaneity
  • Transparent to translucent (en)
formula
  • Ca2Fe2+5Be464·6H2O (en)
fracture
  • Uneven (en)
habit
  • Prismatic (en)
IMAsymbol
  • Gfs (en)
luster
  • Vitreous (en)
mohs
opticalprop
  • Biaxial (en)
refractive
  • nα: 1.624 (en)
  • nβ: 1.634 (en)
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