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Ferrogedrite is an amphibole mineral with the complex chemical formula of ☐Fe2+2(Fe2+3Al2)(Si6Al2)O22(OH)2. It is sodium and calcium poor, making it part of the magnesium-iron-manganese-lithium amphibole subgroup. Defined as less than 1.00 apfu (atoms per formula unit) of Na + Ca and consisting of greater than 1.00 apfu of (Mg, Fe2+, Mn2+, Li) separating it from the calcic-sodic amphiboles. It is related to anthophyllite amphibole and gedrite through coupled substitution of (Al, Fe3+) for (Mg, Fe2+, Mn) and Al for Si. and determined by the content of silicon in the standard cell.

AttributesValues
rdf:type
rdfs:label
  • Ferrogedrita (ca)
  • Ferrogedrite (en)
  • Ferrogedrita (eu)
  • Ferro-gedrite (it)
rdfs:comment
  • La ferrogedrita és un mineral de la classe dels silicats, que pertany al grup del nom arrel gedrita. Rep el nom per la seva relació amb la gedrita. (ca)
  • Ferrogedrite is an amphibole mineral with the complex chemical formula of ☐Fe2+2(Fe2+3Al2)(Si6Al2)O22(OH)2. It is sodium and calcium poor, making it part of the magnesium-iron-manganese-lithium amphibole subgroup. Defined as less than 1.00 apfu (atoms per formula unit) of Na + Ca and consisting of greater than 1.00 apfu of (Mg, Fe2+, Mn2+, Li) separating it from the calcic-sodic amphiboles. It is related to anthophyllite amphibole and gedrite through coupled substitution of (Al, Fe3+) for (Mg, Fe2+, Mn) and Al for Si. and determined by the content of silicon in the standard cell. (en)
  • Ferro-gedrita silikato motako minerala da eta gedrite root name taldearen kidea da. (eu)
  • La ferro-gedrite è un minerale, un anfibolo appartenente al sottogruppo degli anfiboli di magnesio-ferro-manganese in base alla revisione della nomenclatura degli anfiboli del 2012, precedentemente era classificato come appartenente al gruppo degli anfiboli Mg-Fe-Mn-Li. Il nome originale del minerale è ferrogedrite, attribuito in relazione al contenuto di ferro ed all'analogia con la gedrite, in seguito è stata rinominata ferro-gedrite. (it)
foaf:name
  • Ferrogedrite (en)
name
  • Ferrogedrite (en)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Ferro-gedrite_&_Sekaninaite.jpg
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
sameAs
streak
  • Gray white (en)
strunz
tenacity
  • Brittle (en)
unit cell
  • Z = 4 (en)
  • a = 18.52 Å, b = 17.94 Å, c = 5.31 Å; (en)
dbp:wikiPageUsesTemplate
thumbnail
boxwidth
caption
  • Needles of ferro-gedrite on cleavage plane of sekaninaite. (en)
category
class
color
  • Pale greenish-gray to brown (en)
gravity
symmetry
  • Pnma (en)
system
2V
  • Measured: 82° (en)
has abstract
  • La ferrogedrita és un mineral de la classe dels silicats, que pertany al grup del nom arrel gedrita. Rep el nom per la seva relació amb la gedrita. (ca)
  • Ferrogedrite is an amphibole mineral with the complex chemical formula of ☐Fe2+2(Fe2+3Al2)(Si6Al2)O22(OH)2. It is sodium and calcium poor, making it part of the magnesium-iron-manganese-lithium amphibole subgroup. Defined as less than 1.00 apfu (atoms per formula unit) of Na + Ca and consisting of greater than 1.00 apfu of (Mg, Fe2+, Mn2+, Li) separating it from the calcic-sodic amphiboles. It is related to anthophyllite amphibole and gedrite through coupled substitution of (Al, Fe3+) for (Mg, Fe2+, Mn) and Al for Si. and determined by the content of silicon in the standard cell. (en)
  • Ferro-gedrita silikato motako minerala da eta gedrite root name taldearen kidea da. (eu)
  • La ferro-gedrite è un minerale, un anfibolo appartenente al sottogruppo degli anfiboli di magnesio-ferro-manganese in base alla revisione della nomenclatura degli anfiboli del 2012, precedentemente era classificato come appartenente al gruppo degli anfiboli Mg-Fe-Mn-Li. Il nome originale del minerale è ferrogedrite, attribuito in relazione al contenuto di ferro ed all'analogia con la gedrite, in seguito è stata rinominata ferro-gedrite. (it)
birefringence
  • δ = 0.019 - 0.028 (en)
cleavage
  • Perfect on {210}, with 54° and 126° intersections (en)
diaphaneity
  • Transparent to translucent (en)
dispersion
  • r < v (en)
formula
  • ☐Fe2+2O222 (en)
habit
  • Crystals prismatic to bladed; fibrous (en)
luster
  • Vitreous (en)
mohs
opticalprop
  • Biaxial (en)
pleochroism
  • X = pale green; Y = brownish green; (en)
  • Z = greenish blue (en)
refractive
  • nα = 1.642 - 1.694 (en)
  • nβ = 1.649 - 1.710 (en)
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