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Ferro-nybøite

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Formula:
NaNa2(Fe32+Al2)(AlSi7)O22(OH)2
The nybøite group minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and C(Al+Fe3++2Ti) > 1.5 apfu

Ferro-nybøite is defined with

A position: Na dominant
C2+ position: Fe dominant
C3+ position: Al dominant
W position: (OH) dominant
System:
Monoclinic
Colour:
Blue-grey
Hardness:
5 - 6
Name:
For its relationship to Nybøite


Classification of Ferro-nybøite

Hypothetical Mineral
8/F.08-60

8 : Silicates
F : Inosilicates (chain and band) double chains [Si2O6]4-
08 : Amphibole group, Glaucophane - Riebeckite - Kozulite series
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Physical Properties of Ferro-nybøite

Vitreous
Colour:
Blue-grey
Hardness (Mohs):
5 - 6
Cleavage:
Perfect
on {110}

Crystallography of Ferro-nybøite

Crystal System:
Monoclinic

Chemical Properties of Ferro-nybøite

Formula:
NaNa2(Fe32+Al2)(AlSi7)O22(OH)2

The nybøite group minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and C(Al+Fe3++2Ti) > 1.5 apfu

Ferro-nybøite is defined with

A position: Na dominant
C2+ position: Fe dominant
C3+ position: Al dominant
W position: (OH) dominant
Essential elements:
All elements listed in formula:

Relationship of Ferro-nybøite to other Species

Other Members of Group:
Ferri-fluoro-nybøiteNaNa2(Mg3Fe23+)(AlSi7O22)F2
Ferri-nybøiteNaNa2(Mg3Fe23+](AlSi7O22)(OH)2
Ferro-ferri-fluoro-nybøiteNaNa2(Fe32+Fe23+)(AlSi7O22)F2
Ferro-ferri-nybøiteNaNa2[(Fe32+,Mg)Fe23+](AlSi7O22)(OH)2
Ferro-fluoro-nybøiteNaNa2(Fe32+Al2)(AlSi7O22)F2
Fluoro-nybøiteNaNa2(Mg3Al2)(AlSi7O22)(F,OH)2
NybøiteNaNa2(Mg3Al2)(AlSi7O22)(OH)2
8/F.08-10Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
8/F.08-20Ferro-glaucophane◻[Na2][Fe32+Al2]Si8O22(OH)2
8/F.08-40Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
8/F.08-50Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
8/F.08-55NybøiteNaNa2(Mg3Al2)(AlSi7O22)(OH)2
8/F.08-57Fluoro-nybøiteNaNa2(Mg3Al2)(AlSi7O22)(F,OH)2
8/F.08-70EckermanniteNaNa2(Mg4Al}Si8O22(OH)2
8/F.08-80Ferro-eckermanniteNaNa2(Fe2+,4Al)Si8O22(OH)2
8/F.08-82Fluoro-pedriziteNaLi2(Mg2Al2Li)(Si8O22)F2
8/F.08-82bFerro-ferri-pedrizite[Na][Li2][Fe22+Fe23+Li]Si8O22(OH)2
8/F.08-83Ferri-pedrizite[Na][Li2][Mg2Fe23+Li]Si8O22(OH)2
8/F.08-85Ferri-leakeite[Na][Na2][Mg2Fe23+Li]Si8O22(OH)2
8/F.08-85bFerro-ferri-leakeite[Na][Na2][Fe22+Fe23+Li]Si8O22(OH)2
8/F.08-86Ferro-ferri-fluoro-leakeiteNa(Na2)(Fe22+Fe23+Li)(Si8O22)(F)2
8/F.08-86bPotassic-ferri-leakeite[K][Na2][Mg2Fe23+Li]Si8O22(OH)2
8/F.08-87Potassic-mangani-leakeite[(Na,K)][Na2][Mg2Mn23+Li]Si8O22(OH)2
8/F.08-88Mangano-mangani-ungarettiiteNaNa2(Mn22+Mn33+)(Si8O22)O2
8/F.08-89Mangani-obertiiteNa(Na2)(Mg3Mn3+Ti)(Si8O22)O2
8/F.08-90Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
8/F.08-92Magnesio-fluoro-arfvedsonite[Na][Na2][Mg4Fe3+][Si8O22](F,OH)2
8/F.08-100Arfvedsonite[Na][Na2][Fe42+Fe3+]Si8O22(OH)2
8/F.08-102Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2
8/F.08-103Potassic-magnesio-fluoro-arfvedsonite[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]
8/F.08-105Potassic-arfvedsonite[(K,Na)][Na2][Fe42+Fe3+]Si8O22(OH)2
8/F.08-110Mangano-ferri-eckermannite[Na][Na2][Mn42+(Fe3+)]Si8O22(OH)2

Other Names for Ferro-nybøite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Ferro-nybøite

Reference List:
Hawthorne, Frank C., and Roberta Oberti (2006) On the classification of amphiboles. Canadian Mineralogist: 44(1): 1-21.

Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048

Internet Links for Ferro-nybøite

Localities for Ferro-nybøite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth et al. unpublished data.
Germany
 
  • Baden-Württemberg
    • Odenwald
      • Eberbach
        • Katzenbuckel
Athena Mineralogy
Greenland
 
  • Kujalleq
    • Narsaq
      • Igaliku (Igaliko)
Schönenberger, J., & Markl, G. (2008). The magmatic and fluid evolution of the Motzfeldt intrusion in South Greenland: insights into the formation of Agpaitic and Miaskitic rocks. Journal of Petrology, 49(9), 1549-1577.
Italy
 
  • Piedmont
    • Cuneo Province
      • Varaita Valley
        • Brossasco
          • Gilba Valley
Piccoli, G.C., Maletto, G., Bosio, P., Lombardo, B. (2007). Minerali del Piemonte e della Valle d'Aosta. Associazione Amici del Museo "F. Eusebio" Alba, Ed., Alba (Cuneo) 607 pp
T. Hirajima and R. Compagnoni : "Petrology of a jadeite-quartz-almandine-phengite fels with retrograde ferro-nyböite from the Dora-Maira Massif, Western Alps", Eur. Journ. Mineral., 1993, 5, pp 943-955
Mineral and/or Locality  
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