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Fluoro-arfvedsonite

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About Fluoro-arfvedsoniteHide

Formula:
[Na][Na2][Fe2+4Fe3+]Si8O22F2
The arfvedsonite group minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu with Fe as the dominant element in the C3+ position.

Fluoro-arfvedsonite is defined with

A position: Na dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: F dominant
Colour:
black
Lustre:
Vitreous
This page provides mineralogical data about Fluoro-arfvedsonite.


Classification of Fluoro-arfvedsoniteHide

Notes:
Intermediate member of a solid-solution series

Pronounciation of Fluoro-arfvedsoniteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Fluoro-arfvedsoniteHide

Vitreous
Transparency:
Translucent
Colour:
black
Streak:
light bluish-grey
Cleavage:
Perfect
in two directions under 120 degrees

Chemical Properties of Fluoro-arfvedsoniteHide

Formula:
[Na][Na2][Fe2+4Fe3+]Si8O22F2

The arfvedsonite group minerals are sodium amphiboles defined with A(Na+K+2Ca)> 0.5 apfu and 0.5 apfu < C(Al+Fe3++2Ti) < 1.5 apfu with Fe as the dominant element in the C3+ position.

Fluoro-arfvedsonite is defined with

A position: Na dominant
C2+ position: Fe dominant
C3+ position: Fe dominant
W position: F dominant

Relationship of Fluoro-arfvedsonite to other SpeciesHide

Other Members of this group:
Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2Mon. 2/m : B2/m
Magnesio-fluoro-arfvedsonite[Na][Na2][Mg4Fe3+][Si8O22](F,OH)2Mon.
Potassic-arfvedsonite[(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
Potassic-magnesio-fluoro-arfvedsonite[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]Mon. 2/m : B2/m

Other InformationHide

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 Fluoro-arfvedsoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
- Hawthorne, F.C., Oberti, R., Harlow, G.E., Maresch, W.V., Martin, R.F., Schumacher, J.C., Welch, M.D. (2012) Nomenclature of the amphibole supergroup. American Mineralogist: 97: 2031-2048.
- Sharygin V.V., Zubkova N.V., Pekov I.V. e.a. (2016) Lithium-containing Na–Fe-amphibole from cryolite rocks of the Katugin rare-metal deposit (Transbaikalia, Russia): chemical composition and crystal structure, - Russian Geology and Geophysics, v.57, p. 1191-1203.

Internet Links for Fluoro-arfvedsoniteHide

Localities for Fluoro-arfvedsoniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
Horváth et al. (2019): Mont Saint-Hilaire: History, Geology, Mineralogy. Canadian Mineralogist Special Publication 14 (in press).
Russia
 
  • Zabaykalsky Krai
    • Chitinskaya Oblast
Sharygin, V. V., & Vladykin, N. V. (2014). Mineralogy of cryolite rocks from the Katugin massif, Transbaikalia, Russia. Abstract Book of 30th International Conference on “Ore Potential of Alkaline, Kimberlite and Carbonatite Magmatism,” Antalya, Turkey, 166-168.
Sweden
 
  • Värmland County
    • Filipstad
Gunnar Färber
 
矿物 and/or 产地  
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