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Potassic-magnesio-fluoro-arfvedsonite

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About Potassic-magnesio-fluoro-arfvedsoniteHide

Johan August Arfwedson
Formula:
[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]
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.

Potassic-magnesio-fluoro-arfvedsonite is defined with

A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: F dominant
Name:
Originally named potassium fluor-magnesio-arfvedsonite, but according to the 2012 amphibole nomenclature guidelines, the name is now potassic-magnesio-fluoro-arfvedsonite.
This page provides mineralogical data about Potassic-magnesio-fluoro-arfvedsonite.


Classification of Potassic-magnesio-fluoro-arfvedsoniteHide

Approved
Notes:
Renamed by the IMA
Approval Year:
1985
First Published:
1987
Approval History:
1985: Approved by CNMMN (IMA 1985-023) as potassium fluor-magnesio-arfvedsonite (following the nomenclature of Leake 1978). Data was given in Hogarth et al. (1987), but not published as a new species.
2006: Renamed by IMA (2006, special procedure) (re-introduced in abstract form by Hogarth 2006), as fluoro-potassic-magnesio-arfvedsonite.
2012: Renamed by IMA, special procedure, as potassic-magnesio-fluoro-arfvedsonite.
8/F.08-103
9.DE.25

9 : SILICATES (Germanates)
D : Inosilicates
E : Inosilicates with 2-periodic double chains, Si4O11; Clinoamphiboles

Physical Properties of Potassic-magnesio-fluoro-arfvedsoniteHide

Cleavage:
Perfect
on {110}
Parting:
On {001}

Chemical Properties of Potassic-magnesio-fluoro-arfvedsoniteHide

Formula:
[(K,Na)][Na2][Mg4Fe3+][Si8O22][(F,OH)2]

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.

Potassic-magnesio-fluoro-arfvedsonite is defined with

A position: K dominant
C2+ position: Mg dominant
C3+ position: Fe dominant
W position: F dominant
IMA Formula:
KNa2(Mg4Fe3+)Si8O22F2

Crystallography of Potassic-magnesio-fluoro-arfvedsoniteHide

Morphology:
Elongated crystals with striations parallel to c
Twinning:
Common on TL, as simple or lamellar (ll57A) on {100}

Type Occurrence of Potassic-magnesio-fluoro-arfvedsoniteHide

Geological Setting of Type Material:
Narrow dolomite-amphibole veins cutting Mesoproterozoic alkali feldspar trachyte
Reference:
Hogarth, D.D. (2006) Fluoro-potassic-magnesio-arfvedsonite, KNa2Mg5Si8O22F2, from the Outaouais region, Québec, Canada. The Canadian Mineralogist: 44: 289.

Synonyms of Potassic-magnesio-fluoro-arfvedsoniteHide

Relationship of Potassic-magnesio-fluoro-arfvedsonite to other SpeciesHide

Other Members of this group:
Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
Fluoro-arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22F2
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

Related Minerals - Nickel-Strunz GroupingHide

9.DE.Clino-suenoite□{Mn2+2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Anthophyllite☐{Mg2}{Mg5}(Si8O22)(OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
9.DE.05Cummingtonite☐{Mg2}{Mg5}(Si8O22)(OH)2Mon.
9.DE.05Clino-holmquistite Root Name☐{Li2}{Z2+3Z3+2}(Si8O22)(OH,F,Cl)2Mon.
9.DE.05Grunerite☐{Fe2+2}{Fe2+5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.05Permanganogrunerite☐{Mn2+2}{Mn2+5}(Si8O22)(OH)2Mon.
9.DE.05Ferro-fluoro-pedrizite{Na}{Li2}{Fe2Al2Li}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.05Ferri-fluoro-leakeite{Na}{Na2}{Mg2Fe3+2Li}(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Ferri-tschermakite☐{Ca2}{Mg3Fe3+2}(Al2Si6O22)(OH)2Mon.
9.DE.10Ferro-actinolite☐{Ca2}{Fe2+5}(Si8O22)(OH)2Mon.
9.DE.10Ferro-hornblende☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2Mon.
9.DE.10Ferro-tschermakite☐{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.10Joesmithite{Pb}{Ca2}{Mg3Fe3+2}(Be2Si6O22)(OH)2Mon.
9.DE.10Magnesio-hornblende☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2Mon.
9.DE.10Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Tschermakite☐(Ca2)(Mg3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.10CannilloiteCa(Ca2)(Mg4Al)(Al3Si5O22)(OH)2Mon.
9.DE.10Fluoro-cannilloite{Ca}{Ca2}{Mg4Al}(Al3Si5O22)(F,OH)2Mon.
9.DE.10Parvo-manganotremolite☐{CaMn2+}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.10Fluoro-tremolite☐{Ca2}{Mg5}(Si8O22)F2Mon. 2/m : B2/m
9.DE.10Potassic-fluoro-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.15Edenite{Na}{Ca2}{Mg5}(AlSi7O22)(OH)2Mon.
9.DE.15Ferro-edenite{Na}{Ca2}{Fe2+5}(AlSi7O22)(OH)2Mon.
9.DE.15Ferro-kaersutite{Na}{Ca2}{Fe2+3AlTi}(Al2Si6O22)O2Mon.
9.DE.15Ferro-pargasite{Na}{Ca2}{Fe2+4Al}(Al2Si6O22)(OH)2Mon.
9.DE.15Hastingsite{Na}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(OH)2Mon.
9.DE.15Kaersutite{Na}{Ca2}{Mg3AlTi}(Al2Si6O22)O2 Mon.
9.DE.15Magnesio-hastingsite{Na}{Ca2}{Mg4Fe3+}(Al2Si6O22)(OH)2Mon.
9.DE.15Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2Mon.
9.DE.15Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2Mon.
9.DE.15Fluoro-edenite{Na}{Ca2}{Mg5}(AlSi7O22)(F,OH)2Mon. 2/m : P2/m
9.DE.15Potassic-ferro-ferri-sadanagaite{K}{Ca2}{Fe2+3Fe3+2}(Al3Si5O22)(OH)2Mon.
9.DE.15Potassic-sadanagaite{K}{Ca2}{Mg3Al2}(Al3Si5O22)(OH)2Mon.
9.DE.15Potassic-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2Mon.
9.DE.15Potassic-ferro-sadanagaite{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2Mon.
9.DE.15Magnesio-fluoro-hastingsite{Na}{Ca2}{Mg4Fe3+}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.15Potassic-fluoro-hastingsite{K}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(F,OH)2Mon. 2/m : B2/m
9.DE.15Potassic-chloro-hastingsite{K}{Ca2}{Fe2+4Fe3+}(Al2Si6O22)(Cl,OH)2Mon. 2/m : B2/m
9.DE.15Fluoro-pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(F,OH)2Mon. 2/m : B2/m
9.DE.15Parvo-mangano-edenite{Na}{CaMn2+}{Mg5}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-chloro-pargasite{K}{Ca2}{Mg4Al}(Al2Si6O22)(Cl,OH)2
9.DE.15Potassic-ferro-chloro-edenite{K}{Ca2}{Fe2+5}(AlSi7O22)(Cl,OH)2
9.DE.15Potassic-magnesio-hastingsite{K}{Ca2}{Mg4Fe3+}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.15Potassic-ferro-pargasite{K}{Ca2}{Fe2+4Al}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.15Chromio-pargasite{Na}{Ca2}{Mg4Cr3+}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-taramiteNa(CaNa)(Fe2+3Al2)(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Barroisite☐{CaNa}{Mg3Al2}(AlSi7O22)(OH)2Mon.
9.DE.20Ferro-ferri-barroisite☐(CaNa)(Fe2+3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-winchite☐[CaNa][Fe2+4(Fe3+,Al)]Si8O22(OH)2
9.DE.20Ferri-barroisite☐(CaNa)(Mg3Fe3+2)(AlSi7O22)(OH)2
9.DE.20Ferro-ferri-taramiteNa(CaNa)(Fe2+3Fe3+2)(Al2Si6O22)(OH)2
9.DE.20Ferro-ferri-katophoriteNa(NaCa)(Fe2+4Fe3+)(Si7Al)O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-barroisite☐{CaNa}{Fe2+3Al2}(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.20Ferro-richterite{Na}{CaNa}{Fe2+5}(Si8O22)(OH)2Mon.
9.DE.20Ferro-winchite ☐{CaNa}{Fe2+4Al}(Si8O22)(OH)2Mon.
9.DE.20Ferro-katophorite{Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
9.DE.20Ferri-taramiteNa(CaNa)(Mg3Fe3+2)(Al2Si6O22)(OH)2Mon.
9.DE.20Magnesiotaramite{Na}{CaNa}{Mg3AlFe3+}(Al2Si6O22)(OH)2Mon.
9.DE.20Richterite{Na}{NaCa}{Mg5}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.20Winchite☐{CaNa}{Mg4Al}(Si8O22)(OH)2Mon. 2/m
9.DE.20Taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-richterite{Na}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon. 2/m
9.DE.20Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2Mon. 2/m : B2/m
9.DE.20Potassic-fluoro-richterite{K}{CaNa}{Mg5}(Si8O22)(F,OH)2Mon.
9.DE.20Potassic-richterite{K}{CaNa}{Mg5}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Ferri-ghoseite☐[Mn2+Na][Mg4Fe3+]Si8O22(OH)2Mon. 2/m
9.DE.20Ferri-winchite☐[CaNa][Mg4(Fe3+,Al)]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.20Fluoro-taramite{Na}{CaNa}{Mg3Al2}(Al2Si6O22)F2Mon. 2/m : B2/m
9.DE.25Arfvedsonite[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25EckermanniteNaNa2(Mg4Al}Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-eckermanniteNaNa2(Fe2+4Al)Si8O22(OH)2Mon.
9.DE.25Ferro-glaucophane◻[Na2][Fe2+3Al2]Si8O22(OH)2Mon.
9.DE.25Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2Mon.
9.DE.25Potassic-mangani-leakeite[(Na,K)][Na2][Mg2Mn3+2Li]Si8O22(OH)2Mon.
9.DE.25Mangano-ferri-eckermannite{Na}{Na2}{Mn2+4Fe3+}Si8O22(OH)2Mon.
9.DE.25Ferri-leakeite[Na][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Magnesio-riebeckite◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25NybøiteNaNa2(Mg3Al2)(AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.25Riebeckite◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangano-mangani-ungarettiiteNaNa2(Mn2+2Mn3+3)(Si8O22)O2Mon.
9.DE.25Ferro-ferri-nybøiteNaNa2[(Fe2+3,Mg)Fe3+2](AlSi7O22)(OH)2Mon. 2/m : B2/m
9.DE.25Clino-ferro-ferri-holmquistite◻{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferri-nybøiteNaNa2(Mg3Fe3+2](AlSi7O22)(OH)2Mon.
9.DE.25Ferro-ferri-leakeite[Na][Na2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Ferro-ferri-fluoro-leakeiteNa(Na2)(Fe2+2Fe3+2Li)(Si8O22)(F)2Mon.
9.DE.25Sodic-ferri-clinoferroholmquistiteNa0.5{Li2}{Fe2+3Fe3+2}(Si8O22)(OH)2Mon.
9.DE.25Magnesio-fluoro-arfvedsonite[Na][Na2][Mg4Fe3+][Si8O22](F,OH)2Mon.
9.DE.25Ferri-pedrizite[Na][Li2][Mg2Fe3+2Li]Si8O22(OH)2Mon.
9.DE.25Potassic-ferri-leakeite[K][Na2][Mg2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Fluoro-nybøiteNaNa2(Mg3Al2)(AlSi7O22)(F,OH)2Mon. 2/m : B2/m
9.DE.25Mangani-dellaventuraite{Na}{Na2}{MgMn3+2LiTi4+}Si8O22O2Mon. 2/m : B2/m
9.DE.25Fluoro-pedriziteNaLi2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Potassic-arfvedsonite[(K,Na)][Na2][Fe2+4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Mangani-obertiiteNa(Na2)(Mg3Mn3+Ti)(Si8O22)O2Mon. 2/m : B2/m
9.DE.25Ferro-ferri-pedrizite[Na][Li2][Fe2+2Fe3+2Li]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Potassic-magnesio-arfvedsonite[K][Na2][Mg4Fe3+]Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25PedriziteNaLi2(LiMg2Al2)(Si8O22)(OH)2Mon. 2/m : B2/m
9.DE.25Ferro-pedriziteNaLi2(Fe2+2Al2Li)Si8O22(OH)2Mon. 2/m : B2/m
9.DE.25Fluoro-leakeiteNaNa2(Mg2Al2Li)(Si8O22)F2Mon. 2/m : B2/m
9.DE.25Ferro-ferri-obertiiteNaNa2(Fe2+3Fe3+Ti)Si8O22O2Mon. 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 Potassic-magnesio-fluoro-arfvedsoniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hogarth, D.D., Chao, G.Y., Townsend, M.G. (1987) Potassium- and fluorine-rich amphiboles from the Gatineau area, Quebec. The Canadian Mineralogist: 25: 739-753.
Hogarth, D.D. (2006) Fluoro-potassic-magnesio-arfvedsonite, KNa2Mg5Si8O22F2, from the Outaouais region, Québec, Canada. The Canadian Mineralogist: 44: 289.
Hawthorne, F.C., Oberti, R. (2006) On the classification of amphiboles. The Canadian Mineralogist: 44: 1-21.
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.

Internet Links for Potassic-magnesio-fluoro-arfvedsoniteHide

Localities for Potassic-magnesio-fluoro-arfvedsoniteHide

ⓘ - 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
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Les Lacs-du-Témiscamingue
http://rruff.info/general=kipawa/display=default/R060915
    • Outaouais
      • Les Collines-de-l'Outaouais RCM
Hogarth, D.D. (2006): Fluoro-potassic-magnesio-arfvedsonite, KNa2Mg5Si8O22F2, from the Outaouais region, Québec, Canada. Canadian Mineralogist: 44: 289-289.
        • Val-des-Monts
HOGARTH, D.D. & LAPOINTE, P. (1984): Amphibole and pyroxene development in fenite from the Gatineau area, Quebec. Canadian Mineralogist 22, 281-295. HOGARTH, D.D., CHAO, G.Y. & TOWNSEND, M.G. (1987): Potassium and fluorine-rich amphiboles from the Gatineau area, Quebec. Canadian Mineralogist 25, 739-753. HOGARTH, D.D. (2006): Fluoro-potassic-magnesio-arfvedsonite, KNa2Mg5Si8O22F2, from the Outaouais region, Quebec, Canada. Canadian Mineralogist 44, 289. HOGARTH, D.D. (2010): Fluoro-potassic-magnesio-arfvedsonite, KNa2Mg5Si8O22F2, from the Outaouais region, Quebec, Canada: Erratum Canadian Mineralogist 48, 432.
Morocco
 
  • Dakhla-Oued Ed-Dahab Region
Bea, F., Montero, P., Haissen, F., & El Archi, A. (2013). 2.46 Ga kalsilite and nepheline syenites from the Awsard pluton, Reguibat Rise of the West African Craton, Morocco. Generation of extremely K-rich magmas at the Archean–Proterozoic transition. Precambrian Research, 224, 242-254.
Mozambique
 
  • Cabo Delgado Province
    • Xixano
Oberti R, Boiocchi M, Hawthorne F. C., Robinson P (2010): Crystal structure and crystal chemistry of fluoro-potassic-magnesio-arfvedsonite from Monte Metocha, Xixano region, Mozambique, and discussion of the holotype from Quebec, Canada. Mineralogical Magazine. 74, 951-960
Norway
 
  • Troms
    • Tromsø
Kullerud, K., Zozulya, D., Erambert, M., Ravna, E.J.K. (2014): Solid solution between potassic alkali amphiboles from the silica-rich Kvaløya lamproite, West Troms Basement Complex, northern Norway. European Journal of Mineralogy: 25(6): 935-945
        • Ersfjorden
Kullerud, K.,Zozulya, D.R., Bergh, S.G.,Hansen, H.and Ravna E, J.K. (2011): Geochemistry and tectonic setting of a lamproite dyke in Kvaløya, North Norway. Lithos. 126, 278-289; Kullerud, K., Zozulya, D. & Ravna, E. J. K. (2015): Geochemistry, mineralogy and tectonic setting of the Kvaløya lamproite. Norsk Mineralsymposium 2015, 57-64.
Schingaro, E., Kullerud, K., Lacalamita, M., Mesto, E., Scordari, F., Zozulya, D., Erambert, M., Ravna, E.J.K. (2014): Yangzhumingite and phlogopite from the Kvaløya lamproite (North Norway): Structure, composition and origin. Lithos, 209, 1-13.
USA
 
  • California
    • San Bernardino Co.
      • Clark Mts (Clark Mountain Range)
        • Mountain Pass District
          • Mountain Pass
Gunnar Färber
Mineral and/or Locality  
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