Fluorarrojadite-(KNa) Mineral Data

General Fluorarrojadite-(KNa) Information

Chemical Formula:

KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2

Composition:

Molecular Weight = 2,035.07 gm

Potassium 1.92 % K 2.31 % K₂O

Sodium 4.52 % Na 6.09 % Na₂O

Calcium 1.97 % Ca 2.76 % CaO

Magnesium 2.39 % Mg 3.96 % MgO

Manganese 10.80 % Mn 13.94 % MnO

Aluminum 1.33 % Al 2.51 % Al₂O₃

Iron 19.21 % Fe 24.71 % FeO

Phosphorus 18.26 % P 41.85 % P₂O₅

Hydrogen 0.07 % H 0.66 % H₂O

Oxygen 38.13 % O

Fluorine 1.40 % F 1.40 % F

- % F -0.59 % -O=F₂

______ ______

100.00 % 99.61 % = TOTAL OXIDE

Empirical Formula:

KNa₂CaNa₂Fe²⁺₇Mn²⁺₄Mg₂Al(PO₄)₁₁(PO₃OH)F_1.5(OH)_0.5

IMA Status:

Not Submitted IMA (Dana # Added)

Locality:

(Rapid Creek), Yukon Territory, Canada. Link to MinDat.org Location Data.

Name Origin:

Named as the fluorine analog of arrojadite and site occupancy of the fluorarrojadite structure.

Fluorarrojadite-(KNa) Crystallography

Crystal System:

Monoclinic - Domatic H-M Symbol (m) Space Group: Cc

Optical Properties of Fluorarrojadite-(KNa)

Optical Data:

Calculated Properties of Fluorarrojadite-(KNa)

Fermion Index:

Fermion Index = 0.0066730679
Boson Index = 0.9933269321

Photoelectric:

PE_{Fluorarrojadite-(KNa)}= 10.02 barns/electron
U=PE_{Fluorarrojadite-(KNa)} x r_electron= . barns/cc.

Radioactivity:

GRapi = 26.83 (Gamma Ray American Petroleum Institute Units)
Concentration of Fluorarrojadite-(KNa) per GRapi unit = 3.73 (%)

Estimated Radioactivity from Fluorarrojadite-(KNa) - barely detectable

Fluorarrojadite-(KNa) Classification

Dana Class:

41.07.02b.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.07)where (A B)m (XO4)4 Zq

(41.07.02b)Arrojadite Group (Fluorarrojadite Subgroup) (Al in Al site, F in W site, Fe in M site)

41.07.02b.01 Fluorarrojadite-(KNa)! KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m

41.07.02b.02 Fluorarrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m

41.07.02b.03 Fluorarrojadite-(BaFe)! (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(PO4)11(PO3OH)(F,OH)2 Cc m

Strunz Class:

08.BF.05 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BF -With medium-sized and large cations, (OH, etc.):RO4 < 0.5:1

08.BF.05 Arrojadite! KNa4CaMn4Fe10Al(PO4)12(OH,F)2 Cc m

08.BF.05 Dickinsonite! KNa4Ca(Mn,Fe)14Al(PO4)12(OH)2 Cc m

08.BF.05 Arrojadite-(BaFe)! (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2 Cc m

08.BF.05 Arrojadite-(KFe)! KNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m

08.BF.05 Arrojadite-(NaFe)! NaNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m

08.BF.05 Arrojadite-(SrFe)! SrFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m

08.BF.05 Arrojadite-(KNa)! KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m

08.BF.05 Dickinsonite-(KNa)! KNa4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m

08.BF.05 Arrojadite-(PbFe)! PbFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m

08.BF.05 Fluorarrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m

08.BF.05 Arrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m

08.BF.05 Fluorarrojadite-(KNa)! KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m

08.BF.05 Fluorarrojadite-(BaFe)! (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(PO4)11(PO3OH)(F,OH)2 Cc m

08.BF.05 Ferri-arrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m

08.BF.05 Dickinsonite-(KMnNa)! KNaMnNa3Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m

08.BF.05 Dickinsonite-(KNaNa)! KNaNa4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m

08.BF.05 Dickinsonite-(NaNa)! Na2Na4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m

Other Fluorarrojadite-(KNa) Information

References:

NAME( AmMin, v91, p1266)

See Also:

Links to other databases for Fluorarrojadite-(KNa) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Fluorarrojadite-(KNa)

KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2
Dana No: 41.07.02b.01 Strunz No: 08.BF.05
Locality:

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