Dickinsonite-(KNa) Mineral Data

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General Dickinsonite-(KNa) Information

Chemical Formula:

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

Composition:

Molecular Weight = 2,160.41 gm

Potassium 1.81 % K 2.18 % K₂O

Sodium 4.26 % Na 5.74 % Na₂O

Manganese 27.97 % Mn 36.12 % MnO

Aluminum 1.25 % Al 2.36 % Al₂O₃

Iron 10.34 % Fe 13.30 % FeO

Phosphorus 17.20 % P 39.42 % P₂O₅

Hydrogen 0.07 % H 0.63 % H₂O

Oxygen 36.66 % O

Fluorine 0.44 % F 0.44 % F

- % F -0.19 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

KNaMn²⁺Na₃Mn²⁺₇Fe²⁺₄Mn²⁺₃Al(PO₄)₁₁(PO₄)(OH)_1.5F_0.5

Environment:

Arrojadite group

IMA Status:

Approved IMA 2005 (Dana # Added)

Locality:

Branchville, Fairfield Co., Connecticut, USA Link to MinDat.org Location Data.

Name Origin:

Named after dickinsonite and site occupancy of the arrojadite-dickensonite structure.

Name Pronunciation:

Dickinsonite-(KNa) + Pronunciation

Synonym:

Dickinsonite

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Dickinsonite-(KNa) Crystallography

Crystal System:

Monoclinic - DomaticH-M Symbol (m) Space Group: Cc

Optical Properties of Dickinsonite-(KNa)

Optical Data:

Calculated Properties of Dickinsonite-(KNa)

Fermion Index:

Fermion Index = 0.0023703302
Boson Index = 0.9976296698

Photoelectric:

PE_{Dickinsonite-(KNa)}= 11.45 barns/electron
U=PE_{Dickinsonite-(KNa)} x r_electron= . barns/cc.

Radioactivity:

GRapi = 25.05 (Gamma Ray American Petroleum Institute Units)
Concentration of Dickinsonite-(KNa) per GRapi unit = 3.99 (%)

Estimated Radioactivity from Dickinsonite-(KNa) - barely detectable

Dickinsonite-(KNa) Classification

Dana Class:

41.07.02d.03 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

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

(41.07.02d)Arrojadite Group (Ferri-arrojadite Subgroup) (Fe in Al site, OH in W site, Fe in M site)

41.07.02d.00 Dickinsonite? KNa4Ca(Mn,Fe)14Al(PO4)12(OH)2 Cc m

41.07.02d.01 Dickinsonite-(KMnNa)! KNaMnNa3Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m

41.07.02d.02 Dickinsonite-(KNaNa)! KNaNa4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m

41.07.02d.03 Dickinsonite-(KNa)! KNa4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m

41.07.02d.04 Dickinsonite-(NaNa)! Na2Na4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)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 Dickinsonite-(KNa) Information

References:

NAME( AmMin, v91, p1266)

See Also:

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

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Print or Cut-and-Paste your Dickinsonite-(KNa) Specimen Label here :

Dickinsonite-(KNa)

KNa4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2
Dana No: 41.07.02d.03 Strunz No: 08.BF.05
Locality:

Notes: