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Arrojadite-(KNa) Mineral Data
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General Arrojadite-(KNa) Information
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Chemical Formula: |
KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 |
Composition: |
Molecular Weight = 2,033.01 gm |
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Potassium 1.60 % K 1.92 % K2O |
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Sodium 5.67 % Na 7.64 % Na2O |
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Strontium 0.04 % Sr 0.05 % SrO |
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Lithium 0.00 % Li 0.01 % Li2O |
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Calcium 1.79 % Ca 2.51 % CaO |
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Magnesium 3.22 % Mg 5.33 % MgO |
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Titanium 0.05 % Ti 0.08 % TiO2 |
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Manganese 2.78 % Mn 3.59 % MnO |
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Aluminum 1.38 % Al 2.61 % Al2O3 |
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Zinc 0.03 % Zn 0.04 % ZnO |
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Iron 25.66 % Fe 33.01 % FeO |
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Silicon 0.01 % Si 0.03 % SiO2 |
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Phosphorus 18.27 % P 41.86 % P2O5 |
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Hydrogen 0.15 % H 1.32 % H2O |
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Oxygen 39.33 % O |
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Fluorine 0.03 % F 0.03 % F |
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- %
F -0.01 % -O=F2 |
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______ ______ |
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100.00 % 100.01 % = TOTAL OXIDE |
Empirical Formula: |
K0.83Na5.01Ca0.91Sr0.01Fe2+9.34Mg2.69Mn2+1.03Zn0.01Li0.01Al1.04Ti0.02(OH)1.97F0.03
P11.99Si0.01O47(OH) |
Environment: |
Occurs as coating of open fractures in siderite-rich Lower Cretaceous sandstones of the Rapid Creek area. Arrojadite group |
IMA Status: |
Approved IMA 2005 (Dana # Added) |
Locality: |
Rapid Creek, Yukon Territory, Canada Link to MinDat.org Location Data. |
Name Origin: |
Named after arrojadite and site occupancy of the arrojadite structure. |
Name Pronunciation: |
Arrojadite-(KNa) + Pronunciation |
Synonym: |
IMA2005-047 |
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Arrojadite-(KNa) Image |
Images:
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Arrojadite-(KNa) Crystallography
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Axial Ratios: |
a:b:c =1.6435:1:2.4517 |
Cell Dimensions: |
a = 16.522, b = 10.0529, c = 24.6477, Z = 4; beta = 106.509° V = 3,925.07 Den(Calc)= 3.44 |
Crystal System: |
Monoclinic - Domatic H-M Symbol (m) Space Group: Cc |
X Ray Diffraction: |
By Intensity(I/Io): 3.0498(1), 2.6908(0.713), 5.8614(0.288),2.7933(0.28), 5.0264(0.275), 2.7979(0.249), 2.7774(0.244), |
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Physical Properties of Arrojadite-(KNa)
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Diaphaneity: |
Transparent |
Luster: |
Vitreous (Glassy) |
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Optical Properties of Arrojadite-(KNa)
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Optical Data: |
NCalc= 1.65 - from Gladstone-Dale relationship (KC = 0.1904) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Arrojadite-(KNa)
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Electron Density: |
Bulk Density (Electron Density)=3.34 gm/cc note: Specific Gravity of Arrojadite-(KNa) =3.44 gm/cc. |
Fermion Index: |
Fermion Index = 0.0089836476 Boson Index = 0.9910163524 |
Photoelectric: |
PEArrojadite-(KNa) = 9.92 barns/electron U=PEArrojadite-(KNa) x relectron= 33.17 barns/cc. |
Radioactivity: |
GRapi = 22.39 (Gamma Ray American Petroleum Institute Units)
Concentration of Arrojadite-(KNa) per GRapi unit = 4.47 (%)
Estimated Radioactivity from Arrojadite-(KNa) - barely detectable
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Arrojadite-(KNa) Classification
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Dana Class: |
41.07.02a.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.07)where (A B)m (XO4)4 Zq |
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(41.07.02a)Arrojadite Group (Arrojadite Subgroup) (Al in Al site, OH in W site, Fe in M site) |
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41.07.02a.00 Arrojadite! KNa4CaMn4Fe10Al(PO4)12(OH,F)2 Cc m |
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41.07.02a.01 Arrojadite-(KNa)! KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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41.07.02a.02 Arrojadite-(KFe)! KNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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41.07.02a.03 Arrojadite-(NaFe)! NaNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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41.07.02a.04 Arrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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41.07.02a.05 Arrojadite-(BaFe)! (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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41.07.02a.06 Arrojadite-(SrFe)! SrFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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41.07.02a.07 Arrojadite-(PbFe)! PbFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
Strunz Class: |
08.BF.05 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BF -With medium-sized and large cations, (OH, etc.):RO4 < 0.5:1 |
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08.BF.05 Arrojadite! KNa4CaMn4Fe10Al(PO4)12(OH,F)2 Cc m |
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08.BF.05 Dickinsonite! KNa4Ca(Mn,Fe)14Al(PO4)12(OH)2 Cc m |
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08.BF.05 Arrojadite-(BaFe)! (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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08.BF.05 Arrojadite-(KFe)! KNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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08.BF.05 Arrojadite-(NaFe)! NaNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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08.BF.05 Arrojadite-(SrFe)! SrFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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08.BF.05 Arrojadite-(KNa)! KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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08.BF.05 Dickinsonite-(KNa)! KNa4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m |
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08.BF.05 Arrojadite-(PbFe)! PbFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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08.BF.05 Fluorarrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m |
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08.BF.05 Arrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m |
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08.BF.05 Fluorarrojadite-(KNa)! KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m |
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08.BF.05 Fluorarrojadite-(BaFe)! (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(PO4)11(PO3OH)(F,OH)2 Cc m |
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08.BF.05 Ferri-arrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(F,OH)2 Cc m |
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08.BF.05 Dickinsonite-(KMnNa)! KNaMnNa3Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m |
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08.BF.05 Dickinsonite-(KNaNa)! KNaNa4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m |
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08.BF.05 Dickinsonite-(NaNa)! Na2Na4Ca(Mn,Fe,Mg)13Al(PO4)11(PO4)(OH,F)2 Cc m |
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Other Arrojadite-(KNa) Information
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References: |
NAME( AmMin, v91,1249) PHYS. PROP.(AmMin, v91, p1249) |
See Also: |
Links to other databases for Arrojadite-(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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Print or Cut-and-Paste your Arrojadite-(KNa) Specimen Label here :
Arrojadite-(KNa)
KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2
Dana No: 41.07.02a.01 Strunz No: 08.BF.05
Locality:
Notes:
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