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Arrojadite-(BaFe) Mineral Data

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General Arrojadite-(BaFe) Information

Help on Chemical  Formula: Chemical Formula: (Ba,K,Pb)Na3(Ca,Sr)(Fe++,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2
Help on Composition: Composition: Molecular Weight = 2,242.07 gm
   Potassium    0.17 %  K     0.21 % K2O
   Barium       4.90 %  Ba    5.47 % BaO
   Sodium       3.08 %  Na    4.15 % Na2O
   Strontium    0.78 %  Sr    0.92 % SrO
   Calcium      1.43 %  Ca    2.00 % CaO
   Magnesium    6.18 %  Mg   10.25 % MgO
   Manganese    0.49 %  Mn    0.63 % MnO
   Aluminum     1.20 %  Al    2.27 % Al2O3
   Iron        20.18 %  Fe   25.96 % FeO
   Phosphorus  16.58 %  P    37.99 % P2O5
   Hydrogen     0.09 %  H     0.80 % H2O
   Lead         9.24 %  Pb    9.96 % PbO
   Oxygen      35.68 %  O
              ______        ______ 
              100.00 %      100.61 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Ba0.8K0.1PbCa0.8Sr0.2Fe2+8.1Mg5.7Mn2+0.2Al(PO4)12(OH)2
Help on Environment: Environment: In a phengitic quartzite. The species name sigimundite is replaced by the name arrojadite-(BaFe)
Help on IMA Status: IMA Status: Approved IMA 1996 (Dana # Added)
Help on Locality: Locality: Near Madesimo, Spluga Valley, Central Alps, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Originally for Pietro Sigismund (1874-1962), renamed arrojadite-(BaFe) in 2005 by the IMA.
Help on Name Pronunciation: Name Pronunciation: Arrojadite-(BaFe) + Pronunciation Say ARROJADITE-(BAFE)
Help on Synonym: Synonym: IMA1994-033
  IMA2005 No 05-D

Arrojadite-(BaFe) Image

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Comments: Small grain of Arrojadite-(BaFe).
Location: Big Fish River, Yukon, Canada. Scale: Not Given.
© Sergey Vasiliev / Systematic Mineralogy

Arrojadite-(BaFe) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.6506:1:2.4604
Help on Cell Dimensions: Cell Dimensions: a = 16.394, b = 9.932, c = 24.437, Z = 4; beta = 105.78° V = 3,829.00 Den(Calc)= 3.89
Help on Crystal System: Crystal System: Monoclinic - Domatic H-M Symbol (m) Space Group: Cc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.01(1), 3.181(0.51), 2.678(0.42),

Physical Properties of Arrojadite-(BaFe)

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Grayish green.
Help on Density: Density: 3.54
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: white

Optical Properties of Arrojadite-(BaFe)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.08 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1671,KPDmeas= 0.1836,KC= 0.1816
Ncalc = 1.64 - 1.71
Help on Optical Data: Optical Data: Biaxial (+/-), b=1.65

Calculated Properties of Arrojadite-(BaFe)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.36 gm/cc
note: Specific Gravity of Arrojadite-(BaFe) =3.54 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEArrojadite-(BaFe) = 178.53 barns/electron
U=PEArrojadite-(BaFe) x relectron= 600.02 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2.40 (Gamma Ray American Petroleum Institute Units)
Concentration of Arrojadite-(BaFe) per GRapi unit = 41.73 (%)

Estimated Radioactivity from Arrojadite-(BaFe) - barely detectable


Arrojadite-(BaFe) Classification

Help on  Dana Class: Dana Class: 41.07.02a.05 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.07)where (A B)m (XO4)4 Zq
  (41.07.02a)Arrojadite Group (Arrojadite Subgroup) (Al in Al site, OH in W site, Fe in M site)
41.07.02a.00 Arrojadite! KNa4CaMn4Fe10Al(PO4)12(OH,F)2 Cc m
41.07.02a.01 Arrojadite-(KNa)! KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m
41.07.02a.02 Arrojadite-(KFe)! KNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m
41.07.02a.03 Arrojadite-(NaFe)! NaNa2CaNa2(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m
41.07.02a.04 Arrojadite-(BaNa)! BaFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m
41.07.02a.05 Arrojadite-(BaFe)! (Ba,K,Pb)Na3(Ca,Sr)(Fe,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2 Cc m
41.07.02a.06 Arrojadite-(SrFe)! SrFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m
41.07.02a.07 Arrojadite-(PbFe)! PbFeNa2Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Cc m
Help on  Strunz Class: 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 Arrojadite-(BaFe) Information

Help on References: References: NAME( MinRec, Vol. 28, No. 3) PHYS. PROP.(Am.Min.,Vol.82,p432,1997) OPTIC PROP.(Am.Min.,Vol.82,p432,1997)
Help on See Also: See Also: Links to other databases for Arrojadite-(BaFe) :
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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Dana No: 41.07.02a.05 Strunz No: 08.BF.05





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