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Ferronigerite-2N1S Mineral Data

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General Ferronigerite-2N1S Information

Help on Chemical  Formula: Chemical Formula: (Zn,Mg,Fe++)(Sn,Zn)2(Al,Fe+++)12O22(OH)2
Help on Composition: Composition: Molecular Weight = 1,041.00 gm
   Magnesium   0.70 %  Mg    1.16 % MgO
   Aluminum   27.21 %  Al   51.42 % Al2O3
   Zinc        3.77 %  Zn    4.69 % ZnO
   Iron       10.73 %  Fe    2.76 % FeO / 12.27 % Fe2O3
   Tin        20.53 %  Sn   26.06 % SnO2
   Hydrogen    0.17 %  H     1.56 % H2O
   Oxygen     36.89 %  O
             ______        ______ 
             100.00 %       99.92 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+0.4Zn0.4Mg0.3Fe3+0.1Sn1.8Zn0.2Al10.5Fe3+1.5O22.2(OH)1.8
Help on Environment: Environment: Tin-bearing pegmatitic rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1947
Help on Locality: Locality: Egbe district, Nigeria, Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality and FERRO (Iron). (S=Spinel, N=Nolanite Layers).
Help on Synonym: Synonym: IMA2001-A

Ferronigerite-2N1S Image

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Comments: Hexagonal crystal of ferronigerite-2N1S with an inset back-light image showing the deep brown tranparency.
Location: Stiepelmann Mine, Arandis, Swakopmund District, Erongo Region, Namibia. Scale: Crystal Size 1.0 x 0.8 x 0.1 cm.
© Rob Lavinsky

Ferronigerite-2N1S Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.42307
Help on Cell Dimensions: Cell Dimensions: a = 5.72, c = 13.86, Z = 1; V = 392.72 Den(Calc)= 4.40
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: P 3m or P 3m1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.42(1), 2.85(0.9), 1.55(0.6),

Physical Properties of Ferronigerite-2N1S

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Amber yellow, Golden brown, Brown, Red.
Help on Density: Density: 4.51
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Hexagonal - Six-sided crystal shape in cross-section or habit.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 8.5 - Chrysoberyl
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Magnetism: Magnetism: Weakly magnetic
Help on Streak: Streak: grayish white

Optical Properties of Ferronigerite-2N1S

Help on Dichroism (e): Dichroism (e): brownish yellow or yellow brown.
Help on Dichroism (w): Dichroism (w): pale brownish yellow or yellow.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.119 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.097 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.183,KPDmeas= 0.1785,KC= 0.2026
Ncalc = 1.89 - 1.91
Help on Optical Data: Optical Data: Uniaxial (+), w=1.8, e=1.81, bire=0.0100.

Calculated Properties of Ferronigerite-2N1S

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.18 gm/cc
note: Specific Gravity of Ferronigerite-2N1S =4.40 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEFerronigerite-2N1S = 65.60 barns/electron
U=PEFerronigerite-2N1S x rElectron Density= 273.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ferronigerite-2N1S is Not Radioactive

Ferronigerite-2N1S Classification

Help on  Dana Class: Dana Class: (07)Multiple Oxides
  (07.11)as titano-oxides with [4] and [6] substitutions
  (07.11.08)Nigerite Group (Sn>Ti) Ferronigerite-2N1S (Zn,Mg,Fe)(Sn,Zn)2(Al,Fe)12O22(OH)2 P 3m or P 3m1 3 2/m Ferronigerite-6N6S! (Fe,Zn)4Sn2(Al,Fe)15O30(OH)2 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 04.FC.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FC -Hydroxides with OH, without H2O; corner-sharing octahedra
04.FC.20 Ferronigerite-6N6S! (Fe,Zn)4Sn2(Al,Fe)15O30(OH)2 R 3m 3 2/m
04.FC.20 Ferronigerite-2N1S (Zn,Mg,Fe)(Sn,Zn)2(Al,Fe)12O22(OH)2 P 3m or P 3m1 3 2/m
04.FC.20 Magnesionigerite-6N6S! (Mg,Zn,Fe,Al)4(Sn,Fe)2Al10O22(OH)2 Unk Trig
04.FC.20 Magnesionigerite-2N1S (Mg,Zn,Fe,Al)4(Sn,Fe)2Al10O22(OH)2 P 3m 3 2/m

Other Ferronigerite-2N1S Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Ferronigerite-2N1S :
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: Strunz No: 04.FC.20





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