Ferronigerite-6N6S Mineral Data

General Ferronigerite-6N6S Information

Chemical Formula:

(Fe++,Zn)4Sn2(Al,Fe+++)15O30(OH)2

Composition:

Molecular Weight = 1,419.10 gm

Calcium 0.85 % Ca 1.19 % CaO

Manganese 0.39 % Mn 0.50 % MnO

Aluminum 27.95 % Al 52.81 % Al₂O₃

Zinc 6.45 % Zn 8.03 % ZnO

Iron 11.02 % Fe 13.67 % FeO / 0.56 % Fe₂O₃

Silicon 0.40 % Si 0.85 % SiO₂

Tin 16.73 % Sn 21.24 % SnO₂

Hydrogen 0.14 % H 1.27 % H₂O

Oxygen 36.08 % O

______ ______

100.00 % 100.11 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺_2.7Zn_1.4Mn²⁺_0.1Sn₂Ca_0.3Al_14.7Si_0.2Fe³⁺_0.1O₃₀(OH)₂

Environment:

Pegmatitic rocks.

IMA Status:

Approved IMA 2002 (Dana # Added)

Locality:

Nigeria, Africa. Link to MinDat.org Location Data.

Name Origin:

Named after its locality and FERRO (Iron). (S=Spinel, N=Nolanite Layers).

Synonym:

IMA2001-A

Nigerite-24R

Ferronigerite-6N6S Image

Images:

Ferronigerite-6N6S

Comments: Brownish ferronigerite-6N6S in matrix.
Location: Rosendal tantalum deposit, Rosendal pegmatite, KemiÃ¶ (Kimito) Island, Lansi-Suomen Laani, Finland. Scale: Picture Size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferronigerite-6N6S Crystallography

Axial Ratios:

a:c = 1:9.70331

Cell Dimensions:

a = 5.73, c = 55.6, Z = 3; V = 1,580.94 Den(Calc)= 4.47

Crystal System:

Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3m

Crystal Structure:

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Grey I E , Gatehouse B M , American Mineralogist , 64 (1979) p.1255-1264, The crystal structure of nigerite-24R, Locality: Mt Garnet, northern Queensland, Australia

View Additional jPOWD Structure files for Ferronigerite-6N6S
[1] [2]

Physical Properties of Ferronigerite-6N6S

Cleavage:

None

Color:

Brown, Reddish brown.

Density:

4.51

Diaphaneity:

Opaque

Fracture:

Hackly - Jagged, torn surfaces, (e.g. fractured metals).

Habit:

Platy - Sheet forms (e.g. micas).

Hardness:

8.5 - Chrysoberyl

Luster:

Vitreous - Greasy

Streak:

grayish white

Optical Properties of Ferronigerite-6N6S

Optical Data:

Uniaxial (?).

NCalc= 1.85 - from Gladstone-Dale relationship (KC = 0.1894) where Ncalc=Dcalc*KC+1
NCalc= 1.85 - from Gladstone-Dale relationship (KC = 0.1894) where Ncalc=Dmeas*KC+1

Calculated Properties of Ferronigerite-6N6S

Electron Density:

Bulk Density (Electron Density)=4.25 gm/cc
note: Specific Gravity of Ferronigerite-6N6S =4.47 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_{Ferronigerite-6N6S}= 56.09 barns/electron
U=PE_{Ferronigerite-6N6S} x rElectron Density= 238.57 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ferronigerite-6N6S is Not Radioactive

Ferronigerite-6N6S Classification

Dana Class:

07.11.08.02 (07)Multiple Oxides

(07.11)as titano-oxides with [4] and [6] substitutions

(07.11.08)Nigerite Group (Sn>Ti)

07.11.08.01 Ferronigerite-2N1S (Zn,Mg,Fe)(Sn,Zn)2(Al,Fe)12O22(OH)2 P 3m or P 3m1 3 2/m

07.11.08.02 Ferronigerite-6N6S! (Fe,Zn)4Sn2(Al,Fe)15O30(OH)2 R 3m 3 2/m

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-6N6S Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Duda&Rejl90) OPTIC PROP.(AntBidBlaNic3)

See Also:

Links to other databases for Ferronigerite-6N6S :
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 Ferronigerite-6N6S Specimen Label here :

Ferronigerite-6N6S

(Fe++,Zn)4Sn2(Al,Fe+++)15O30(OH)2
Dana No: 07.11.08.02 Strunz No: 04.FC.20
Locality:

Notes: