Ferronigerite-6N6S Mineral Data

Ferronigerite-6N6S Mineral Data

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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

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

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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

Diaphaniety:

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 (?).

Calculated Properties of Ferronigerite-6N6S

Electron Density:

r_electron=4.25 gm/cc
note: r_{Ferronigerite-6N6S}=4.47 gm/cc.

Fermion Index

Fermion Index = 0.03315
Boson Index = 0.96685

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ferronigerite-6N6S is Not Radioactive

Ferronigerite-6N6S Classification

Dana Class:

7.11.8.2 (7)Multiple Oxides

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

(7.11.8)Nigerite Group (Sn>Ti)

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

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

Strunz Class:

IV/C.07-50* IV - Oxides

IV/C - Oxides with metal : oxygen = 2:3 (M2O3 and related compounds)

IV/C.07 - Högbomite - Mengxianminite series

IV/C.07-10* Magnesiohogbomite-2N2S (Al,Fe,Fe,Mg,Ti,Zn)11O15(OH) P 6₃mc 6mm

IV/C.07-10** Magnesiohogbomite-2N3S (Mg,Fe)1.4Ti0.3Al4O8 P 6₃mc 6mm

IV/C.07-10 Magnesiohogbomite-6N6S (Mg,Fe)1.4Ti0.3Al4O8 R 3m 3 2/m

IV/C.07-15 Zincohogbomite-2N2S! (Zn,Fe)(2-2x)(Ti)xAl4O8 P 6₃mc 6mm

IV/C.07-17 Ferrohogbomite-2N2S! (Fe,Zn,Mg,Al)6Al14(Ti,Fe)2O30(OH)2 P 6₃mc 6mm

IV/C.07-20 Freudenbergite Na2Fe2Ti6O16 C 2/m 2/m

IV/C.07-30 Kamiokite Fe2Mo3O8 P 6₃mc 6mm

IV/C.07-40 Nolanite (V,Fe,Fe,Ti)10O14(OH)2 P 6₃mc 6mm

IV/C.07-42 Rinmanite! (Zn,Mn)2Sb2Mg2Fe4O14(OH)2 P 6₃mc 6mm

IV/C.07-45 Magnesionigerite-2N1S (Mg,Zn,Fe,Al)4(Sn,Fe)2Al10O22(OH)2 P 3m 3 2/m

IV/C.07-45* Magnesionigerite-6N6S (Mg,Zn,Fe,Al)4(Sn,Fe)2Al10O22(OH)2 Unk Trig

IV/C.07-50 Ferronigerite-2N1S (Zn,Mg,Fe)(Sn,Zn)2(Al,Fe)12O22(OH)2 P 3m or P 3m1 3 2/m

IV/C.07-50* Ferronigerite-6N6S (Fe,Zn)4Sn2(Al,Fe)15O30(OH)2 R 3m 3 2/m

IV/C.07-60 Mengxianminite* (Ca,Na)3(Fe,Mn)2Mg2(Sn,Zn)5Al8O29 Unk Ortho

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 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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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: 7.11.8.2 Strunz No: IV/C.07-50*
Locality:

Notes: