Niningerite Mineral Data

Niningerite Mineral Data +

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General Niningerite Information

Chemical Formula:

(Mg,Fe++,Mn)S

Composition:

Molecular Weight = 68.90 gm

Magnesium 21.17 % Mg

Manganese 7.97 % Mn

Iron 24.32 % Fe

Sulfur 46.54 % S

______

100.00 %

Empirical Formula:

Mg_0.6Fe²⁺_0.3Mn²⁺_0.1S

Environment:

In less extensively metamorphosed enstatite chondrite meteorites intergrown with kamacite and troilite.

IMA Status:

Approved IMA 1967

Locality:

In the Abee, Saint-Suveur, Adhi-Kot, Indarch, St. Marks, Qingzhen, and Kota-Kota enstatite chondrite meteorites. Link to MinDat.org Location Data.

Name Origin:

Named for Harvey Harlow Nininger (1887-1986), of Sedona Arizona, USA for his contributions to meteorite studies.

Synonym:

ICSD 30241

PDF 35-730

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Niningerite Crystallography

Cell Dimensions:

a = 5.17, Z = 4; V = 138.19 Den(Calc)= 3.31

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.601(1), 1.8388(0.6), 1.501(0.16),

Crystal Structure:

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Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, rocksalt structure

Physical Properties of Niningerite

Color:

Gray.

Diaphaniety:

Opaque

Habit:

Inclusions - Generally found as inclusions in other minerals.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Metallic

Optical Properties of Niningerite

RL Color:

Gray.

Calculated Properties of Niningerite

Electron Density:

r_electron=3.22 gm/cc
note: r_Niningerite=3.31 gm/cc.

Fermion Index

Fermion Index = 0.02981
Boson Index = 0.97019

Photoelectric:

PE_Niningerite= 12.23 barns/electron
U=PE_Niningerite x r_electron= 39.37 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Niningerite is Not Radioactive

Niningerite Classification

Dana Class:

2.8.1.6 (2)Sulfides - Including Selenides and Tellurides

(2.8)where Am Bn Xp, with (m+n):p=1:1

(2.8.1)Galena Group (Isometric: Fm3m)

2.8.1.1 Galena PbS F m3m 4/m 3 2/m

2.8.1.2 Clausthalite PbSe F m3m 4/m 3 2/m

2.8.1.3 Altaite PbTe F m3m 4/m 3 2/m

2.8.1.4 Alabandite MnS F m3m 4/m 3 2/m

2.8.1.5 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m

2.8.1.6 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m

2.8.1.7 Borovskite Pd3SbTe4 F m3m 4/m 3 2/m

2.8.1.8 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m

2.8.1.9 Keilite! (Fe,Mg)S F m3m 4/m 3 2/m

Strunz Class:

II/C.15-10 II - Sulfides and sulphosalts

II/C - Sulfides with metal: sulfur, selenium and tellurium = 1:1

II/C.15 - Galenite group

II/C.15-05 Keilite! (Fe,Mg)S F m3m 4/m 3 2/m

II/C.15-10 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m

II/C.15-20 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m

II/C.15-30 Alabandite MnS F m3m 4/m 3 2/m

II/C.15-40 Galena PbS F m3m 4/m 3 2/m

II/C.15-50 Clausthalite PbSe F m3m 4/m 3 2/m

II/C.15-60 Altaite PbTe F m3m 4/m 3 2/m

II/C.15-70 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m

Other Niningerite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Niningerite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Niningerite

(Mg,Fe++,Mn)S
Dana No: 2.8.1.6 Strunz No: II/C.15-10
Locality:

Notes: