Alabandite Mineral Data

Alabandite Mineral Data +

General Alabandite Information

Chemical Formula:

MnS

Composition:

Molecular Weight = 87.00 gm

Manganese 63.14 % Mn

Sulfur 36.86 % S

______

100.00 %

Empirical Formula:

Mn²⁺S

Environment:

Epithermal sulfide vein deposits.

IMA Status:

Valid Species (Pre-IMA) 1842

Locality:

Turkey, Aydin, Alabanda Link to MinDat.org Location Data.

Name Origin:

Named after its locality Alabanda, Turkey.

Synonym:

ICSD 41331

Manganblende

PDF 6-518

Alabandite Image

Images:

Alabandite

Comments: Dark gray stalactitic alabandite.
Location: Broken Hill Proprietary Mine, Broken Hill, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Alabandite Daubreelite

Comments: Daubreelite (D), bright metallic white, with alabandite (A) (dull yellow) as inclusions in a polished section of an achondrite meteorite.
Location: Norton County, Kansas. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alabandite Crystallography

Cell Dimensions:

a = 5.214, Z = 4; V = 141.75 Den(Calc)= 4.08

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): 2.612(1), 1.847(0.5), 1.509(0.2),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

McCammon C A , Physics and Chemistry of Minerals , 17 (1991) p.636-641, Static compression of alpha-MnS at 298 K to 21 GPa, Sample: P = O GPa

View Additional jPOWD Structure files for Alabandite
[1] [10] [11] [12] [13] [14] [15] [16] [2] [3] [4] [5] [6] [7] [8] [9]

Physical Properties of Alabandite

Cleavage:

[100] Perfect, [010] Perfect, [001] Perfect

Color:

Black, Lead gray, Brownish gray.

Density:

3.95 - 4.04, Average = 3.99

Diaphaniety:

Opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Disseminated - Occurs in small, distinct particles dispersed in matrix.

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Hardness:

3.5-4 - Copper Penny-Fluorite

Luminescence:

None.

Luster:

Sub Metallic

Magnetism:

Nonmagnetic

Streak:

dark green

Optical Properties of Alabandite

Optical Data:

Isotropic, n=2.7.

RL Color:

Gray white.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Alabandite in Air**
λ	R	∑ R(λ)
400 nm	30.90
420 nm	28.80
440 nm	26.70
460 nm	25.40
480 nm	24.50
500 nm	23.80
520 nm	23.20
540 nm	22.80
560 nm	22.40
580 nm	22.00
600 nm	21.80
620 nm	21.60
640 nm	21.50
660 nm	21.30
680 nm	21.20
700 nm	21.10

**Calculated Relative Intensity Colors of Alabandite in Air**
Relative Intensity	0%	40%	80%	100%	120%	160%	200%	240%	280%	320%	360%	390%
R

Calculated Properties of Alabandite

Electron Density:

r_electron=3.85 gm/cc
note: r_Alabandite=4.08 gm/cc.

Fermion Index

Fermion Index = 0.00276
Boson Index = 0.99724

Photoelectric:

PE_Alabandite= 18.54 barns/electron
U=PE_Alabandite x r_electron= 71.30 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Alabandite is Not Radioactive

Alabandite Classification

Dana Class:

2.8.1.4 (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.15-30 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 Alabandite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

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Alabandite

MnS
Dana No: 2.8.1.4 Strunz No: II/C.15-30
Locality:

Notes: