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Alabandite

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Formula:
MnS
System:
Isometric
Colour:
Iron black, brown, ...
Hardness:
3½ - 4
Member of:
Name:
The name is derived from its supposed discovery locality at Alabanda, Aïdin, Turkey.

Classification of Alabandite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.CD.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
D : With Sn, Pb, Hg, etc.
2.8.1.4

2 : SULFIDES
8 : AmXp, with m:p = 1:1
3.8.12

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
8 : Sulphides etc. of Cr, Mo, W an Mn
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Type Occurrence of Alabandite

Year of Discovery:
1832

Occurrences of Alabandite

Geological Setting:
May occur in large quantities in epithermal polymetallic sulfide veins and especially in low-temperature manganese deposits. An uncommon constituent of a number of meteorites.

Physical Properties of Alabandite

Sub-Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Iron black, brown, greyish black, green; dull brown (tarnished)
Comment:
gray-white in polished section; deep green to brown and red in thin slivers.
Streak:
dark green, brown
Hardness (Mohs):
3½ - 4
Hardness (Vickers):
VHN100=164 - 176 kg/mm2
Tenacity:
Brittle
Cleavage:
Perfect
on {100}
Fracture:
Irregular/Uneven
Density:
3.95 - 4.04 g/cm3 (Measured)    4.053 g/cm3 (Calculated)

Crystallography of Alabandite

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fm3m
Space Group Setting:
Fm3m
Cell Parameters:
a = 5.2236Å
Unit Cell Volume:
V 142.53 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Crystals cubic or octahedral, to 1 cm. Commonly massive, granular.
Twinning:
Lamellar parallel to {111}
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.015 (14)
2.612 (100)
1.847 (50)
1.509 (20)
1.306 (8)
1.1682 (20)
1.0662 (16)
Comments:
Synthetic (ICDD 6-518).

Optical Data of Alabandite

Type:
Isotropic
RI values:
n = 2.70
Max Birefringence:
δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:
Very High
Type:
Isotropic
Reflectivity:
400nmR=26.1%
420nmR=25.9%
440nmR=25.5%
460nmR=24.8%
480nmR=24.2%
500nmR=23.7%
520nmR=23.2%
540nmR=22.9%
560nmR=22.7%
580nmR=22.5%
600nmR=22.3%
620nmR=22.1%
640nmR=22.0%
660nmR=21.9%
680nmR=21.8%
700nmR=21.8%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 26.1%.
Colour in reflected light:
Gray-white

Chemical Properties of Alabandite

Formula:
MnS
Essential elements:
All elements listed in formula:
Common Impurities:
Fe,Mg,Co

Relationship of Alabandite to other Species

Member of:
Other Members of Group:
AltaitePbTe
ClausthalitePbSe
GalenaPbS
Niningerite(Mg,Fe2+,Mn2+)S
Oldhamite(Ca,Mg)S
2.CD.05Herzenbergite(Sn,Pb)SnS2
2.CD.05Teallite(Pb,Sn)SnS2
2.CD.10AltaitePbTe
2.CD.10ClausthalitePbSe
2.CD.10GalenaPbS
2.CD.10Niningerite(Mg,Fe2+,Mn2+)S
2.CD.10Oldhamite(Ca,Mg)S
2.CD.10Keilite(Fe2+,Mg)S
2.CD.15aCinnabarHgS
2.CD.15bHypercinnabarHgS
3.8.1BrezinaiteCr3S4
3.8.2CaswellsilveriteNaCrS2
3.8.3KalininiteZnCr2S4
3.8.4DaubréeliteFe2+Cr23+S4
3.8.5Heideite(Fe,Cr)1.15(Ti,Fe)2S4
3.8.6MolybdeniteMoS2
3.8.7 Molybdenite-3RMoS2
3.8.8JordisiteMoS2
3.8.9DrysdalliteMo(Se,S)2
3.8.10TungsteniteWS2
3.8.13HaueriteMnS2
3.8.14Manganoshadlunite(Mn,Pb,Cd)(Cu,Fe)8S8

Other Names for Alabandite

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Alabandite

Reference List:
Klaproth, M.H. (1802): Chemische Untersuchung des Siebenbürgischen Schwarzerzes, Beiträge zur chemischen Kenntniss der Mineralkörper, Dritter Band, Rottmann Berlin, 35-43

Hewett, D.F. & O.N. Rove (1930), Occurrence and relations of alabandite, Economic Geology: 25: 36-56.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 207-208.

Abbolito E. (1960) Proprietà ottiche a luce riflessa dell'hauerite e dell'alabandite. Periodico di Mineralogia – Roma pp. 1-8.

American Mineralogist (1971): 56: 1269.

Törnroos, R. (1982): Properties of alabandite; alabandite from Finland. Neues Jahrb. Mineral., Abh., 144, 107–123.

Internet Links for Alabandite

Specimens:
The following Alabandite specimens are currently listed for sale on minfind.com.

Localities for Alabandite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Mineral and/or Locality  
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