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Baksanite

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About BaksaniteHide

Formula:
Bi6Te2S3
Colour:
Bright steel-grey
Lustre:
Metallic
Hardness:
1½ - 2
Specific Gravity:
8
Crystal System:
Trigonal
Name:
Named after the discovery locality.

Classification of BaksaniteHide

Approved
Approval Year:
1992
2.DC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
D : Metal Sulfides, M: S = 3 :4 and 2:3
C : Variable M:S

Physical Properties of BaksaniteHide

Metallic
Transparency:
Opaque
Colour:
Bright steel-grey
Streak:
Black
Hardness:
1½ - 2 on Mohs scale
Hardness:
VHN5=62 kg/mm2 - Vickers
Cleavage:
Perfect
{001}
Density:
8 g/cm3 (Measured)    7.98 g/cm3 (Calculated)

Optical Data of BaksaniteHide

Type:
Anisotropic
Anisotropism:
Distinct anisotropism from pale yellow to grey
Bireflectance:
Veryt faint
Reflectivity:
470nmR1=48.2%R2= 52.1%
546nmR1=48.4%R2= 52.5%
589nmR1=48.8%R2= 51.9%
650nmR1=49.2%R2= 51.0%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 52.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Bright white
Pleochroism:
Weak
Comments:
White to pale grey

Chemical Properties of BaksaniteHide

Formula:
Bi6Te2S3
Common Impurities:
Sb,S,Pb

Crystallography of BaksaniteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Cell Parameters:
a = 4.249 Å, c = 62.82 Å
Ratio:
a:c = 1 : 14.785
Unit Cell V:
982 ų
Z:
3
Morphology:
Only {001} observed.
Twinning:
None observed.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.65 (14)
4.50 (46)
3.58 (22)
3.53 (15)
3.30 (20)
3.09 (100)
2.255 (38)
2.126 (25)

Type Occurrence of BaksaniteHide

Geological Setting of Type Material:
In small chlorite-calcite nests and veins in garnet-magnetite skarn.
Associated Minerals at Type Locality:

Synonyms of BaksaniteHide

Other Language Names for BaksaniteHide

German:Baksanit
Spanish:Baksanita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Andradite4 photos of Baksanite associated with Andradite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.DC.05HedleyiteBi7Te3Trig. 3m (3 2/m) : R3m
2.DC.05IkunoliteBi4(S,Se)3Trig.
2.DC.05IngoditeBi2TeSTrig.
2.DC.05Joséite-BBi4Te2STrig.
2.DC.05KawazuliteBi2Te2SeTrig.
2.DC.05LaitakariteBi4Se2STrig. 3m : R3m
2.DC.05NevskiteBi(Se,S)Trig.
2.DC.05ParaguanajuatiteBi2Se3Trig.
2.DC.05PilseniteBi4Te3Trig. 3m (3 2/m) : R3m
2.DC.05SkippeniteBi2TeSe2Trig.
2.DC.05SulphotsumoiteBi3Te2STrig.
2.DC.05TellurantimonySb2Te3Trig.
2.DC.05TellurobismuthiteBi2Te3Trig.
2.DC.05TetradymiteBi2Te2STrig. 3m (3 2/m) : R3m
2.DC.05TsumoiteBiTeTrig. 3m (3 2/m) : P3 1m
2.DC.05Joséite-CBi16Te3S9
2.DC.05ProtojoséiteBi3(Te,S)2Trig.
2.DC.05SztrókayiteBi3TeS2
2.DC.05VihorlatiteBi24Se17Te4Trig.
2.DC.05TelluronevskiteBi3TeSe2Trig.
2.DC.05UM1983-09-S:BiPbTePbBi3S2Te

Other InformationHide

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 BaksaniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Zav´yalov, E.N., Fedyushchenko, S.V., Shcherbachev, D.K., Borodayev, Y.S., Dorokhova, G.D. (1996) Baksanite, Bi6(Te2S3), a new mineral from Tyrny´auz (northern Caucasus). Doklady Akademii Nauk 347, 787-791
Mineralogical Record: 28: 483.
Bindi, L., Cipriani, C. (2003): Plumbian baksanite from the Tyrnyauz W–Mo deposit, Baksan River valley, northern Caucasus, Russian Federation. Canadian Mineralogist 41, 1475-1479.

Internet Links for BaksaniteHide

Localities for BaksaniteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
China
 
  • Hainan Province (Hainan Island)
    • Ledong Co.
Bin Shu, Ping'an Wang, Faxian Dong, and Zhongjian Li (2006): Geological Bulletin of China 25(6), 745-755
Iran
 
  • Lorestan Province
    • Ashour Abad
Nezafatis, N. (2006): Au-Sn-W-Cu Mineralization in the Astaneh-Sarband Area, West Central Iran. PhD thesis, University of Tübingen (Germany), 116 pp.
Russia (TL)
 
  • Northern Caucasus Region
    • Kabardino-Balkarian Republic
      • Baksan valley
        • Tyrnyauz Mo-W deposit
AM 48 (1963), 930; DAN 347/6 (1996), 787; AM 82 (1997), 1038; MR 28 (1997), 428; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Jambor J L, Pertsev N N, Roberts A C (1997) New mineral names, American Mineralogist 82, 1038-1041 ; Bindi L, Cipriani C (2003) Plumbian baksanite from the Tyrnyauz W–Mo deposit, Baksan River valley, northern Caucasus, Russian Federation, The Canadian Mineralogist 41, 1475-1479
Slovakia
 
  • Banská Bystrica Region
    • Revúca Co.
      • Chyžné
Bálintová T., Ozdín D.,2006:Sulphosalts from Chyžné-Herichová in the Western Carpathians (Slovakia). Acta Miner.-Petrograph.,Abstract Series 5, Szeged, p.8
Mineral and/or Locality  
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