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Skippenite

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Formula:
Bi2TeSe2
Colour:
Steel-gray
Lustre:
Metallic
Hardness:
Crystal System:
Trigonal
Name:
Named in honor of George Skippen (b. 1936), metamorphic petrologist, Professor of Geology, Carleton University, Ottawa, Ontario.
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Classification of SkippeniteHide

Approved
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
2.11.7.6

2 : SULFIDES
11 : AmBnXp, with (m+n):p = 2:3
3.7.36

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
7 : Sulphides etc. of V, As, Sb and Bi

Physical Properties of SkippeniteHide

Metallic
Transparency:
Opaque
Colour:
Steel-gray
Streak:
Black
Hardness:
2½ on Mohs scale

Chemical Properties of SkippeniteHide

Formula:
Bi2TeSe2
IMA Formula:
Bi2Se2Te
Common Impurities:
Cu,Pb,S

Crystallography of SkippeniteHide

Crystal System:
Trigonal
Cell Parameters:
a = 4.18 Å, c = 29.12 Å
Ratio:
a:c = 1 : 6.967
Unit Cell V:
440.63 ų (Calculated from Unit Cell)

Type Occurrence of SkippeniteHide

Synonyms of SkippeniteHide

Other Language Names for SkippeniteHide

Relationship of Skippenite to other SpeciesHide

Other Members of this group:
IngoditeBi2TeSTrig.
KawazuliteBi2Te2SeTrig.
SulphotsumoiteBi3Te2STrig.
TelluronevskiteBi3TeSe2Trig.
TetradymiteBi2Te2STrig. 3m (3 2/m) : R3m
TsumoiteBiTeTrig. 3m (3 2/m) : P3 1m
VihorlatiteBi24Se17Te4Trig.

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.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.05BaksaniteBi6Te2S3Trig. 3m (3 2/m) : P3m1
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

Related Minerals - Dana Grouping (8th Ed.)Hide

2.11.7.1TetradymiteBi2Te2STrig. 3m (3 2/m) : R3m
2.11.7.2TellurobismuthiteBi2Te3Trig.
2.11.7.3TellurantimonySb2Te3Trig.
2.11.7.4ParaguanajuatiteBi2Se3Trig.
2.11.7.5KawazuliteBi2Te2SeTrig.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.7.1PatróniteVS4Mon.
3.7.2DuranusiteAs4SOrth. mmm (2/m 2/m 2/m) : Pmna
3.7.3DimorphiteAs4S3Orth. mmm (2/m 2/m 2/m) : Pnma
3.7.4RealgarAs4S4Mon. 2/m
3.7.5PararealgarAs4S4Mon. 2/m : P21/b
3.7.6AlacrániteAs8S9Mon. 2/m : P2/b
3.7.7UzoniteAs4S5Mon.
3.7.8OrpimentAs2S3Mon. 2/m
3.7.9JeromiteAmor.
3.7.10LaphamiteAs2(Se,S)3Mon. 2/m
3.7.11GetchelliteAsSbS3Mon. 2/m : P21/b
3.7.12Wakabayashilite[(As,Sb)6S9][As4S5]Orth. mm2 : Pna21
3.7.13PääkköneniteSb2AsS2Mon. 2/m : B2/m
3.7.14StibniteSb2S3Orth. mmm (2/m 2/m 2/m)
3.7.15MetastibniteSb2S3Amor.
3.7.16TellurantimonySb2Te3Trig.
3.7.17BismuthiniteBi2S3Orth. mmm (2/m 2/m 2/m)
3.7.18NevskiteBi(Se,S)Trig.
3.7.19GuanajuatiteBi2Se3Orth. mmm (2/m 2/m 2/m) : Pnma
3.7.21IkunoliteBi4(S,Se)3Trig.
3.7.22LaitakariteBi4Se2STrig. 3m : R3m
3.7.23PoubaitePbBi2(Se,Te,S)4Trig.
3.7.24TellurobismuthiteBi2Te3Trig.
3.7.25SoučekitePbCuBi(S,Se)3Orth.
3.7.26TsumoiteBiTeTrig. 3m (3 2/m) : P3 1m
3.7.27PilseniteBi4Te3Trig. 3m (3 2/m) : R3m
3.7.28HedleyiteBi7Te3Trig. 3m (3 2/m) : R3m
3.7.29TetradymiteBi2Te2STrig. 3m (3 2/m) : R3m
3.7.30JoséiteBi4TeS2Trig. 3m (3 2/m) : R3m
3.7.31Joséite-BBi4Te2STrig.
3.7.32IngoditeBi2TeSTrig.
3.7.33SulphotsumoiteBi3Te2STrig.
3.7.34KawazuliteBi2Te2SeTrig.
3.7.37KochkaritePbBi4Te7Trig.
3.7.38RucklidgeitePbBi2Te4Trig.
3.7.39AleksitePbBi2Te2S2Trig.
3.7.40JunoiteCu2Pb3Bi8(S,Se)16Mon. 2/m : B2/m

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 SkippeniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
JOHAN, Z., PICOT, P. & RUHLMANN, F. (1987): The ore mineralogy of the Otish Mountains uranium deposit, Quebec: skippenite, Bi2Se2Te, and watkinsonite, Cu2PbBi4(Se,S)8, two new mineral species. Quebec. Canadian Mineralogist 25, 625-638. [Abstracted in: American Mineralogist (1989) 74, 947]
Cook, N. J., Ciobanu, C. L., Wagner, T., Stanley, C. J. (2007): Minerals of the system Bi-Te-Se-S related to the tetradymite archetype: review of classification and compositional variation. Canadian Mineralogist 45, 665-708.

Internet Links for SkippeniteHide

Localities for SkippeniteHide

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.
Canada
 
  • Northwest Territories
    • Mazenod Lake District
Miller, R. (1981) Kawazulite Bi2Te2Se, related bismuth minerals and selenian covellite from the Northwest Territories. Can. Mineral.: 19: 341-348; in: Hawthorne, F.C., Dunn, P.J., Grice, J.D., Puziewicz, J., Shigley, J.E. (1986): New mineral names. American Mineralogist: 71: 847
  • Québec
    • Nord-du-Québec
      • Baie-James
        • Otish Mts
JOHAN, Z., PICOT, P. & RUHLMANN, F. (1987): The ore mineralogy of the Otish Mountains uranium deposit, Quebec: skippenite, Bi2Se2Te, and watkinsonite, Cu2PbBi4(Se,S)8, two new mineral species. Canadian Mineralogist 25, 625-638.
Mexico
 
  • Sonora
    • Mun. de Moctezuma
Lapis 2001(1), 11-40
Bindi L, Cipriani C (2004) The crystal structure of skippenite, Bi2Se2Te, from the Kochkar deposit, southern Urals, Russian Federation, The Canadian Mineralogist 42, 835-840
Bindi L, Cipriani C (2004) The crystal structure of skippenite, Bi2Se2Te, from the Kochkar deposit, southern Urals, Russian Federation, The Canadian Mineralogist 42, 835-840
Bindi L, Cipriani C (2004) The crystal structure of skippenite, Bi2Se2Te, from the Kochkar deposit, southern Urals, Russian Federation, The Canadian Mineralogist 42, 835-840
Russia
 
  • Far-Eastern Region
    • Kamchatka Oblast'
V.A. Kovalenker, O.Yu. Plotinskaya (2005): Te and Se mineralogy of Ozernovskoe and Prasolovskoe epithermal gold deposits, Kuril – Kamchatka volcanic belt. Geochemistry, Mineralogy and Petrology 43, 118-123. [http://www.geology.bas.bg/mineralogy/gmp_files/gmp43/Kovalenker.pdf]
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
        • Plast
          • Kochkar' District
Bindi L, Cipriani C (2004) The crystal structure of skippenite, Bi2Se2Te, from the Kochkar deposit, southern Urals, Russian Federation, The Canadian Mineralogist 42, 835-840
Mineral and/or Locality  
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