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Tischendorfite

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Formula:
Pd8Hg3Se9
Colour:
Silver-grey
Lustre:
Metallic
Specific Gravity:
9.13 (Calculated)
Crystal System:
Orthorhombic
Name:
After G. Tischendorf (1927-2007), specialist for selenium deposits, who first described the mineral as an unknown species in 1958.
This page provides mineralogical data about Tischendorfite.


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Classification of TischendorfiteHide

Approved
Approval Year:
2001
2.BC.65

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
C : With Rh, Pd, Pt, etc.

Physical Properties of TischendorfiteHide

Metallic
Transparency:
Opaque
Colour:
Silver-grey
Streak:
Black
Comment:
polishing hardness near chrisstanleyite, greater than that of tiemannite and clausthalite, but lower than that of stibiopalladinite.
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
9.13 g/cm3 (Calculated)

Chemical Properties of TischendorfiteHide

Formula:
Pd8Hg3Se9

Crystallography of TischendorfiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 7.25 Å, b = 16.85 Å, c = 6.50 Å
Ratio:
a:b:c = 0.43 : 1 : 0.386
Unit Cell V:
794.06 ų (Calculated from Unit Cell)
Z:
2
Comment:
Pmmn (59), P21mn (31) or Pm21n (31)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.819(40)
4.373(40)
2.797(60)
2.743(100)
2.325(40)
2.116(40)
2.091(100)

Type Occurrence of TischendorfiteHide

General Appearance of Type Material:
anhedral to subhedral grains, up to 100μ in maximum dimension

Synonyms of TischendorfiteHide

Other Language Names for TischendorfiteHide

Simplified Chinese:泰硒汞钯矿
Traditional Chinese:泰硒汞鈀礦

Common AssociatesHide

Associated Minerals Based on Photo Data:
Chrisstanleyite1 photo of Tischendorfite associated with Chrisstanleyite on mindat.org.
Clausthalite1 photo of Tischendorfite associated with Clausthalite on mindat.org.
Tiemannite1 photo of Tischendorfite associated with Tiemannite on mindat.org.
Stibiopalladinite1 photo of Tischendorfite associated with Stibiopalladinite on mindat.org.
Ankerite1 photo of Tischendorfite associated with Ankerite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.BC.UM2004-45-Se:AgHgPd(Ag,Cu)6Hg2Pd2Se3
2.BC.ColdwellitePd3Ag2SIso. 4 3 2 : P43 3 2
2.BC.05PalladseitePd17Se15
2.BC.05MiassiteRh17S15Iso.
2.BC.05UM2000-47-S:CuFePdPt(Cu,Fe,Pd,Pt,Rh)9S8
2.BC.10Oosterboschite(Pd,Cu)7Se5Orth.
2.BC.15ChrisstanleyiteAg2Pd3Se4Mon.
2.BC.15JagüéiteCu2Pd3Se4Mon. 2/m : P21/b
2.BC.20KeithconnitePd20Te7Trig.
2.BC.25Vasilite(Pd,Cu)16(S,Te)7
2.BC.30TelluropalladinitePd9Te4Mon.
2.BC.35LuberoitePt5Se4Mon. 2/m : P21/b
2.BC.40Oulankaite(Pd,Pt)5(Cu,Fe)4SnTe2S2Tet.
2.BC.45Telargpalite(Pd,Ag)3(Te,Bi)Iso.
2.BC.50TemagamitePd3HgTe3Trig. 3m : P3m1
2.BC.55SopcheiteAg4Pd3Te4Orth.
2.BC.60LaflammeitePd3Pb2S2Mon.

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 TischendorfiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Stanley, C.J., Criddle, A.J., Förster, H.-J., and Roberts, A.C. (2002): Tischendorfite, Pd8Hg3Se9, a new mineral from Tilkerode, Harz Mountains, Germany. Canadian Mineralogist: 40: 739-745.
Drábek, M., Vymazalová, A., Laufek, F. (2014): The system Hg-Pd-Se at 400 °C: phase relations involving tischendorfite and other ternary phases. Canadian Mineralogist, 52, 763-768.

Internet Links for TischendorfiteHide

Localities for TischendorfiteHide

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.
Germany (TL)
 
  • Saxony-Anhalt
    • Harz
      • Tilkerode (Abberode)
Canadian Mineralogist: 40: 739-745; Lapis 2002(11), 42-43.; Stanley, C. J., Criddle, A. J., Förster, H. J., & Roberts, A. C. (2002). Tischendorfite, Pd8Hg3Se9, a new mineral species from Tilkerode, Harz Mountains, Germany. The Canadian Mineralogist, 40(2), 739-745.
Mineral and/or Locality  
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