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Tischendorfite

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Formula:
Pd8Hg3Se9
System:
Orthorhombic
Colour:
Silver-grey
Lustre:
Metallic
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.

Classification of Tischendorfite

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.
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Type Occurrence of Tischendorfite

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

Physical Properties of Tischendorfite

Metallic
Diaphaneity (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)

Crystallography of Tischendorfite

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

Chemical Properties of Tischendorfite

Formula:
Pd8Hg3Se9
All elements listed in formula:

Relationship of Tischendorfite to other Species

2.BC.UM2004-45-Se:AgHgPd(Ag,Cu)6Hg2Pd2Se3
2.BC.05PalladseitePd17Se15
2.BC.05MiassiteRh17S15
2.BC.05UM2000-47-S:CuFePdPt(Cu,Fe,Pd,Pt,Rh)9S8
2.BC.10Oosterboschite(Pd,Cu)7Se5
2.BC.15ChrisstanleyiteAg2Pd3Se4
2.BC.15JagüéiteCu2Pd3Se4
2.BC.20KeithconnitePd20Te7
2.BC.25Vasilite(Pd,Cu)16(S,Te)7
2.BC.30TelluropalladinitePd9Te4
2.BC.35LuberoitePt5Se4
2.BC.40Oulankaite(Pd,Pt)5(Cu,Fe)4SnTe2S2
2.BC.45Telargpalite(Pd,Ag)3(Te,Bi)
2.BC.50TemagamitePd3HgTe3
2.BC.55SopcheiteAg4Pd3Te4
2.BC.60LaflammeitePd3Pb2S2

Other Names for Tischendorfite

Name in Other Languages:
Simplified Chinese:泰硒汞钯矿
Traditional Chinese:泰硒汞鈀礦

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 Tischendorfite

Reference List:
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.

Internet Links for Tischendorfite

Localities for Tischendorfite

(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
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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