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Tischendorfite

A valid IMA mineral species
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05269620017271929628821.jpg
Tischendorfite, etc.

Eskaborn adit, Tilkerode Mining District, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
05269620017271929628821.jpg
Tischendorfite, etc.

Eskaborn adit, Tilkerode Mining District, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
05269620017271929628821.jpg
Tischendorfite, etc.

Eskaborn adit, Tilkerode Mining District, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
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About TischendorfiteHide

00941000017271929663558.jpg
Gerhard Tischendorf
Formula:
Pd8Hg3Se9
Colour:
Silver-grey
Lustre:
Metallic
Specific Gravity:
9.13 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Gerhard Tischendorf (25 December 1927, Treuen, Vogtland, German Empire - 10 December 2007, Zittau, Germany), geologist with the Central Geological Institute in Berlin and later the Central Institute for Physics of the Earth (ZIPE). He was a specialist in selenium deposits, who first described the mineral as an unknown species in 1958.
This page provides mineralogical data about Tischendorfite.


Unique IdentifiersHide

Mindat ID:
11112
Long-form identifier:
mindat:1:1:11112:6

IMA Classification of TischendorfiteHide

Classification of TischendorfiteHide

Strunz-mindat (2026):
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.

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
TdfIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of TischendorfiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Silver-grey
Streak:
Black
Hardness Data:
Could not be measured
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)
Comment:
Could not be measured

Optical Data of TischendorfiteHide

Anisotropism:
Weak, steel blue to greenish brown
Bireflectance:
Weakly bireflectant
Reflectivity:
WavelengthR1 (%)R2 (%)imR1 (%)imR2 (%)
400nm38.2%43.3%27.85%33.2%
420nm42.3%47.6%30.5%35.6%
440nm44.6%49.6%32.35%37.3%
460nm46.2%50.85%33.6%38.1%
470nm46.8%51.3%33.9%38.3%
480nm47.3%51.7%34.45%38.7%
500nm48.2%52.4%34.95%39.0%
520nm48.75%52.75%35.35%39.3%
540nm49.3%53.1%35.75%39.5%
546nm49.4%53.1%35.9%39.5%
560nm49.7%53.1%36.2%39.6%
580nm49.95%53.2%36.4%39.7%
589nm49.9%53.25%36.5%39.9%
600nm49.9%53.4%36.45%40.0%
620nm49.8%53.3%36.2%39.8%
640nm49.3%52.9%35.8%39.7%
650nm48.95%52.55%35.7%39.6%
660nm48.4%52.45%35.3%39.5%
680nm47.0%50.7%34.2%38.5%
700nm43.5%47.0%32.3%37.0%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 53.4%.
R1 shown in black, R2 shown in red, imR1 shown in green, imR2 shown in blue
Colour in reflected light:
Cream or slightly beige
Internal Reflections:
None
Pleochroism:
Non-pleochroic

Chemistry of TischendorfiteHide

Mindat Formula:
Pd8Hg3Se9
Element Weights:
Element% weight
Pd39.346 %
Se32.843 %
Hg27.811 %

Calculated from ideal end-member formula.
Pd
Se
Hg
Elements listed:
Hg, Pd, Se - search for minerals with similar chemistry

Crystallography of TischendorfiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 7.219(3) Å, b = 16.782(7) Å, c = 6.467(5) Å
Ratio:
a:b:c = 0.43 : 1 : 0.385
Unit Cell V:
783.6 ų
Z:
2
Twinning:
No twinning observed
Comment:
Space group Pmmn (59), P21mn (31) or Pm21n (31). Cell parameters from Stanley et al. (2002).

X-Ray Powder DiffractionHide

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

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of TischendorfiteHide

Type Locality:
ⓘ Eskaborn adit, Tilkerode Mining District, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
General Appearance of Type Material:
Anhedral to subhedral grains, up to 100 μm in maximum dimension .
Place of Conservation of Type Material:
- Natural History Museum, London, U.K., num. BM 2001,8.
- GeoForschungsZentrum, Potsdam, Germany.
- Mineralogical Institute of the Technische Universität Bergakademie, Freiberg, Germany, num. 80160.

A single-crystal mount and two powder mounts are housed within the Systematic Reference Series of the National Mineral Collection of Canada, Geological Survey of Canada, Ottawa.
Geological Setting of Type Material:
Selenide vein deposit of telethermal origin.
Associated Minerals at Type Locality:
ChrisstanleyiteClausthaliteNative GoldStibiopalladiniteTiemannite
Reference:
Stanley, C. J., Criddle, A. J., Forster, H.-J., Roberts, A. C. (2002) Tischendorfite, Pd8Hg3Se9, a new mineral species from Tilkerode, Harz Mountains, Germany. The Canadian Mineralogist, 40 (2) 739-745 doi:10.2113/gscanmin.40.2.739

Synonyms of TischendorfiteHide

Other Language Names for TischendorfiteHide

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

Common AssociatesHide

Associations Based on Photo Data:
2 photos of Tischendorfite associated with ChrisstanleyiteAg2Pd3Se4
2 photos of Tischendorfite associated with ClausthalitePbSe
2 photos of Tischendorfite associated with TiemanniteHgSe
2 photos of Tischendorfite associated with StibiopalladinitePd5Sb2
1 photo of Tischendorfite associated with TilkerodeitePd2HgSe3
1 photo of Tischendorfite associated with HematiteFe2O3
1 photo of Tischendorfite associated with JacutingaitePt2HgSe3
1 photo of Tischendorfite associated with AnkeriteCa(Fe2+,Mg)(CO3)2

Related Minerals - Strunz-mindat GroupingHide

2.BC.PanskyitePd9Ag2Pb2S4Tet. 4/mmm(4/m2/m2/m) : I4/mmm
2.BC.FleetiteCu2RhIrSb2Iso. m3m(4/m32/m) : Fd3m
2.BC.ColdwellitePd3Ag2SIso. 432 : P4332
2.BC.'UM2004-45-Se:AgHgPd'(Ag,Cu)6Hg2Pd2Se3
2.BC.05'UM2000-47-S:CuFePdPt'PtPd(Fe,Cu)S
2.BC.05MiassiteRh17S15Iso. m3m(4/m32/m) : Pm3n
2.BC.05PalladseitePd17Se15Iso. m3m(4/m32/m)
2.BC.10Oosterboschite(Pd,Cu)7Se5Orth.
2.BC.15ChrisstanleyiteAg2Pd3Se4Mon. 2/m : P21/b
2.BC.15JagüéiteCu2Pd3Se4Mon. 2/m : P21/b
2.BC.20KeithconnitePd20Te7Trig. 3 : R3
2.BC.25Vasilite(Pd,Cu)16(S,Te)7Iso. 43m : I43m
2.BC.30TelluropalladinitePd9Te4Mon. 2/m : P21/b
2.BC.35KojonenitePd7-xSnTe2 (0.3 ≤ x ≤ 0.8)Tet. 4/mmm(4/m2/m2/m) : I4/mmm
2.BC.35LuberoitePt5Se4Mon. 2/m : P21/b
2.BC.37KravtsovitePdAg2SOrth. mmm(2/m2/m2/m) : Cmcm
2.BC.40Oulankaite(Pd,Pt)5(Cu,Fe)4SnTe2S2Tet.
2.BC.40LukkulaisvaaraitePd14Ag2Te9Tet. 4/m : I4/m
2.BC.42MonchetundraitePd2NiTe2Orth. mmm(2/m2/m2/m) : Ibam
2.BC.45Telargpalite(Pd,Ag)3(Te,Bi)Iso.
2.BC.45ThalhammeritePd9Ag2Bi2S4Tet. 4/mmm(4/m2/m2/m) : I4/mmm
2.BC.47VymazalováitePd3Bi2S2Iso. 23 : I213
2.BC.50TemagamitePd3HgTe3Trig. 3m : P3m1
2.BC.55BowlesitePtSnSOrth. mm2 : Pca21
2.BC.55SopcheiteAg4Pd3Te4Orth.
2.BC.60LaflammeitePd3Pb2S2Mon. 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.

Internet Links for TischendorfiteHide

References for TischendorfiteHide

Localities for TischendorfiteHide

Showing 2 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Germany (TL)
 
  • Saxony-Anhalt
    • Mansfeld-Südharz
      • Mansfeld
        • Tilkerode Mining District
Stanley et al. (2002) +1 other reference
Turkey
 
  • Hatay Province
    • Arsuz
Kozlu et al. (2010)
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