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Miessiite

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Formula:
Pd11Te2Se2
Colour:
black
Lustre:
Metallic
Hardness:
2 - 2½
Specific Gravity:
10.94 (Calculated)
Crystal System:
Isometric
Name:
The mineral is named after the locality, the Miessi river (in Saami language, Miessijohka where johka means river and Miessi means a reindeer calf).
This page provides mineralogical data about Miessiite.


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Classification of MiessiiteHide

Approved
Approval Year:
2006
2.AC.15a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
A : Alloys
C : Alloys of metalloids with PGE
2.16.2.2

2 : SULFIDES
16 : Miscellaneous

Physical Properties of MiessiiteHide

Metallic
Transparency:
Opaque
Colour:
black
Hardness:
2 - 2½ on Mohs scale
Hardness:
VHN100=362 kg/mm2 - Vickers
Tenacity:
Malleable
Density:
10.94 g/cm3 (Calculated)

Optical Data of MiessiiteHide

Type:
Isotropic
Colour in reflected light:
light grey color in air; pinkish grey color in oil

Chemical Properties of MiessiiteHide

Formula:
Pd11Te2Se2

Crystallography of MiessiiteHide

Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Space Group:
Fd3m
Setting:
Fd3m
Cell Parameters:
a = 12.448(2) Å
Unit Cell V:
1,928.85 ų (Calculated from Unit Cell)
Z:
8

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.543(20)
2.395(80)
2.197(100)
2.072(20)
1.875(25)
1.555(25)
1.305(25)
1.271(30)

Type Occurrence of MiessiiteHide

General Appearance of Type Material:
subidiomorphic cubic morphology
Place of Conservation of Type Material:
Finnish Museum of Natural History, Geological Museum, University of Helsinki, Helsinki, Finland, under collection sample number D3004.
Geological Setting of Type Material:
Gold and PGM placer of glaciofluvial river gravels, sands, terraces, poorly sorted sandy till and weathered bedrock
Associated Minerals at Type Locality:

Synonyms of MiessiiteHide

Relationship of Miessiite to other SpeciesHide

Other Members of this group:
IsomertieitePd11Sb2As2Iso. m3m (4/m 3 2/m) : Fd3m

Related Minerals - Nickel-Strunz GroupingHide

2.AC.05aAtheneitePd2As0.75Hg0.25Hex. 6 m2 : P62m
2.AC.05bVincentitePd3AsTet.
2.AC.10cArsenopalladinitePd8(As,Sb)3Tric. 1 : P1
2.AC.10bMertieite-IIPd8Sb2.5As0.5Trig. 3m (3 2/m) : R3c
2.AC.10aStillwateritePd8As3Trig.
2.AC.15aIsomertieitePd11Sb2As2Iso. m3m (4/m 3 2/m) : Fd3m
2.AC.15bMertieite-IPd11(Sb,As)4Hex.
2.AC.20bPalarstanidePd5(Sn,As)2Hex.
2.AC.20aStibiopalladinitePd5Sb2Hex.
2.AC.20cMenshikovitePd3Ni2As3Hex. 6/m : P63/m
2.AC.25eMajakitePdNiAsHex.
2.AC.25aPalladoarsenidePd2AsMon. 2/m : P2/m
2.AC.25fPalladobismutharsenidePd2(As,Bi)Orth.
2.AC.25cPalladodymite(Pd,Rh)2AsOrth.
2.AC.25bRhodarsenide(Rh,Pd)2AsOrth.
2.AC.25dNaldrettitePd2SbOrth. mm2 : Cmc21
2.AC.30UM1999-02-As:NiRh(Rh,Ni)7As4
2.AC.30PolkanoviteRh12As7Hex.
2.AC.35aGenkinite(Pt,Pd,Rh)4Sb3Tet. 4 2 2
2.AC.35bUngavaitePd4Sb3Tet. 4 2 2 : P41 21 2
2.AC.40PolaritePd(Bi,Pb)Orth. mm2 : Cmc21
2.AC.45cBorishanskiitePd1+x(As,Pb)2 , x = 0-0.2Orth. mm2
2.AC.45aFrooditeα-PdBi2Mon. 2/m : B2/m
2.AC.45bIridarsenite(Ir,Ru)As2Mon.

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

2.16.2.1IsomertieitePd11Sb2As2Iso. m3m (4/m 3 2/m) : Fd3m

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 MiessiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kojonen, K. K., Tarkian, M., Roberts, A. C., Törnroos, R., & Heidrich, S. (2007). Miessiite, Pd11Te2Se2, a new mineral species from Miessijoki, Finnish Lapland, Finland. The Canadian Mineralogist, 45(5), 1221-1227.

Internet Links for MiessiiteHide

Localities for MiessiiteHide

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.
Finland (TL)
 
  • Lapland Region
    • Inari
      • Lemmenjoki
Kojonen, K.K., Tarkian, M., Roberts, A.C., Törnroos, R., Heidrich, S. (2007): Miessiite, Pd11Te2Se2, a new mineral species from Miessijoki, Finnish Lapland, Finland. Canadian Mineralogist, 45, (in press); 33rd International Geological Congress (2008) session MPM-04 Platinum-group mineralogy: Pt-Pd selenides from river placers, northern Finland; Kojonen, K. K., Tarkian, M., Roberts, A. C., Törnroos, R., & Heidrich, S. (2007). Miessiite, Pd11Te2Se2, a new mineral species from Miessijoki, Finnish Lapland, Finland. The Canadian Mineralogist, 45(5), 1221-1227.; Kari Kojonen (2012) PGE ore potential in the southwestern granulite belt of Northern Finland. Geological Survey of Finland, Report of Investigation 207 pp 64-67
Mineral and/or Locality  
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